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* SimpleYetAwesome: The Sun Avatar fires 3 streams of sun energy at the bloons. Not very flashy compared to the temples, but it excels at taking down bloon rushes and getting enough of them will crush even the strongest bloons like they're nothing, and it being a Tier 4 monkey with a (relatively) small footprint gives it the luxury of being spammed like no tomorrow if you have enough cash. A Sun Avatar with Knockback is arguably one of the best towers in 6, as its high pierce coupled with the Knockback and Ultravision upgrades allows it to single-handedly deal with nearly all bloon rushes that can be thrown at it.
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* SimpleYetAwesome: The Sun Avatar fires 3 streams of sun energy at the bloons. Not very flashy compared to the temples, but it excels at taking down bloon rushes and getting enough of them will crush even the strongest bloons like they're nothing, and it being a Tier 4 3 monkey with a (relatively) small footprint gives it the luxury of being spammed like no tomorrow if you have enough cash. A Sun Avatar with Knockback is arguably one of the best towers in 6, as its high pierce coupled with the Knockback and Ultravision upgrades allows it to single-handedly deal with nearly all bloon rushes that can be thrown at it.
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* AwesomeButImpractical: The Final Strike of the Nautic Siege Core boasts some of the highest damage of any non-instakill attack in the game while also doing massive lingering damage in a huge area, but it takes ''four minutes'' of real time to charge up and disables the Sub for a whole 15 seconds before the missile hits. Not only does this mean it can't be activated on demand half the time, actually using it means 15 seconds of the Sub not doing anything else, which can spell disaster if it was your main source of damage or you need to squeeze out every last bit of DPS for a Boss.
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* AwesomeButImpractical: The Final Strike of the Nautic Siege Core boasts some of the highest damage of any non-instakill attack in the game while also doing massive lingering damage in a huge area, but it takes ''four minutes'' of real time to charge up and disables the Sub for a whole 15 seconds before the missile hits. Not only does this mean it can't be activated on demand half the time, actually using it means 15 seconds of the Sub not doing anything else, which can spell disaster if it was your main source of damage or are in a situation that demands you need to squeeze out every last bit of DPS for a Boss.DPS.
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* InstantDeathRadius: The Energizer's radioactive aura completely obliterates any standard bloon, doing 3 damage every third of a second without any other upgrades. For reference, ceramics have 18 total layers. They don't survive longer than 2 seconds.
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* InstantDeathRadius: The Energizer's radioactive aura completely obliterates any standard bloon, doing 3 damage every third of a second without any other upgrades. For reference, ceramics have 18 total layers. They don't survive longer than 2 seconds. The Nautic Siege Core doubles down on this by increasing the damage per tick into the ''hundreds'', which instantly fries every standard bloon while obliterating most standard blimps as well.
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* AwesomeButImpractical: The Final Strike of the Nautic Siege Core boasts some of the highest damage of any non-instakill attack in the game while also doing massive lingering damage in a huge area, but it takes ''four minutes'' of real time to charge up and disables the Sub for a whole 15 seconds before the missile hits. Not only does this mean it can't be activated on demand half the time, actually using it means 15 seconds of the Sub not doing anything else, which can spell disaster if it was your main source of damage or you need to squeeze out every last bit of DPS for a Boss.
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* BoringButPractical: Not a very flashy attacker, but the Tack Shooter is very cheap and one of the most cost-effective ways to thin out bloon rushes: in theory, it can do 8 damage per shot without needing any upgrades, much more than any other similarly-priced base tower (though reaching this maximum is very situational and only possible in certain positions).
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* BoringButPractical: Not a very flashy attacker, but the Tack Shooter is very cheap and one of the most cost-effective ways to thin out bloon rushes: in theory, it can do 8 damage per shot without needing any upgrades, much more than any other similarly-priced base tower (though reaching this maximum is very situational and only possible in certain positions). Giving it a few upgrades can handle a lot of the earlygame, especially if placed at a bend.
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* BoringButPractical: The Bomb Tower has arguably the least impressive upgrade cosmetics of any tower, which is particularly notable in ''[=BTD6=]''. While the majority of the towers get some drastic makeovers with only a few upgrades, and are borderline unrecognizable once they get to tier 5, the Bomb Tower tends to look more or less exactly as it did at level 1, just bigger and with some color highlights. The only path that drastically changes its appearance is path 2 which instead turns it into a missile launcher, in which case it's basically just a black missile with a face painted on it.
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* AwesomeButImpractical: The Sun Temple in both games it appears in. It's without a doubt the strongest offensive tower in the game, and its sacrifices can make it even stronger and more versatile. However, in order to fund such a temple requires income that can easily win most standard game modes ten times over, and affording a temple is nigh-unfeasable in CHIMPS as you simply don't gain enough money over the course of the game for one. Temples truly shine in freeplay, where the ZergRush of high-tier blimps justifies the cost in investing in one.
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* AwesomeButImpractical: The Sun Temple in both games it appears in.in, and by extension the stronger True Sun God in ''6''. It's without a doubt the strongest offensive tower in the game, and its sacrifices can make it even stronger and more versatile. However, in order to fund such a temple requires income that can easily win most standard game modes ten times over, and affording a temple is nigh-unfeasable in CHIMPS as you simply don't gain enough money over the course of the game for one. Temples truly shine in freeplay, where the ZergRush of high-tier blimps justifies the cost in investing in one. The sixth game does add one more primary use case for a Temple or True Sun God - Boss Bloon Events, where it essentially functions as an extra (and potentially stronger) Paragon.
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* InfinityPlusOneSword: By far the most expensive tower to buy and even more expensive to upgrade, but boasts impossible firepower. Especially the Sun God upgrade path, as they are the most powerful and the most expensive upgrades to purchase in every game they've appeared in. They even have a sacrifice ability unique to them which increases their powers even more - the True Sun God upgrade costs more than certain Paragon upgrades and is just as powerful (if not more) than them, despite "only" being the final top path upgrade for the Super Monkey.
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* InfinityPlusOneSword: By far the most expensive tower to buy and even more expensive to upgrade, but boasts impossible firepower. Especially the Sun God upgrade path, as they are the most powerful and the most expensive upgrades to purchase in every game they've appeared in. They even have a sacrifice ability unique to them which increases their powers even more - the True Sun God upgrade costs more than certain Paragon upgrades and is just as powerful (if not more) than them, despite "only" being the final top path upgrade for the Super Monkey. The [[SuperpoweredEvilSide Vengeful True Sun God]] effectively fills the role of a Super Monkey Paragon (requiring all 3 Tier 5 Super Monkeys and a boatload of sacrifices to purchase), and is notably able to ''surpass'' Paragons in many situations, mostly because unlike them, it can freely recieve offensive buffs.
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** In [=BTD6=] the "Strike down the false" monkey knowledge allows Sun Avatars to pop purple bloons while Sun Temples and the True Sun God can do so by default. The Dark Champion and the Legend of the Night upgrades are also capable of popping all bloon types. The Middle Path Super Monkey is capable of bypassing its resistances as well with the Anti Bloon upgrade, while the Tech Terror can do so as well if it uses the annihilation ability.
* SimpleYetAwesome: The Sun Avatar fires 3 streams of sun energy at the bloons. Not very flashy compared to the temples, but it excels at taking down bloon rushes and getting enough of them will crush even the strongest bloons like they're nothing. A Sun Avatar with Knockback is arguably one of the best towers in 6, as its high pierce coupled with the Knockback and Ultravision upgrades allows it to single-handedly deal with nearly all bloon rushes that can be thrown at it.
* SimpleYetAwesome: The Sun Avatar fires 3 streams of sun energy at the bloons. Not very flashy compared to the temples, but it excels at taking down bloon rushes and getting enough of them will crush even the strongest bloons like they're nothing. A Sun Avatar with Knockback is arguably one of the best towers in 6, as its high pierce coupled with the Knockback and Ultravision upgrades allows it to single-handedly deal with nearly all bloon rushes that can be thrown at it.
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** In [=BTD6=] the "Strike down the false" Down The False" monkey knowledge allows Sun Avatars to pop purple bloons bloons, while Sun Temples and the True Sun God can do so by default. The Dark Champion and the Legend of the Night upgrades are also capable of popping all bloon types. The Middle Path Super Monkey is capable of bypassing its resistances as well with the Anti Bloon upgrade, while the Tech Terror can do so as well if it uses the annihilation ability.
* SimpleYetAwesome: The Sun Avatar fires 3 streams of sun energy at the bloons. Not very flashy compared to the temples, but it excels at taking down bloon rushes and getting enough of them will crush even the strongest bloons like they'renothing.nothing, and it being a Tier 4 monkey with a (relatively) small footprint gives it the luxury of being spammed like no tomorrow if you have enough cash. A Sun Avatar with Knockback is arguably one of the best towers in 6, as its high pierce coupled with the Knockback and Ultravision upgrades allows it to single-handedly deal with nearly all bloon rushes that can be thrown at it.
* SimpleYetAwesome: The Sun Avatar fires 3 streams of sun energy at the bloons. Not very flashy compared to the temples, but it excels at taking down bloon rushes and getting enough of them will crush even the strongest bloons like they're
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** In [=BTD6=], if you fulfill certain requirements when upgrading into a True Sun God[[note]]The Sun Temple must have 3 out of the 4 categories of primary, military, magic, and support maxed out of more than 50,000 dollars each, then before upgrading to the True Sun God, have all 4 categories maxed out with both the Anti-Bloon and the Legend of the Night outside of the Temple's range[[/note]], it will transform further into the Vengful True Sun God. It acts the same way as a normal True Sun God, except it's red and black and deals doubled damage with all attacks.
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** In [=BTD6=], if you fulfill certain requirements when upgrading into a True Sun God[[note]]The Sun Temple must have 3 out of the 4 categories of primary, military, magic, and support maxed out of more than 50,000 dollars each, then before upgrading to the True Sun God, have all 4 categories maxed out with both the Anti-Bloon and the Legend of the Night outside of the Temple's range[[/note]], it will transform further into the Vengful True Sun God. It acts the same way as a normal True Sun God, except it's red and black and deals doubled damage with all attacks.attacks, which is ''not'' a good thing for any unfortunate bloons given how much damage a normal one does already.
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** In [=BTD5=], for all of its immense power, the Super Monkey has ''no'' normal upgrades that help with Camo Detection. That means that without anything else to fire at, a Tier 3 Super Monkey Lair, or a Monkey Village nearby, a max-sacrifice Temple of the Monkey God will be unable to stop a single Camo Red Bloon passing by (Tech Terror can use Bloon Annihilation to fry it). However, [=BTD6=] adds the Ultravision upgrade which not only allows it to see but ''deal'' extra damage to camo.
** In [=BTD6=], Laser Vision, Plasma Vision, and the Sun Avatar cannot harm purple bloons without the appropriate Monkey Knowledge/external upgrades.
** In [=BTD6=], Laser Vision, Plasma Vision, and the Sun Avatar cannot harm purple bloons without the appropriate Monkey Knowledge/external upgrades.
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** In [=BTD5=], for all of its immense power, the Super Monkey has ''no'' normal upgrades that help with Camo Detection. That means that without anything else to fire at, a Tier 3 Super Monkey Lair, or a Monkey Village nearby, a max-sacrifice Temple of the Monkey God will be unable to stop a single Camo Red Bloon passing by (Tech Terror can use Bloon Annihilation to fry it). However, [=BTD6=] adds the Ultravision upgrade which not only allows it to see but ''deal'' extra damage to camo.
camo, although if you opted for the range crosspath instead, even a ''Vengeful True Sun God'' is out of luck.
** In [=BTD6=], Laser Vision, Plasma Vision, and the Sun Avatar cannot harm purple bloons without the appropriate Monkey Knowledge/external upgrades. The Sun Temple, despite also firing energy, can pop any bloon type.
** In [=BTD6=], Laser Vision, Plasma Vision, and the Sun Avatar cannot harm purple bloons without the appropriate Monkey Knowledge/external upgrades. The Sun Temple, despite also firing energy, can pop any bloon type.
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* HotSubOnSubAction: Averted; Monkey Subs cannot attack when submerged, instead only performing supportive abilities. They must be surfaced to fire darts or missiles.
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* MacrossMissileMassacre: Pre-Emptive Strike, the final upgrade on its second path, increases its base missile attack rate to once every half second, but where it really shines is when it launches a [=MOAB=] Assassin at EVERY blimp that dares enter the screen. By the time this upgrade becomes affordable and relevant, the game will be throwing [=MOAB=]-class bloons at you ''en masse'', resulting in this trope.
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* MacrossMissileMassacre: Pre-Emptive Strike, the final upgrade on its second path, increases its base missile attack rate to once every half second, but where it really shines is when it launches a [=MOAB=] Assassin at EVERY blimp that dares enter the screen. By the time this upgrade becomes affordable and relevant, the game will be throwing [=MOAB=]-class bloons at you ''en masse'', resulting in this trope. The Nautic Siege Core takes things up a notch by firing pre-emptive missiles at ''anything'' that enters the screen, even regular bloons.
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* OneHitKill: First Strike Capability launches a super-powerful missile at the strongest bloon on the map, dealing ''10,000'' damage on impact[[note]]The most damage done by a single attack in the game that isn't from a Paragon or true instakill[[/note]] as well as significant splash damage. At the time of its introduction, this could instantly and completely destroy any bloon, notably being the only thing that could definitively one-shot a Z.O.M.G.,[[note]]For reference, a Z.O.M.G. has 4,000 HP, and fortified Bloons didn't exist at the time, meaning it'd only become able to survive the missile in ''very'' late Freeplay rounds.[[/note]] and any surplus damage from destroying the initial target is shunted onto nearby bloons, allowing it to possibly eliminate groups of blimps at a time. Even when the B.A.D. was introduced, it still remained a useful tool for taking it down as it can take out ''half'' of a B.A.D's base HP in one shot,[[note]]Against the Round 100 B.A.D., it instead takes out slightly over a third due to health scaling increasing its HP to 28,000 instead of 20,000[[/note]] and will more often than not completely obliterate the thing if it deals the finishing blow, sparing you the trouble of dealing with its children if you've softened up the blimp beforehand. Its immense damage also makes it a valuable asset against early Boss Bloon tiers, especially for speedruns.
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* OneHitKill: First Strike Capability launches a super-powerful missile at the strongest bloon on the map, dealing ''10,000'' damage on impact[[note]]The most damage done by a single attack in the game that isn't from a Paragon or true instakill[[/note]] as well as significant splash damage. At the time of its introduction, this could instantly and completely destroy any bloon, notably being the only thing that could definitively one-shot a Z.O.M.G.,[[note]]For reference, a Z.O.M.G. has 4,000 HP, and fortified Bloons didn't exist at the time, meaning it'd only become able to survive the missile in ''very'' late Freeplay rounds.[[/note]] and any surplus damage from destroying the initial target is was shunted onto nearby bloons, allowing it to possibly eliminate groups of blimps at a time. Even when the B.A.D. was introduced, it still remained a useful tool for taking it down as it can take out ''half'' of a B.A.D's base HP in one shot,[[note]]Against the Round 100 B.A.D., it instead takes out slightly over a third due to health scaling increasing its HP to 28,000 instead of 20,000[[/note]] and will more often than not completely obliterate the thing if it deals the finishing blow, sparing you the trouble of dealing with its children if you've softened up the blimp beforehand. Its immense damage also makes it a valuable asset against early Boss Bloon tiers, especially for speedruns.
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Its Paragon upgrade is the Nautic Siege Core, which launches an unending barrage of airburst rockets at any target in range of itself or other towers while nuking anything that enters the screen with pre-emptive missiles. It can also submerge to generate an extremely powerful radiation aura that vaporizes most lesser threats, while retaining the Energizer's passive and granting offensive buffs to Subs and Heroes in its range. Either form also has access to the Final Strike ability, which completely obliterates and irradiates an area of its choosing.
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Its Paragon upgrade is the Nautic Siege Core, which launches an unending barrage of airburst rockets at any target in range of itself or other towers while nuking anything that enters the screen with pre-emptive missiles. It can also submerge to generate an extremely powerful radiation aura that vaporizes most lesser threats, while retaining the Energizer's passive and granting offensive buffs to Subs and Heroes in its range. Either form also has access to the Final Strike ability, which completely unleashes a delayed nuclear barrage that obliterates and irradiates an area of its choosing.
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* AllYourPowersCombined: The Monkey Sub Paragon, the Nautic Siege Core, has the psuedo-infinite range of Advanced Intel and fires an unending stream of sharply homing missiles, along with pre-emptive missile strikes on every bloon that enters the screen. In its submerge mode, it gains a much stronger radiation aura and retains Energizer's cooldown reduction passive (which can now also affect Paragons), in addition to granting hefty damage and pierce buffs to Subs and Heroes in the radius. Finally, it has the Final Strike ability which, after a 15 second delay, strikes targets with three nuclear missiles that do tremendous damage and leave behind lethal pools of radiation. This power set combines features from the Energizer, Pre-Emptive Strike, and Sub Commander.
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* AllYourPowersCombined: The Monkey Sub Paragon, the Nautic Siege Core, has the psuedo-infinite range of Advanced Intel and fires an unending stream of sharply homing airburst missiles, along with pre-emptive missile strikes on every bloon that enters the screen. In its submerge mode, it gains a much stronger radiation aura and retains Energizer's cooldown reduction passive (which can now also affect Paragons), Paragons in range), in addition to granting hefty damage and pierce buffs to Subs and Heroes in the radius. Finally, it has the Final Strike ability which, after a 15 second delay, strikes targets with three nuclear missiles that do tremendous damage and leave behind lethal pools of radiation. This power set combines features from the Energizer, Pre-Emptive Strike, and Sub Commander.
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** The Nautic Siege Core retains Energizer's functionality while providing massive offensive buffs to Heroes and Subs in its radius,[[note]]Heroes gain +400% damage, +200% pierce, +150% attack speed, and 5x XP gain; Subs gain +600% damage and +200% pierce.[[/note]] and can notably also grant a smaller 10% cooldown reduction to any Paragons in its radius.
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* OneHitKill: First Strike Capability launches a super-powerful missile at the strongest bloon on the map, dealing ''10,000'' damage on impact[[note]]The most damage done by a single attack in the game that isn't from a Paragon or true instakill[[/note]] as well as significant splash damage. At the time of its introduction, this could instantly and completely destroy any bloon, notably being the only thing that could definitively one-shot a Z.O.M.G.,[[note]]For reference, a Z.O.M.G. has 4,000 HP, and fortified Bloons didn't exist at the time, meaning it'd only become able to survive the missile in ''very'' late Freeplay rounds.[[/note]] and any surplus damage from destroying the initial target is shunted onto nearby bloons, allowing it to possibly eliminate groups of blimps at a time. Even when the B.A.D. was introduced, it still remained a useful tool for taking it down as it can take out ''half'' of a B.A.D's base HP in one shot,[[note]]Against the Round 100 B.A.D., it instead takes out slightly over a third due to health scaling increasing its HP to 28,000 instead of 20,000[[/note]] and will completely obliterate the thing if it deals the finishing blow, which usually just needs the blimp to be softened up a bit. Its immense damage also makes it a valuable asset against early Boss Bloon tiers, especially for speedruns.
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* OneHitKill: First Strike Capability launches a super-powerful missile at the strongest bloon on the map, dealing ''10,000'' damage on impact[[note]]The most damage done by a single attack in the game that isn't from a Paragon or true instakill[[/note]] as well as significant splash damage. At the time of its introduction, this could instantly and completely destroy any bloon, notably being the only thing that could definitively one-shot a Z.O.M.G.,[[note]]For reference, a Z.O.M.G. has 4,000 HP, and fortified Bloons didn't exist at the time, meaning it'd only become able to survive the missile in ''very'' late Freeplay rounds.[[/note]] and any surplus damage from destroying the initial target is shunted onto nearby bloons, allowing it to possibly eliminate groups of blimps at a time. Even when the B.A.D. was introduced, it still remained a useful tool for taking it down as it can take out ''half'' of a B.A.D's base HP in one shot,[[note]]Against the Round 100 B.A.D., it instead takes out slightly over a third due to health scaling increasing its HP to 28,000 instead of 20,000[[/note]] and will more often than not completely obliterate the thing if it deals the finishing blow, which usually just needs sparing you the blimp to be trouble of dealing with its children if you've softened up a bit.the blimp beforehand. Its immense damage also makes it a valuable asset against early Boss Bloon tiers, especially for speedruns.
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* NukeEm: The First Strike Capability's signature ability launches a powerful nuclear missile at the strongest bloon on screen. Few things can survive this. The Nautic SIege Core's [[MeaningfulName Final Strike]] launches three even stronger ones which not only do far more damage, but also leave behind damaging radiation.
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* NukeEm: The First Strike Capability's signature ability launches a powerful nuclear missile at the strongest bloon on screen. Few things can survive this. The Nautic SIege Siege Core's [[MeaningfulName Final Strike]] launches three even stronger ones which not only do far more damage, but also leave behind damaging radiation.
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* NukeEm: The First Strike Capability's signature ability launches a powerful nuclear missile at the strongest bloon on screen. Few things can survive this.
* OneHitKill: First Strike Capability launches a super-powerful missile at the strongest bloon on the map, dealing ''10,000'' damage on impact[[note]]The most damage done by a single attack in the game that isn't from a Paragon or true instakill[[/note]] as well as significant splash damage. At the time of its introduction, this could instantly and completely destroy any bloon, notably being the only thing that could definitively one-shot a Z.O.M.G.,[[note]]For reference, a Z.O.M.G. has 4,000 HP, and fortified Bloons didn't exist at the time, meaning it'd only become able to survive the missile in ''very'' late Freeplay rounds.[[/note]] and any surplus damage from destroying the initial target is shunted onto nearby bloons, allowing it to possibly eliminate groups of blimps at a time. Even when the B.A.D. was introduced, it still remained a useful tool for taking it down as it can take out ''half'' of a non-fortified B.A.D's base HP in one shot, and will completely obliterate the thing if it deals the finishing blow, which usually just needs the blimp to be softened up a bit. Its immense damage also makes it a valuable asset against early Boss Bloon tiers, especially for speedruns.
* OneHitKill: First Strike Capability launches a super-powerful missile at the strongest bloon on the map, dealing ''10,000'' damage on impact[[note]]The most damage done by a single attack in the game that isn't from a Paragon or true instakill[[/note]] as well as significant splash damage. At the time of its introduction, this could instantly and completely destroy any bloon, notably being the only thing that could definitively one-shot a Z.O.M.G.,[[note]]For reference, a Z.O.M.G. has 4,000 HP, and fortified Bloons didn't exist at the time, meaning it'd only become able to survive the missile in ''very'' late Freeplay rounds.[[/note]] and any surplus damage from destroying the initial target is shunted onto nearby bloons, allowing it to possibly eliminate groups of blimps at a time. Even when the B.A.D. was introduced, it still remained a useful tool for taking it down as it can take out ''half'' of a non-fortified B.A.D's base HP in one shot, and will completely obliterate the thing if it deals the finishing blow, which usually just needs the blimp to be softened up a bit. Its immense damage also makes it a valuable asset against early Boss Bloon tiers, especially for speedruns.
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* NukeEm: The First Strike Capability's signature ability launches a powerful nuclear missile at the strongest bloon on screen. Few things can survive this.
this. The Nautic SIege Core's [[MeaningfulName Final Strike]] launches three even stronger ones which not only do far more damage, but also leave behind damaging radiation.
* OneHitKill: First Strike Capability launches a super-powerful missile at the strongest bloon on the map, dealing ''10,000'' damage on impact[[note]]The most damage done by a single attack in the game that isn't from a Paragon or true instakill[[/note]] as well as significant splash damage. At the time of its introduction, this could instantly and completely destroy any bloon, notably being the only thing that could definitively one-shot a Z.O.M.G.,[[note]]For reference, a Z.O.M.G. has 4,000 HP, and fortified Bloons didn't exist at the time, meaning it'd only become able to survive the missile in ''very'' late Freeplay rounds.[[/note]] and any surplus damage from destroying the initial target is shunted onto nearby bloons, allowing it to possibly eliminate groups of blimps at a time. Even when the B.A.D. was introduced, it still remained a useful tool for taking it down as it can take out ''half'' of anon-fortified B.A.D's base HP in one shot, shot,[[note]]Against the Round 100 B.A.D., it instead takes out slightly over a third due to health scaling increasing its HP to 28,000 instead of 20,000[[/note]] and will completely obliterate the thing if it deals the finishing blow, which usually just needs the blimp to be softened up a bit. Its immense damage also makes it a valuable asset against early Boss Bloon tiers, especially for speedruns.
* OneHitKill: First Strike Capability launches a super-powerful missile at the strongest bloon on the map, dealing ''10,000'' damage on impact[[note]]The most damage done by a single attack in the game that isn't from a Paragon or true instakill[[/note]] as well as significant splash damage. At the time of its introduction, this could instantly and completely destroy any bloon, notably being the only thing that could definitively one-shot a Z.O.M.G.,[[note]]For reference, a Z.O.M.G. has 4,000 HP, and fortified Bloons didn't exist at the time, meaning it'd only become able to survive the missile in ''very'' late Freeplay rounds.[[/note]] and any surplus damage from destroying the initial target is shunted onto nearby bloons, allowing it to possibly eliminate groups of blimps at a time. Even when the B.A.D. was introduced, it still remained a useful tool for taking it down as it can take out ''half'' of a
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* SicklyGreenGlow: Bloons affected by the Bloontonium Reactor are indicated with a bright green glow.
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* SicklyGreenGlow: Bloons affected by the Bloontonium Reactor are indicated with a bright green glow. Getting Heat-tipped Darts will cause the aura to turn red instead, indicating that it can now melt through Leads.
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Its Paragon upgrade is the Nautic Siege Core, which launches an unending barrage of airburst rockets at any target in range of itself or other towers while nuking anything that enters the screen with pre-emptive missiles. It can also submerge to generate an extremely powerful radiation aura that vaporizes most lesser threats, while retaining the Energizer's passive and granting massive offensive buffs in its range. Either form also has access to the Final Strike ability, which completely obliterates and irradiates an area of its choosing.
to:
Its Paragon upgrade is the Nautic Siege Core, which launches an unending barrage of airburst rockets at any target in range of itself or other towers while nuking anything that enters the screen with pre-emptive missiles. It can also submerge to generate an extremely powerful radiation aura that vaporizes most lesser threats, while retaining the Energizer's passive and granting massive offensive buffs to Subs and Heroes in its range. Either form also has access to the Final Strike ability, which completely obliterates and irradiates an area of its choosing.
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* AllYourPowersCombined: The Monkey Sub Paragon, the Nautic Siege Core, has the psuedo-infinite range of Advanced Intel and fires an unending stream of sharply homing missiles, along with pre-emptive missile strikes on every bloon that enters the screen. In its submerge mode, it gains a much stronger radiation aura and retains Energizer's cooldown reduction passive (which can now also affect Paragons), in addition to granting hefty damage and pierce buffs to Subs and Heroes in the radius. Finally, it has the Final Strike ability which, after a 15 second delay, strikes targets with three nuclear missiles that do tremendous damage and leave behind lethal pools of radiation. This power set combines features from the Energizer, Pre-Emptive Strike, and Sub Commander.
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** The tier five Sub Commander provides a massive pierce buff and ''doubled'' damage to all Monkey Subs in its radius. With the appropriate Monkey Knowledge, the range limitation is removed, and ''all subs onscreen'' get the bonus just for having a Sub Commander on the track. This is particularly notable with another Sub armed with Pre-Emptive Strike, as while the doubled damage won't affect First Strike Capability, it ''will'' affect its pre-emptive missiles, notably giving them enough damage to severely injure or one-shot anything below a B.F.B. before they can even enter the screen.
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** The tier five Sub Commander provides a massive pierce buff and ''doubled'' damage to all Monkey Subs in its radius. With the appropriate Monkey Knowledge, the range limitation is removed, and ''all subs onscreen'' get the bonus just for having a Sub Commander on the track. This is particularly notable with another Sub armed with Pre-Emptive Strike, as while the doubled damage won't affect First Strike Capability, it ''will'' affect its pre-emptive missiles, notably giving which until later Freeplay will give them enough damage to severely injure or one-shot anything below a B.F.B. before they can even enter the screen.
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Its Paragon upgrade is the Nautic Siege Core, which launches an unending barrage of airburst rockets at any target in range of itself or other towers while nuking anything that enters the screen with pre-emptive missiles. It can also submerge to generate an extremely powerful radiation aura that vaporizes most lesser threats, while retaining the Energizer's passive and granting massive offensive buffs in its range. Either form also has access to the Final Strike ability, which completely obliterates and irradiates an area of its choosing.
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** The tier five Sub Commander provides a massive pierce buff and ''doubled'' damage to all Monkey Subs in its radius. With the appropriate Monkey Knowledge, the range limitation is removed, and ''all subs onscreen'' get the bonus just for having a Sub Commander on the track.
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** The tier five Sub Commander provides a massive pierce buff and ''doubled'' damage to all Monkey Subs in its radius. With the appropriate Monkey Knowledge, the range limitation is removed, and ''all subs onscreen'' get the bonus just for having a Sub Commander on the track. This is particularly notable with another Sub armed with Pre-Emptive Strike, as while the doubled damage won't affect First Strike Capability, it ''will'' affect its pre-emptive missiles, notably giving them enough damage to severely injure or one-shot anything below a B.F.B. before they can even enter the screen.
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* OneHitKill: First Strike Capability launches a super-powerful missile at the strongest bloon on the map, dealing ''10,000'' damage on impact[[note]]The most damage done by a single attack in the game until the Paragons were introduced[[/note]] as well as significant splash damage. At the time of its introduction, this could instantly and completely destroy any bloon, notably being the only thing that could definitively one-shot a Z.O.M.G.,[[note]]For reference, a Z.O.M.G. has 4,000 HP, and fortified Bloons didn't exist at the time, meaning it'd only become able to survive the missile in ''very'' late Freeplay rounds.[[/note]] and any surplus damage from destroying the initial target is shunted onto nearby bloons, allowing it to possibly eliminate groups of blimps at a time. Even when the B.A.D. was introduced, it still remained a useful tool for taking it down as it can take out ''half'' of a non-fortified B.A.D's base HP in one shot, and will completely obliterate the thing if it deals the finishing blow, which usually just needs the blimp to be softened up a bit. Its immense damage also makes it a valuable asset against early Boss Bloon tiers, especially for speedruns.
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* OneHitKill: First Strike Capability launches a super-powerful missile at the strongest bloon on the map, dealing ''10,000'' damage on impact[[note]]The most damage done by a single attack in the game until the Paragons were introduced[[/note]] that isn't from a Paragon or true instakill[[/note]] as well as significant splash damage. At the time of its introduction, this could instantly and completely destroy any bloon, notably being the only thing that could definitively one-shot a Z.O.M.G.,[[note]]For reference, a Z.O.M.G. has 4,000 HP, and fortified Bloons didn't exist at the time, meaning it'd only become able to survive the missile in ''very'' late Freeplay rounds.[[/note]] and any surplus damage from destroying the initial target is shunted onto nearby bloons, allowing it to possibly eliminate groups of blimps at a time. Even when the B.A.D. was introduced, it still remained a useful tool for taking it down as it can take out ''half'' of a non-fortified B.A.D's base HP in one shot, and will completely obliterate the thing if it deals the finishing blow, which usually just needs the blimp to be softened up a bit. Its immense damage also makes it a valuable asset against early Boss Bloon tiers, especially for speedruns.
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* SupermanSubstitute: [[PrimaryColorChampion Blue, red and yellow color scheme?]] Check. BadassCape? Check. SuperStrength? Check (see above). ChestInsignia? Check. It even acquires EyeBeams on one of its upgrade paths.
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* NoKillLikeOverkill: You can't really get much more overkill than popping balloons by '''summoning a vengeful god'''.
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The various defensive monkeys and towers that can be placed to aid the fight against the bloons.
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Splitting main character index into three to shorten page length.
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[[center:[[WMG:''VideoGame/BloonsTowerDefense'' '''[[Characters/BloonsTowerDefense Main Character Index]]'''\\
'''Towers''' | [[Characters/BloonsTowerDefenseHeroes Heroes]] | [[Characters/BloonsTowerDefenseBloons Bloons]]]]]]
!!Towers introduced in Bloons Tower Defense:
[[folder:Dart Monkey]]
[[quoteright:325:https://static.tvtropes.org/pmwiki/pub/images/btd6dart.png]]
'''Class:''' Primary
The most basic unit you get. Shoots a single dart that pops a single bloon (except in ''6'', where it can now pop 2).
Its upgrade paths in [=BTD5=] are the Spike-o-Pult, which launch spiked balls that can pop a very large number of bloons before stopping, and Super Monkey Fan Club, which temporarily transforms it and other nearby dart monkeys into Super Monkeys.
In Bloons TD 6, it keeps the Spike-o-Pult and Super Monkey Fan Club upgrade paths, respectively adding to them the Ultra-Juggernaut which can split into even more Juggernaut balls, and the Plasma Monkey Fan Club which converts nearby Dart Monkeys into Plasma Monkeys. It also adds the Crossbow upgrade path, which specializes in popping multiple layers at the same time and culminating in the Crossbow Master, dealing high damage at a rapid pace from long range.
Its Paragon upgrade is the Apex Plasma Master, which rapidly fires bouncing, splitting, spiked plasma balls to decimate everything on the screen.
----
* AllEncompassingMantle: x/4 Dart Monkeys have green ones in [=BTD5=]. The Crossbow Master wears a black one in 6.
* AllYourPowersCombined: The Dart Monkey Paragon, the Apex Plasma Master, rides a gigantic ballista crossbow which rapidly fires three plasma Ultra-Juggernaut balls, combining the attacks of the Ultra-Juggernaut, Plasma Monkey Fan Club, and Crossbow Master.
* AutomaticCrossbow: Bottom path Dart Monkeys in 6 equip a fast-firing crossbow.
* BoringButPractical: Cheap, simple, yet undoubtedly effective, with its upgrades surprisingly carrying over well into the lategame. Even the [[AllYourPowersCombined Apex Plasma Master]] is BoringButPractical by Paragon standards, being weaker but comparatively cheap.
* CompositeCharacter: The Spike-o-Pult was one of the new towers in [=BTD3=], but [=BTD4=] fused it with the Dart Monkey due to their similarities and has remained one of its upgrade paths since then.
* CriticalHit: The Sharp Shooter upgrade in [=BTD6=] causes one out of every few shots to deal much more damage. This ability gets enhanced for the Crossbow Master
* ElementalRockPaperScissors: Juggernaut deals five times the damage to Ceramic Bloons, while the Ultra-Juggernaut bumps it up to eight times (five times for the split balls). The Apex Plasma Master deals ''105'' Ceramic damage at base.
* HyperDestructiveBouncingBall: In ''[=BTD6=]'', the Spike-o-pult and its upgrades throws spiky balls that can bounce around obstacles. While it's a niche utility for the most part, it's good for maps with a lot of obstacles, especially after an update that allows a bouncing spikeball to re-hit a Bloon. The Ultra-Juggernaut is nightmarishly strong in maps like Moon Landing and Cornfield because of all the obstacles the balls can bounce from.
* MagikarpPower: Because the power of the basic Dart Monkey is low, the difference between it and a fully upgraded version is immense. The basic version throws a small dart a moderate distance about once a second for one damage. The Ultra-Juggernaut throws a gigantic spiked ball that can pierce through tons of Bloons and split into even more projectiles; the Plasma Monkey Fan Club can transform other Dart Monkeys into powerful Super Monkeys with plasma vision temporarily; and the [[MasterOfAll universally useful]] Crossbow Master shoots giant armor piercing drill-bolts halfway across the map eight times a second for six damage with a ton of pierce, can see and hurt anything, and does massive fifty-damage hits more than once a second. If you can afford the Paragon upgrade, the Apex Plasma Master, you get a rapid-firing tower that launches heavily-damaging projectiles that cover nearly the entire map.
* MultiShot: Triple Shot allows the Dart Monkey to throw three darts at once.
* NonIndicativeName: Dart Monkeys who have the Spike-o-pult upgrade or the Crossbow upgrade and above are still called Dart Monkeys.
* OneHitPolykill: A Dart Monkey can upgrade to pop 2, then 4 bloons per shot if fired down a straight line. On the other hand, the Spike-o-Pult can pop up to 18 bloons in one go, and the Juggernaut can pop up to ''104''.
* PinballProjectile: Juggernaut shots can bounce off of walls that would block other projectiles.
* RecursiveAmmo: The Ultra-Juggernaut fires one Juggernaut ball which splits into six more.
* SiegeEngines: Spike-o-Pult and Juggernaut have the monkey switch out their hand-thrown darts for a slower-firing catapult which launches giant spiked balls.
* SpikeBallsOfDoom: The Spike-o-Pult launches large spiked balls that can pop up to 18 bloons. Juggernaut's spiked balls are several times the monkey's size. The Ultra-Juggernaut then bursts into six more Juggernaut balls when reaching the edge of the screen.
* StartingEquipment: The first monkey you unlock in every game it appears in. Even in a session, it's also the cheapest Monkey available to buy. In ''[=BTD6=]'', there's even a TechTree upgrade that makes the first Dart Monkey free to place.
* SuperMode: Super Monkey Fan Club transforms it and around 10 other Dart Monkeys in its vicinity into [[SpamAttack Super Monkeys]] for 15 seconds. ''[=BTD6=]'' adds a further upgrade, Plasma Monkey Fan Club, which converts up to 20 Dart Monkeys and grants them [[EyeBeams plasma vision]].
* ThisLooksLikeAJobForAquaman: The Juggernaut and Ultra-Juggernaut upgrades are much more useful in maps where they can bounce a lot, such as Cornfield, Moon Landing, Encrypted, or Hedge. This also applies to the Paragon, Apex Plasma Master: maps which have tight quarters can drastically magnify the damage it puts out, making it very cost-efficient for a Paragon (and it is already the cheapest Paragon in the game).
* ZergRush: Their cheap costs allows them to be spammed quite liberally. It's even encouraged with the Super/Plasma Monkey Fan Club ability, which temporarily superbuffs other Dart Monkeys. In ''6'', the Monkey City upgrade of the Village also gives you one free Dart Monkey every round.
[[/folder]]
[[folder:Tack Shooter]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6tack.png]]
'''Class:''' Primary
A short-ranged tower that fires 8 tacks all around it. Excellent for corners or other choke points.
Its upgrade paths in [=BTD5=] are the Tack Sprayer, which launches 16 tacks instead of 8 and can be upgraded to the Ring of Fire, which shoots an unavoidable circle of flames, and the Blade Shooter, which fires large blades with increased popping power and can be upgraded to the Blade Maelstrom for a deadly barrage of saw blades covering the whole screen.
[=BTD6=] changes up these paths. Its first path is the Hot Shots, which slightly increases attack speed, can pop lead, and leads to the Ring of Fire and Inferno Ring abilities, the latter of which can periodically fire a powerful meteor with infinite range. The second path is the Blade Shooter, which is similar to how it was in [=BTD5=]. Its third path is the Tack Sprayer, which also is mostly unchanged, but leads to Overdrive and The Tack Zone, which fire huge amounts of tacks at an extremely high rate.
----
* BoringButPractical: Not a very flashy attacker, but the Tack Shooter is very cheap and one of the most cost-effective ways to thin out bloon rushes: in theory, it can do 8 damage per shot without needing any upgrades, much more than any other similarly-priced base tower (though reaching this maximum is very situational and only possible in certain positions).
* CloseRangeCombatant: Has incredibly short range which emphasizes its dense spray of tacks well. It does have several upgrades to mitigate this weakness, however.
* DeadlyDisc: The Blade Shooter upgrade allows them to fire buzzsaws instead of tacks which are harder to miss and can pop more bloons.
* ExactlyWhatItSaysOnTheTin: While most of the upgrade descriptions are very direct, the Tack Shooter deserves a mention.
-->'''Faster Shooting:''' Shoots tacks faster.
-->'''Even Faster Shooting:''' Shoots tacks even faster!
* FireBreathingWeapon: The Ring of Fire shoots a fiery burst that burns through bloons, including Lead and Frozen bloons.
* MultiDirectionalBarrage: Their specialty is firing all around themselves indiscriminately. Blade Maelstrom allows it to unleash this ''on the entire screen.''
* MultiShot: Tack Shooters fire 8 shots at a time, and with the Tack Sprayer upgrade that can increase to 18.
* NonIndicativeName: Tack Shooters with the Ring of Fire upgrade or the Blade Shooter upgrade and above are still called Tack Shooters.
* OneHitPolykill: Blade Shooter allows it to tear through multiple bloons per shot, while Ring of Fire lets it pop up to 60 per burst. Blade Maelstrom and Super Maelstrom, on the other hand, can pop many, many more Bloons per blade.
* ScissorsCutsRock: The Super Maelstrom upgrade allows the Tack Shooter to pop Lead bloons with regular blades, even though the previous upgrades cannot do so.
* SentryGun: {{Subverted}}. It appears to be a fully-automatic bloon-popping machine, but as seen in ''[[VideoGame/BloonsTDBattles Bloons TD Battles 2]]'', there's a monkey hiding inside.
* SimpleYetAwesome: The bottom path upgrades, instead of giving it more powerful projectiles or new abilities, just directly upgrade the Tack Shooter's rate of fire and let it fire more and more tacks, to devastating effect.
* SpikeShooter: It shoots 8 tacks in a ring around it, which can be increased in number as it upgrades. While the bottom path increases the amounts of tacks fired to a ludicrous level, the top and middle path [[AvertedTrope replace the tacks with something else]], however.
* StormOfBlades: Its Blade Maelstrom ability produces this, though with sawblades.
* TruthInTelevision: Bloons Monkey City reveals that the Ring of Fire uses [[https://en.wikipedia.org/wiki/Thermite Thermite]], an extremely flammable incendiary exponent, as fuel.
[[/folder]]
[[folder:Ice Tower/Ice Monkey]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6ice.png]]
'''Class:''' Primary
A short-ranged support tower that unleashes cold blasts to briefly freeze bloons solid. Frozen bloons cannot move, but also cannot be harmed by piercing weapons.
In [=BTD5=], its first upgrade path grants it the Arctic Wind ability, which greatly increases its range and slows down all nearby bloons, and Viral Frost, which causes frozen bloons to freeze any other bloon that touches it. Its second upgrade path grants it Ice Shards, which causes frozen bloons to explode when popped, damaging other nearby bloons, and Absolute Zero, an active ability which freezes every bloon on the screen except for [=MOABs=].
In [=BTD6=], its upgrades are changed. The top path contains Ice Shards, and adds the Embrittlement and Super Brittle abilities, which increase damage taken by frozen bloons. The middle path contains the Arctic Wind, Snowstorm (an active ability similar to Absolute Zero in [=BTD5=]), and Absolute Zero upgrades. The bottom path is the most unique, granting the Ice Monkey a Cryo Cannon which doesn't freeze bloons in a circle around it, but rather shoots explosive projectiles that can freeze foes from afar, and can be further upgraded with Ice Shards and Icicle Impale, which deals extra damage to MOAB-class bloons. All tier 5 abilities are capable of freezing [=MOABs=].
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* AllEncompassingMantle: An 4/x Ice Tower has a blue one in [=BTD5=].
* AmazingTechnicolorPopulation: Most of the standard monkeys are brown, but Ice Monkey has white fur and dark blue skin.
* BattleAura: Arctic Wind gives it an aura that passively slows bloons just by being near them.
* {{BFG}}: The Cryo Cannon upgrade and further iterations. Special mention to Icicle Impale, whose cryo cannon is so big that the Ice Monkey wielding it has to lean to counter its weight.
* BigfootSasquatchAndYeti: The tower's appearance in [=BTD5=] and games after it have a yeti-like design with white, slightly scruffier fur, fitting with their ice powers. It's more pronounced in upgrades such as Ice Shards or Super Brittle.
* CloseRangeCombatant: Has incredibly short range. Cryo Cannon remedies this by turning it into a more standard shooting tower with a long attack range.
* DamageIncreasingDebuff: The Embrittlement upgrade makes all bloons affected by an Ice Monkey's freeze take more damage while frozen, including MOAB-class bloons (although they still can't be frozen). Super Brittle significantly improves the damage amplification.
* EarlyInstallmentCharacterDesignDifference: In the first four games, Ice Towers were machines like the Tack Shooter and Bomb Tower, appearing as a snowglobe-like device that froze surrounding Bloons. The fifth game changed the tower into a white yeti-like monkey with ice powers, and this was kept starting from ''Bloons Monkey City'' alongside changing its name from Ice Tower to Ice Monkey.
* HarmlessFreezing: Prior to [=BTD6=], Ice Monkeys can't damage bloons until they are upgraded with Snap Freeze.
* HerdHittingAttack: The main draw of using the Ice Tower is its very high popping power for a base tower, even more than that of a Bomb Tower.
* AnIcePerson: Originally the tower was a freezing machine, but [=BTD5=] onwards makes it an ice-elemental monkey.
* ImprovisedPlatform: The Arctic Wind upgrade in ''6'' freezes nearby water, allowing land-based towers to be placed on water, which normally would be impossible. Notably, this allows normally land-based units to benefit from buffs normally exclusive to aquatic towers, such as Carrier Flagship and Energizer.
* KillItWithIce: With the Snap Freeze upgrade, frozen bloons are popped once. In [=BTD6=], this ability is included by default.
* LiterallyShatteredLives: Weaponized with Ice Shards - frozen bloons will explode into damaging ice shards when popped, hitting even more bloons around it.
* MythologyGag: The "Snowstorm" upgrade for the Ice Monkey in [=BTD6=] has it stand atop a miniature mountain that looks incredibly similar to the original Ice Tower.
* NoSell:
** Absolute Zero can freeze White and Zebra bloons, which are normally immune to its attacks.
** In [=BTD6=], they're immune to the freezing effects in the Glacial Trial map.
* ScissorsCutsRock: The Icicle Impale upgrade allows the Ice Monkey to pop and freeze White and Zebra bloons.
* StatusEffects: Can freeze enemies, and slow them with certain upgrades.
* SupportPartyMember: In games before [=BTD6=], it can't deal damage without Snap Freeze, but can immobilize and slow down enemies. In [=BTD6=], it gains increased supportive utility with its new paths, such as the [[DamageIncreasingDebuff Embrittlement and Super Brittle upgrades]], as well as the Icicle Impale, slowing even the toughest of MOAB-class bloons to a crawl.
* UnwantedAssistance: Ice Towers can occasionally be seen as this, since frozen bloons can NoSell piercing weapons.
* TheVirus: Viral Frost has an interesting variation. It freezes bloons so cold that any bloon that so much as ''touches'' a frozen bloon will also be frozen solid. This allows the freeze to spread incredibly fast, pretty much completely immobilizing all and any bloons aside from MOAB-classes.
[[/folder]]
[[folder:Bomb Tower/Bomb Shooter]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6bomb.png]]
'''Class:''' Primary
A mid-ranged cannon that launches explosive bombs to deal area damage.
In [=BTD5=], its first upgrade path has the Cluster Bomb ability, which launches secondary bombs from the explosion to increase the affected radius, and Bloon Impact, which briefly stuns affected bloons. The second upgrade path focuses on damaging MOAB-Class bloons with MOAB Mauler, which deals extra damage to them, and MOAB Assassin, which fires a powerful missile towards the nearest MOAB and deals huge damage.
[=BTD6=] changes around the upgrade paths. The first one leads to Bloon Impact, which can be upgraded into the even more powerful and explosive Bloon Crush, stunning crowds of bloons with the sheer explosive force of the blasts. The second remains mostly the same, with the addition of the MOAB Eliminator, which deals much more damage with a shorter ability cooldown. The bottom path gains Cluster Bombs, and can be upgraded to have the smaller bombs [[RecursiveAmmo each explode into a cluster bomb again]] with Recursive Cluster and the more devastating Bomb Blitz, which [[DesperationAttack deals huge damage to everything onscreen the moment a bloon leaks]].
----
* BoringButPractical: The Bomb Tower has arguably the least impressive upgrade cosmetics of any tower, which is particularly notable in ''[=BTD6=]''. While the majority of the towers get some drastic makeovers with only a few upgrades, and are borderline unrecognizable once they get to tier 5, the Bomb Tower tends to look more or less exactly as it did at level 1, just bigger and with some color highlights. The only path that drastically changes its appearance is path 2 which instead turns it into a missile launcher, in which case it's basically just a black missile with a face painted on it.
* CartoonBomb: What it normally fires, unless you upgrade it into Missile Launcher.
* CripplingOverspecialization: The second upgrade path for the Bomb Shooter is very good at dealing with MOAB-Class Bloons (as well as decent against Ceramic Bloons) as the names of their upgrades imply, but it's underwhelming against everything else.
* DesperationAttack: Bomb Blitz's hidden ability, which [[SmartBomb wipes the screen]] if a life is lost.
* ElementalRockPaperScissors: MOAB Mauler and MOAB Assassin incur massive damage to MOAB-class bloons.
* FlechetteStorm: The Frag Bombs upgrade causes each bomb to shatter into deadly shrapnel. Note that this allows the Bomb Tower to pop Black and Zebra Bloons, which otherwise NoSell its attacks.
* NoSell: While Black/Zebra/D.D.T bloons normally are immune to its blasts, Frag Bombs allows it to damage explosive-resistant enemies nonetheless. While it loses this ability when it upgrades to Cluster Bombs, it regains it with Bloon Impact, which is able to pop explosive-resistant bloons with raw blast power. In addition, MOAB Eliminator can deal damage to Black/Zebra bloons even though it's an explosive.
* RecursiveAmmo: The Cluster Bombs upgrade causes its bombs to split into 8 more bombs upon impact. Beware that this will override Frag Bombs, allowing Blacks/Zebras to NoSell its attacks once more (although the following upgrade, Bloon Impact, allows it to pop Black/Zebra bloons by virtue of its sheer power). Returns in 6, with the next upgrade allowing its recursive bombs to recur again every few shots! It doesn't actually split into more explosions, rather it repeats the main cluster bomb twice. It still does loads of damage.
* ScissorsCutsRock: The Cluster Bombs upgrade (and subsequent Path 3 upgrades) in [=BTD6=] allow the Bomb Shooter to damage Black and Zebra Bloons regardless of cross-pathing. On other upgrade paths, MOAB Eliminator and Bloon Impact provide the same trait.
* SentryGun: It's an autonomous cannon which fires at nearby bloons automatically. ''VideoGame/BloonsPop'' shows that it can talk.
* SmartBomb: Its Bomb Blitz upgrade automatically deals heavy damage, enough to wipe out most bloon types, with a huge series of explosions triggered when a life is lost.
* StatusEffects: Bloon Impact hits bloons so hard that it momentarily stuns them along with damaging them. In ''[=BTD6=]'', Bloon Impact can be upgraded even further to Bloon Crush, which stuns longer and can affect even MOAB-class Bloons.
* ThereIsNoKillLikeOverkill: MOAB Assassin can OneHitKill anything that isn't a ZOMG, a BAD, or a boss, but there's nothing stopping you from using it on normal bloons either. This isn't the case in [=BTD6=], as the ability cannot be triggered if a MOAB class bloon isn't on screen.
* WeaponOfXSlaying: The MOAB Mauler has no special traits outside of dealing significantly more damage to MOAB-Class Bloons than against anything else.
[[/folder]]
[[folder:Super Monkey]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6super.png]]
'''Class:''' Magic
The most expensive but arguably most powerful monkey. Shoots long-ranged darts at, what else, SuperSpeed, and can be upgraded to use powerful EyeBeams.
Its final upgrades in [=BTD5=] are Temple of the Monkey God, which sacrifices nearby towers to increase its power, and Technological Terror, which wields two independently-aimed guns and can create a powerful pulse that annihilates anything in a short radius.
[=BTD6=] allows it to improve the previous paths into the True Sun God and The Anti-Bloon respectively, and also adds the Dark Knight upgrade path, which can pop and knock back any type of bloon (including camos), deals greater damage to MOAB-class bloons, and briefly blocks all damage to your lives whenever a bloon leaks if fully upgraded. With a Monkey Knowledge perk, a fully built True Sun God can sacrifice an Anti-Bloon and Legend of the Night to become a Vengeful True Sun God, one of the strongest individual towers in the entire game.
----
* AllYourPowersCombined:
** The Temple of the Monkey God gains more projectiles depending on how many towers it consumes. If you have a max-sacrifice Temple, it could be firing rockets, buzzsaws, ice blasts, tornadoes, and glue blasts along with its sun beam.
** With an update for [=BTD6=], [[FusionDance There Can Be Only One]].[[note]]A monkey knowledge point allows a hidden transformation for the True Sun God if you fulfil its requirements: maxed out sacrifices for both the Sun Temple and the True Sun God, and have all other Tier 5 Super Monkeys present upon upgrading your temple to True Sun God.[[/note]]
* ArmCannon: The Technological Terror boasts two of these that apparently fire beams of antimatter.
* AttackOfTheFiftyFootWhatever: The True Sun God is absolutely enormous, dwarfing even the temple it uses as a meditation platform.
* AwesomeButImpractical: The Sun Temple in both games it appears in. It's without a doubt the strongest offensive tower in the game, and its sacrifices can make it even stronger and more versatile. However, in order to fund such a temple requires income that can easily win most standard game modes ten times over, and affording a temple is nigh-unfeasable in CHIMPS as you simply don't gain enough money over the course of the game for one. Temples truly shine in freeplay, where the ZergRush of high-tier blimps justifies the cost in investing in one.
* BadassBoast: The Sun Avatar's description in previous games.
-->'''''In [=BTD4=]:''''' ''Legend speaks of a being that fears no bloon.''
-->'''''In [=BTD5=]:''''' ''It is said that bloons dare not touch the sun.''
* TheBigGuy: Super Monkeys are by far the largest of the monkey towers (with the Super Monkey in [=BTD6=] being as large as a house, even!), as well as the tower with the greatest offensive strength.
* BlueIsHeroic: Their default outfits have blue, and they're heroes.
* CaptainErsatz: Super Monkeys are, what else, a monkey ComicBook/{{Superman}}.
* TheCowl: In [=BTD6=], the third upgrade path starting with Dark Knight turn the Super Monkey into a ComicBook/{{Batman}} look-alike.
* CriticalHitClass: The second upgrade path in [=BTD6=], from the Robo-Monkey upgrade onwards, allows the Super Monkey to deal critical hits every few shots (the frequency and damage multiplier increasing with each upgrade).
* CyberneticsEatYourSoul: Bloons Monkey City states that Technological Terrors have lost the last of their monkey biology to become popping machines.
* {{Cyborg}}: Robo-Monkey is half robot. Technological Terror forsakes the last remnant of the monkey.
* EarlyBirdCameo: In [=BTD4] Expansion, the map "Monkey Temple" has a special secret where you can sacrifice a large amount of cash and towers to activate the temple's power, turning it into a powerful tower that can help pop the bloons. The Sun Temple would become a proper tower/upgrade in [=BTD5=] as the Super Monkey's final top path upgrade.
* EyeBeams: Can be upgraded to shoot lasers from its eyes. It can then be upgraded further to fire plasma, then ''sun rays''.
* FluffyTheTerrible: [[https://www.reddit.com/r/NinjaKiwiOfficial/comments/ol9feo/whats_up_at_ninja_kiwi_16th_july_2021/ Frankie Fitzgerald]]. Sounds like a normal name, but it belongs to the Vengeful True Sun God, one of the most powerful towers in the entire [=BTD6=] game.
* GuideDangIt: In BTD 6, the Super Monkey's darts ''look'' just like the basic Dart Monkey's[[note]]which most players will be ''much'' more familiar with due to unlocking it earlier[[/note]], and since they're both just called "darts" by the game, it's intuitive to think they'd have the same in-game properties.
** However, each individual dart thrown by the Super Monkey only pops a ''single'' Bloon before disappearing, unlike the Dart Monkey's [[OneHitPolykill three]][[note]]and you in fact have to upgrade to ''Plasma Blasts'' just to get ''the same'' penetration power out of the Super Monkey's attacks[[/note]].
** This makes the (basic) Super Monkey's damage still impressive against ''single'' targets, given its [[SpamAttack sheer fire rate]], but somewhat underwhelming against crowds of massed Bloons, for a reason that's not immediately obvious from the in-game information alone.
* GunsAkimbo: The Robo Monkey uses a pair of blasters that can target bloons independently.
* HumanSacrifice: The Temple of the Monkey God will sacrifice and consume all towers nearby upon his purchase. However, each tower absorbed will boost his already-staggering power even further.
* HumongousMecha: The Technological Terror, and by extension the Anti-Bloon.
* InfinityPlusOneSword: By far the most expensive tower to buy and even more expensive to upgrade, but boasts impossible firepower. Especially the Sun God upgrade path, as they are the most powerful and the most expensive upgrades to purchase in every game they've appeared in. They even have a sacrifice ability unique to them which increases their powers even more - the True Sun God upgrade costs more than certain Paragon upgrades and is just as powerful (if not more) than them, despite "only" being the final top path upgrade for the Super Monkey.
* InstantDeathRadius:
** The Technological Terror's ability instantly kills any non-ZOMG within its range.
** The Anti-Bloon's variant comes not only with a bigger radius but packs damage even greater than a ''[[NukeEm Tsar Bomba]]''.
* LaterInstallmentWeirdness: The Sun God upgrade was renamed to the Sun Avatar in ''[=BTD6=]'', as a way to differentiate them from the new True Sun God upgrade.
* LogicalWeakness:
** Being gigantic temple structures or a massive PhysicalGod monkey, the Temple of the Monkey God in ''[=BTD5=]'', as well as the Sun Temple and True Sun God in ''[=BTD6=]'', cannot be relocated by the Support Chinook ability.
** Since the Sun Temple feeds on a Legend of the Night in order to become the Avatar of the Vengeful Monkey, the black hole passive ability is lost - this is essentially the lone noticeable disadvantage from the upgrade. Furthermore, the Legend of the Night itself and the Anti-Bloon cannot be obtained again unless the Avatar is sold.
* TheMinionMaster: In ''[=BTD6=]'', a Sun Temple or above with sufficient magic sacrifices will spawn miniature Sun Avatars to fight alongside itself. Aside from its tiny footprint, they're as deadly as the real deal.
* MoneyMultiplier: The Temple of the Monkey God, Sun Temple, and True Sun God can give money at the end of a round with sacrificed Support towers. The amount of money depends on how expensive the sacrifices were.
* MultiShot: Many Super Monkey upgrades increase the amount of shots it puts out through this way, since it's already attacking at near-max speed:
** The Sun Avatar fires 3 sunrays at a time.
** This is the Robo Monkey's entire gimmick, doubling up on its main blast attack.
** Dark Champion dual-wields shuriken blades.
* {{Nerf}}: In '''[=BTD6=]''', the Super Monkey's footprint is much bigger,[[note]]They are roughly the same size as the Monkey Village[[/note]] preventing stacking as many Super Monkeys as you could before.
* OneHitKill:
** The Tech Terror comes with the Bloon Annihilation ability, which instantly fries everything up to BFB bloons within range and deals immense damage to anything that survives. Upgrading it into The Anti-Bloon increases the Annihilation's damage and range.
** The Legend of the Night has a passive ability where it summons a black hole whenever a Bloon is about to leak. The black hole will delete any Bloons that come into contact with it, no matter how strong. Yes, this includes the [[BeyondTheImpossible BAD]], which is immune to any other forms of instant-kill. This comes at the price of not gaining any money from the deleted Bloons, and the ability has a long cooldown before it can activate again.
* OneHitPolykill: While a normal Super Monkey can only pop 1 bloon per dart (although it throws them like a machine gun), the path 1 upgrades increase its pierce to 2, 4, 18, and 50 respectively. Tech Terror can pop up to 7 per shot if fully upgraded.
* PhysicalGod: The Sun God and Temple of the Monkey God. ''[=BTD6=]'' allows it to be upgraded further into the True Sun God, and the weaker Sun God upgrade is renamed Sun Avatar. The True Sun God can even spawn smaller Sun Avatars to attack Bloons.
* ThePowerOfTheSun: The Sun Avatar and Temple of the Monkey God use sunrays to attack, which can pop any kind of bloon except the new [[ResistantToMagic Purple Bloons]] in the case of the Sun Avatar, and even that can be solved with the Monkey Knowledge, "Strike Down The False".
* RedEyesTakeWarning: Technological Terror, the Anti-Bloon, and The Avatar of the Vengeful Monkey have these. Considering how powerful these towers are, the warning should be heeded by the bloons.
* ScissorsCutsRock:
** Even though it's a well-established fact in the franchise that Lead Bloons are immune to sharp projectiles and lasers, Robo-Monkeys in [=BTD5=] could pop Lead Bloons even when they lacked the Plasma Blasts upgrade. This was fixed in [=BTD6=], where it requires said upgrade or Tech Terror to pop Lead Bloons on its own.
** In [=BTD6=] the "Strike down the false" monkey knowledge allows Sun Avatars to pop purple bloons while Sun Temples and the True Sun God can do so by default. The Dark Champion and the Legend of the Night upgrades are also capable of popping all bloon types. The Middle Path Super Monkey is capable of bypassing its resistances as well with the Anti Bloon upgrade, while the Tech Terror can do so as well if it uses the annihilation ability.
* SimpleYetAwesome: The Sun Avatar fires 3 streams of sun energy at the bloons. Not very flashy compared to the temples, but it excels at taking down bloon rushes and getting enough of them will crush even the strongest bloons like they're nothing. A Sun Avatar with Knockback is arguably one of the best towers in 6, as its high pierce coupled with the Knockback and Ultravision upgrades allows it to single-handedly deal with nearly all bloon rushes that can be thrown at it.
* ShoutOut:
** The default look of the Super Monkey is clearly based on ComicBook/{{Superman}} with its blue suit and red cape.
** The visor the Super Monkey gets with the Laser Vision upgrade resembles the one used by ComicBook/{{Cyclops}}.
** The Robo-Monkey upgrade gives the Super Monkey Franchise/RoboCop's helmet.
** The Dark Knight upgrade is based on ComicBook/{{Batman}}, wearing a cowl and throwing batarangs.
* SlowLaser: Its laser and sun-based attacks do move pretty fast, but they're still very clearly not moving at the speed of light.
* SuperStrength: How else could it fire 20 darts a second at a distance that even a missile launcher couldn't hope to surpass?
* SuperpoweredEvilSide:
** The Temple of the Vengeful Monkey, a red-and-black Temple of the Monkey God that transforms from it for a short time through an activated ability unlocked with a Tier 4 Super Monkey Lair. While it only lasts a couple of seconds, it increases its range while [[ThereIsNoKillLikeOverkill massively increasing its already-ludicrous damage output.]]
** In [=BTD6=], if you fulfill certain requirements when upgrading into a True Sun God[[note]]The Sun Temple must have 3 out of the 4 categories of primary, military, magic, and support maxed out of more than 50,000 dollars each, then before upgrading to the True Sun God, have all 4 categories maxed out with both the Anti-Bloon and the Legend of the Night outside of the Temple's range[[/note]], it will transform further into the Vengful True Sun God. It acts the same way as a normal True Sun God, except it's red and black and deals doubled damage with all attacks.
* {{Teleportation}}: In [=BTD6=], the Dark Knight upgrade gives it the ability Darkshift, which allows its to teleport and move a short distance. Upgrading to Dark Champion allows it to teleport anywhere.
* UnderwearOfPower: They're superhero-like towers and they look like they're wearing underwear.
* UnrealisticBlackHole: The Legend of the Night upgrade allows the Super Monkey to summon a black hole when any Bloon is about to leak. It can instantly make any Bloon disappear, no matter how strong (except bosses). On the other hand, it only affects the Bloons and doesn't affect anything else. The Monkeys can stand one inch away from the black hole and suffer no ill effects. The black hole will also disappear after a few seconds.
* WasOnceAMan: Going down the Robo Monkey path transforms the Super Monkey into a killer cyborg, sacrificing their original monkey self in the process. Upgrading them to a Technological Terror is mentioned in Bloons Monkey City to "remove the last vestiges of monkey biology", meaning that Tech Terrors are [[CyberneticsEatYourSoul no longer simian]].
* WeaksauceWeakness:
** In [=BTD5=], for all of its immense power, the Super Monkey has ''no'' normal upgrades that help with Camo Detection. That means that without anything else to fire at, a Tier 3 Super Monkey Lair, or a Monkey Village nearby, a max-sacrifice Temple of the Monkey God will be unable to stop a single Camo Red Bloon passing by (Tech Terror can use Bloon Annihilation to fry it). However, [=BTD6=] adds the Ultravision upgrade which not only allows it to see but ''deal'' extra damage to camo.
** In [=BTD6=], Laser Vision, Plasma Vision, and the Sun Avatar cannot harm purple bloons without the appropriate Monkey Knowledge/external upgrades.
[[/folder]]
!!Towers introduced in Bloons Tower Defense 2:
[[folder:Boomerang Thrower/Monkey]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6boomerang.png]]
'''Class:''' Primary
A mid-ranged tower which shoots piercing boomerangs that can return to it.
Its final upgrades in [=BTD5=] are Glaive Lord, which throws ricocheting glaives and is surrounded by orbiting blades, and Turbo Charge, whose bionic arm has great attack speed and can temporarily be further boosted.
In [=BTD6=], its first two upgrade paths are similar, but it gains the Kylie Boomerang as its third upgrade path. This boomerang flies in a straight line instead of a curve, and can be upgraded with the MOAB Press and MOAB Domination upgrades to deal increased damage and knockback to MOAB-class bloons.
Its Paragon upgrade is the Glaive Dominus, which maintains the orbital blades and throws both streams of ricocheting glaives and long-ranged explosive shots. It also buffs the attack speed of all Primary towers, including Paragons.
----
* AllEncompassingMantle: The Glaive Lord sports a grey one. In 6, this specific color of cloak is given to MOAR Glaives, while the Glaive Lord itself is draped in [[PurpleIsPowerful purple]].
* AllYourPowersCombined: The Glaive Dominus, the Boomerang Monkey Paragon, rapidly fires glaives in a straight line from its mechanical arm, including a slower-firing longer-range throw which can explode and knock back MOAB-class bloons, on top of being surrounded by three orbiting glaives. These attacks combine the traits of the Glaive Lord, Perma-Charge, and MOAB Domination.
* ArtificialLimbs: The Bionic Boomer upgrade replaces its right arm with a mechanical one that can throw boomerangs much faster.
* BattleBoomerang: Uses these to attack, which appropriately return to it. It can be upgraded to throw bladed glaives, fire incredibly fast, or push back MOAB-class Bloons.
* BoomerangComeback: The idea behind the Kylie Boomerang upgrades in ''[=BTD6=]''. While other projectiles can only hit the same Bloon once, the kylie boomerang can hit multiple times. So it can fly past a Bloon, hitting it, then hit it again on the way back.
* BoringButPractical: MOAB Press might look like an unassuming upgrade, especially when compared to other Tier 4 upgrades, but it's incredibly cheap for its tier, and the MOAB knockback can prove to be surprisingly effective, especially with other countermeasures such as MOAB Glue from a Glue Gunner.
* CripplingOverspecialization: The top path upgrades are highly effective at shredding through regular Bloons, but can’t do much against MOAB-classes. This causes them to [[CrutchCharacter fall off later in the game]], especially past round 80, where Super Ceramics with much more HP start spawning.
* MasterOfTheLevitatingBlades: The Glaive Lord has two glaives that permanently revolve around it, tearing through anything they touch. In [=BTD6=], it's improved to have three rotating glaives which start moving really fast whenever Bloons are near. The three rotating glaives become even more deadly for the Glaive Dominus.
* MoreDakka: Turbo Charge, an ability which temporarily gives it a massive attack speed increase. In ''[=BTD6=]'', the Perma-Charge upgrade permanently grants the Boomerang Thrower the massive speed boost, while [[DiscardAndDraw giving it another ability that increases damage instead]].
* OneHitPolykill:
** The Boomerang Thrower by default can pop 4 bloons (3 before ''[=BTD6=]''), but this can be upgraded to 7, and then 18.
** The Glaive Lord upgrade gives the Boomerang Thrower three rotating glaives with an incredibly high pierce, being able to pop up to 8000 bloons at the same time, per glaive.
* PinballProjectile: The Glaive Ricochet upgrade allows glaives to bounce between bloons.
* PlayingWithFire: Its Red Hot Rangs upgrade sets its projectiles on fire, allowing them to melt Lead Bloons.
* PrecisionGuidedBoomerang: The boomerang it throws has a curved trajectory, and hitting Bloons won't change its path. It only disappears when it has hit enough Bloons. The Glaive Ricochet upgrade changes it into a throwing glaive that [[{{Roboteching}} can seek another target after it hits a Bloon]]. The Kylie Boomerang even allows the Boomerang to hit the same Bloon multiple times while midair.
* VibroWeapon: The Sonic Boom upgrade is implied to turn its boomerangs into this, allowing them to shatter Frozen bloons.
[[/folder]]
[[folder:Road Spikes (Road Item)]]
'''Class:''' Power
A deployable hazard that lays on the path and pops bloons that run into it. Each pile of Road Spikes can pop 10 or 11 bloons.
----
* BoringButPractical: A cheap, spammable source of instant damage: yet they can be used to fend off early rushes or even be spammed in the late game to get a bit more damage on MOAB-class bloons.
* CrutchCharacter: For a certain definition of "character". Road spikes can be useful for saving you some lives, but they can't pop enough bloons to recoup their price, so relying too much on them will end up costing you money that could have gone towards more permanent towers and upgrades, crippling your late-game defense.
* DemotedToExtra: In ''[=BTD6=]'', it's only available as a Power purchasable with Monkey Money or in Geraldo's shop.
* SpikesOfDoom: Well, they're just a pile of tacks, but still.
[[/folder]]
[[folder:Monkey Glue/Glue Trap (Road Item)]]
'''Class:''' Power[[note]]As the Glue Trap[[/note]]
A deployable hazard which lies on the path, slowing down bloons that run into it. Each glob of Monkey Glue can slow down 20 bloons before wearing out.
----
* TheArtifact: Bloons TD 4 kept it as an item, despite introducing the Glue Gunner, which fulfilled much the same role. It was later removed from [=BTD5=], and only returned in [=BTD6=], as the Glue Trap.
* BoringButPractical: It's not flashy and doesn't do any direct damage, but it's a great way to slow down the huge rushes of Yellow, Black, and White Bloons in its debut game.
* DemotedToExtra: In [=BTD6=], it's only available as a Power purchasable with Monkey Money or in Geraldo's shop.
* StickySituation: It slows down the first 20 bloons that come into contact with it by gumming them up with glue. {{Exaggerated|Trope}} in [=BTD6=], where it glues up to ''300'' bloons at a time.
* TookALevelInBadass: The Glue Trap glues 15 times as many bloons as the old Monkey Glue, and with [[TechTree Monkey Knowledge]], it even works on [=MOABs=].
[[/folder]]
!!Towers introduced in Bloons Tower Defense 3:
[[folder:Spike-o-pult]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/5e72aaa7_42c9_4d4e_b03a_665b5b2825dc.png]]
'''Class:''' "Primary"[[note]]It only appears in ''[=BTD4=]'' onward as a Dart Monkey upgrade.[[/note]]
A tower which launches spiked balls down the track, able to pop a lot of bloons with a single shot. It's only available as its own tower in ''[=BTD3=]'', as it was turned into an upgrade for the Dart Monkey starting with the fourth game.
----
* DemotedToExtra: Or rather, demoted to upgrade. In ''[=BTD3=]'', it was its own tower, with its own set of upgrades. This didn't last, as in later games, it's turned into an upgrade for the Dart Monkey.
* MultiShot: Can be upgraded to shoot three projectiles at the same time. Or at least that's what it says; in practice, it makes the projectile bigger to make it easier to hit bloons.
* OneHitPolykill: Can pop up to 6 bloons per shot, which can be increased to 20 with the Juggernaut upgrade.
* SpikeBallsOfDoom: Its projectile consists of large, powerful spiked balls that crush bloons in their way.
[[/folder]]
[[folder:Pineapple (Road Item)]]
'''Class:''' None[[note]]It only appears in [=BTD6=] as a Monkey Ace upgrade.[[/note]]
A deployable hazard which lies on the path for 5 seconds before exploding violently.
----
* AwesomeButImpractical: While it sure looks cool, it requires precise timing to even hit targets, and if it does it only takes off one layer, as opposed to the Road Spikes which are far easier to use and take off 11. However, they can be used to deal with Leads if your defense isn't built up enough yet. The Mobile versions of ''[=BTD5=]'' and its spinoffs {{nerf}} the blast radius of the pineapple pretty hard, making it even tougher to hit those random leads in the former and ''Videogame/BloonsMonkeyCity''. Although ''Videogame/BloonsTDBattles'' has no placeable pineapples, the above still applies to the pineapples dropped by the Monkey Ace.
* DemotedToExtra: In ''[=BTD6=]'', it's no longer usable as a road item, and is only available as an upgrade for the Monkey Ace.
* LandMine: Functions as one for Bloons.
* {{Nerf}}: In its debut game, it's able to take off multiple bloon layers if they're close to the center of the explosion. Later games make it so the explosion only does one layer's worth of damage no matter what.
* StuffBlowingUp: [[ExactlyWhatItSaysOnTheTin An explosive pineapple]].
[[/folder]]
[[folder:Monkey Beacon/Monkey Village]]
[[quoteright:333:https://static.tvtropes.org/pmwiki/pub/images/btd6village.png]]
'''Class:''' Support[[note]]As the Monkey Village[[/note]]
A little beacon that boosts the power of all towers within its radius. Its final upgrade lets it activate the [[SmartBomb Super Monkey Storm]].
In ''5'', it became the Monkey Village. Its final upgrades lets it either attack bloons with a powerful laser while decreasing the ability cooldown of all towers in its radius, or massively buff the damage and attack speed of towers while allowing them to damage any bloon type.
In ''6'', its final upgrades cause it to make the 1st and 2nd tier upgrades of all Primary monkeys free while adding a ballista attack of its own [[note]]Primary Expertise[[/note]], make its ability affect ''every'' tower on screen[[note]]Homeland Defense[[/note]], or cause it to absorb all Banana Farms in its range and generate its own income[[note]]Monkeyopolis[[/note]].
----
* ArmorPiercingAttack: The Monkey Intelligence Bureau upgrade grants all towers in range the ability to pop any bloon type with their attacks, even bloons that would normally be immune to them.
* DrumsOfWar: The Jungle Drums upgrade buff nearby towers, making them attack faster.
* EarlyInstallmentWeirdness: In ''3'' and ''4'', it's a rather modern beacon, while in ''5'' and ''6'' it becomes the Monkey Village, depicted as a hut made of straw (in its base form, at least).
* FunWithAcronyms: The M.I.B. upgrade stands for Monkey Intelligence Bureau. Fittingly, the icon in ''6'' is a monkey dressed in black suit and sunglasses, or in other words, a [[TheMenInBlack Monkey in Black]].
* JungleDrums: The appropriately named Jungle Drums upgrade, which fits with the jungle hut appearance of the unupgraded Village. You never hear the actual drums, though, and it functions as a buff to nearby towers.
* MoneyMultiplier: The Monkey Town upgrade lets nearby towers get more cash for each pop. The Monkeyopolis upgrade absorbs all nearby Banana Farms and start generating its own money.
* {{Roboteching}}: Its [[DeadlyDisc Mega Ballista]] attack in ''6'' shoots a projectile that can change directions midway in order to chase bloons.
* SupportPartyMember: Can't attack, but makes other towers in its range more powerful and cheaper. However, each game has a powerful weapon as a final upgrade, starting with a one-shot Super Monkey Storm in 3 and 4, a laser in 5, and a homing DeadlyDisc in 6.
[[/folder]]
!!Towers introduced in Bloons Tower Defense 4:
[[folder:Glue Gunner]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6gluer.png]]
'''Class:''' Primary
A mid-ranged support tower which fires globs of glue at bloons, greatly slowing their movement speed.
Its final upgrades in ''[=BTD5=]'' are Bloon Liquefier, which deals high damage over time to splattered bloons, and Glue Striker, which attacks at a vastly increased rate and can rain glue onto all bloons on-screen.
''[=BTD6=]'' adds a new upgrade path which can affect MOAB-class bloons with MOAB Glue, cause popped bloons to release a stunning splatter with Relentless Glue, and temporarily immobilize affected bloons outright with Super Glue. The previous two paths are also upgraded into The Bloon Solver, which deals tremendous damage over time while leaving behind hazardous glue puddles, and Glue Storm, which also increases the damage taken by bloons hit.
----
* AreaOfEffect: The Glue Splatter upgrade allows his shots to explode, gluing up to 6 bloons (20 in [=BTD4=]) in one hit.
* BalanceBuff: Gained the ability to damage (and, in one upgrade path, slowdown) MOAB-class bloons in [=BTD6=], making it not completely useless in the late-game.
* CripplingOverspecialization: The top path upgrades can melt even the toughest regular bloons in seconds, but are almost helpless against MOAB-class bloons.
* CrutchCharacter: In ''[=BTD4=]'' and ''[=BTD5=]'', Glue Gunners provide effective support against regular bloons for a good price, especially with their Glue Splatter upgrade. However, they can't touch MOAB-class bloons and can't slowdown Ceramic Bloons (though they can damage them), which causes them to become more and more irrelevant as the game progresses. Not the case in ''[=BTD6=]'', however, where each of the paths has something to offer in the late-game.
* DamageIncreasingDebuff: Starting from ''6,'' the Glue Storm ability will cause all bloons on the screen to take increased damage while the ability is active.
* DamageOverTime: The Corrosive Glue and its upgrades pop affected bloons gradually. It starts off slowly, only dealing 1 damage every two seconds (barely enough to overcome the healing of a Regrowth Bloon), but it quickly ramps up until The Bloon Solver can deal 90/60 damage per second to Ceramics and MOAB-Class Bloons.
* DeathFromAbove: Its Glue Striker ability rains glue from above.
* HazmatSuit: Any Glue Gunner with at least one Tier 2 upgrade will have one. Depending on the upgrade path chosen for Tier 3, the headgear will either be a sealed hood and gas mask (Bloon Dissolver and Bloon Liquifier), a balaclava with spectacle goggles (Glue Hose and Glue Strike), or a hazmat helmet with an opaque visor (MOAB Glue and Relentless Glue).
* HollywoodAcid: The Corrosive Glue and its following upgrades (Bloon Dissolver and Bloon Liquefier) can eat through bloons, with the latter two doing so at a ridiculous speed. Fittingly enough, the glue turns green when you get them.
* MagikarpPower: Slowing bloons down is not a particularly useful skill if you can just pop as many as you can. However, upgrading it can enhance the glue to near-instantly melt through regular bloons, cause glued bloons to take more damage, or even heavily slow down MOAB-classes as well.
* {{Nerf}}: In [=BTD4=], the Glue Splatter upgrade let the Glue Gunner coat up to 20 bloons with glue at once. From [=BTD5=] onwards, it was reduced to just 6.
* OvershadowedByAwesome: The Bloon Solver is a very effective upgrade when it comes to melting even Super Ceramics and lesser MOAB-Class Bloons, but it's heavily outclassed by The Biggest One, a tower with a similar purpose, but that can damage a lot more Bloons at once and destroy Super Ceramics faster, leaving a slightly cheaper cost and the slowdown as the only aspects in which The Bloon Solver is better.
* StickySituation: The Glue Gunner's entire purpose is to use sticky glue to slow down enemies.
* SupportPartyMember: Without Corrosive Glue (or MOAB Glue when targeting MOAB-Class bloons), a Glue Gunner can't deal damage and can only use its glue to slow down foes. Even with Bloon Liquefier, it still possesses incredibly weak attack power against MOAB-class bloons.
* YouAreAlreadyDead: Any standard bloon hit by the Bloon Liquifier is as good as dead, it'll just take a while for it to pop. The Bloon Solver does so much damage to ceramic bloons that even [[EliteMooks fortified super ceramics]] in late game rounds won't survive.
[[/folder]]
[[folder:Monkey Ace]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6ace.png]]
'''Class:''' Military
A unique tower that orbits its runway in a set path, firing 8-directional bursts of darts every now and then.
Its final upgrades in ''[=BTD5=]'' are Spectre, which rapidly fires darts and missiles directly at bloons, and Ground Zero, which shoots homing darts and can drop a powerful bomb that massively damages all on-screen bloons.
''[=BTD6=]'' changes up the upgrade paths. The first path, the Fighter Plane, fires more darts and targets MOAB-class bloons with powerful missiles, and gains the Operation: Dart Storm ability that once belonged to the Spectre path, with the final upgrade being the Sky Shredder which fires rings of darts everywhere. The Bomber Ace path drops many small bombs whenever it passes over the track, and gains the Ground Zero ability which can be upgraded to the even bigger Tsar Bomba. The Spectre is moved to the Neva-Miss Targeting path, and has the Flying Fortress final upgrade which triples its already insane firepower.
Its Paragon upgrade is the Goliath Doomship, which rapidly fires both straight and homing missiles in all directions along with a powerful frontal gun, and can coordinate nuclear bombing runs with its ability.
----
* AllYourPowersCombined: Its Paragon, the Goliath Doomship, fires rings of missiles in all directions, salvos of homing anti-MOAB missiles, and two streams of darts from its frontal guns, while also gaining an activated ability that calls in mini-planes to carpet bomb a set path on the map, dealing damage in the ''tens of thousands at minimum'' and stunning non-BAD targets that survive - combining aspects of the Sky Shredder, Tsar Bomba, and Flying Fortress.
* BallisticBone: In ''[=BTD6=]'', an unlockable cosmetic option during Halloween replaces the Ace's darts with sharpened bone fragments.
* CoolPlane: Depending on which upgrades are selected, the appearance can go from the basic biplane to planes that resemble cooler aircraft, including:
** A Supermarine Spitfire for thr Fighter Plane upgrade.
** A De Havilland DH.98 Mosquito for the Ground Zero upgrade.
** An AC-130 Gunship for the Spectre upgrade.
** A B2 Spirit Stealth Bomber for the Operation: Dart Storm upgrade.
** A TU-95 Bear Bomber for the Tsar Bomba upgrade.
** A Kalinin K-7 Bomber for the Flying Fortress and Goliath Doomship upgrades.
** A mix between the American B2 Spirit Stealth Bomber and the Chinese J-20 Wēilóng Stealth Fighter for the Sky Shredder upgrade.
* DeathFromAbove: While the Monkey Ace in general could be placed firmly under this trope, it has the ability to periodically drop Explosive Pineapples with the Pineapple Present upgrade. The Bomber Ace upgrade in ''6'' replaces the pineapples with a more powerful stream of bombs. Then of course, there's the Ground Zero/Tsar Bomba ability, which drops a nuclear bomb.
* DepthPerplexion: The Ace is presumably flying high over the battlefield, and its darts aren't aimed downwards (as they can pass through the bloons without hitting the ground), yet it can pop them despite the fact that the darts should just be passing over its targets.
* EarlyInstallmentWeirdness: In its debut appearance in 4, the Monkey Ace was able to be placed anywhere on the screen, as it didn't have an actual footprint. This made selecting one to upgrade it difficult as you had to click the Ace itself. All further appearances of the Ace require placing down its runway first, limiting the amount of Aces one can have per level, but making managing the Ace much easier.
* FlechetteStorm:
** Operation: Dart Storm and Ground Zero can fire massive storms of darts with each volley. Spectre, however, uses an unyielding, aimed stream of darts and grenades.
** Dart Storm's fifth-tier variant, Sky Shredder. Twice as many darts that fly twice as fast, shoot twice as often, and do over 3 times the damage.
* GrenadeSpam: Spectre spams deadly bombs along with its aimed dart stream. Bomber Ace is no slouch in this department either; position it properly and give it the Rapid Fire upgrade, and it'll carpet-bomb the track around it.
* HomingProjectile: The Neva-Miss Darts upgrade causes its darts to home in on foes.
* MacrossMissileMassacre: The Goliath Doomship replaces the darts it normally fires with lots and lots of missiles.
* MagikarpPower: A Monkey Ace is relatively costly while also being rather weak. Although it fires eight darts at a time with high pierce in its base state, most of its shots will miss due to how it flies around and shoots all around itself, so its damage potential is not very high. However, once you buy higher-tier upgrades, it starts to make up for this weakness via sheer projectile count, darts that follow bloons or are aimed at them, or the powerful ability to drop a huge screen-wiping bomb.
* MechanicallyUnusualClass: Monkey Ace is the first of two moving towers in the series, flying around in a preset path and firing either at set intervals or at the closest bloons.
* MoreDakka: The Spectre upgrade turns the Ace into a rapid fire gunship that launches many bombs and darts towards Bloons. The Flying Fortress gets ''two more'' of these.
* MultiDirectionalBarrage: Fires 8 darts in a ring around it. Lots More Darts upgrades this to 12 and Operation: Dart Storm to 16, before Sky Shredder increases it to ''32''.
* {{Nerf}}: It was given a footprint (in the form of a runway) in ''[=BTD5=]'' to prevent the near-infinite stacking of Monkey Aces that could be performed in the previous game.
* OneHitPolykill: Each of its darts can pop 15 bloons to make up for their generally low hit rate.
* ThereIsNoKillLikeOverkill: Even in a world of over-the-top weapons, Ground Zero still stands out for letting you '''drop a nuclear warhead''' in order to pop a couple balloons.
* YouNukeEm: Ground Zero lets you ''drop a nuke on the bloons''... and the Tsar Bomba upgrade lets you drop an even bigger nuke on them. The Goliath Doomship's ability ''carpet bombs'' the target path with mini-nukes.
[[/folder]]
[[folder:Mortar Tower/Mortar Monkey]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6mortar.png]]
'''Class:''' Military
[[MechanicallyUnusualClass A strange tower which has infinite range and targets a set area with periodic, explosive mortar strikes]]. Its final upgrades in [=BTD5=] are The Big One, which shoots shells with large explosions, and Artillery Battery, which shoots three times as fast with an ability to stun the entire screen.
In [=BTD6=], the top path is relatively unchanged, with the addition of The Biggest One as its final upgrade. The second path focuses on attack speed, resulting in Artillery Battery again, but with some lower upgrades replaced. Those replaced upgrades are the basis for the bottom path, which focuses on debuffs and DamageOverTime, with the final upgrade Blooncineration dealing massive burn damage while leaving behind pools of fire.
----
* DamageOverTime: The Burny Stuff upgrade lets the Bloons it hit be set on fire, dealing minor damage over time. The Blooncineration upgrade as well as the last three top path upgrades greatly increase the amount of damage dealt.
* DeathFromAbove: The Pop and Awe ability calls in a hail of explosives to bombard the entire screen, dealing massive damage and immobilizing everything hit.
* GrenadeSpam: Artillery Batteries triple the fire rate of the Mortar Monkey, barraging the target location with countless shells. Their Bombardment ability momentarily [[MoreDakka quadruples their fire rate]].
* InjuredVulnerability: The Heavy Shells upgrade causes its shells to deal bonus damage against both armored and stunned Bloons, and its final upgrade Pop and Awe significantly boosts its damage against stunned targets in particular. This synergizes with its ability, which stuns every Bloon on the screen.
* MechanicallyUnusualClass: Mortar Towers were the first towers with adjustable aiming, since their reticles can be set to any point on the map for them to launch strikes at.
* NukeEm: The last few upgrades in the top path boast radiation symbols on their cannons, implying their shells are literally nuclear in nature. Fittingly, they forgo other gimmicks like rapid fire or debuffs in favor of massive explosions that deal severe damage in a huge area.
* PlayingWithFire: The Mortar Tower's bottom path allows it to set bloons on fire. The Blooncineration upgrade massively boosts its burn damage and lets its shells leave pools of fire on impact.
* PowerNullifier:
** Signal Flare allows a Mortar Tower to permanently remove camo from bloons hit by its blasts.
** The Shattering Shells upgrade allows the mortar to remove ''all'' special bloon properties off bloons it hits, including the Fortified Property off of bloons up to [=BFBs=]! The Paint Stripper Monkey Knowledge allows this upgrade to also remove camo from [=DDTs=].
** The Blooncineration upgrade allows the Mortar Tower to remove all properties off [=DDTs=].
* ShockwaveStomp: The Shell Shock upgrade causes each shell to release a larger blast wave on impact, dealing additional damage and stunning Bloons too close to the impact site.
* StuffBlowingUp: Specializes in this. It even comes in three distinct flavors, with heavy nuclear shells in the first path, rapid-fire shells in the second path, and crippling incendiary shells in the third path.
* WeaponOfXSlaying: Downplayed with the Artillery Battery and Pop and Awe upgrades. Both upgrades give the Mortar extra damage against [=BADs=] and Boss Bloons, an otherwise exclusive ability to the Paragon towers, with Pop and Awe also giving an extra bonus for all other Artillery Batteries.
[[/folder]]
[[folder:Monkey Apprentice/Wizard Monkey]]
[[quoteright:285:https://static.tvtropes.org/pmwiki/pub/images/btd6wizard.png]]
'''Class:''' Magic
A mid-ranged tower who uses magic blasts. They will gradually learn more spells to add to their attacks as they level up.
Its final upgrades in ''[=BTD5=]'' are Tempest Tornado, which blows bloons back to the entrance, and Summon Phoenix, which summons a fire-breathing bird to roast bloons.
''[=BTD6=]'' renames it to the Wizard Monkey. Though the fire upgrade path remains with a few changes, the air path is gone, being given to the Druid instead. The Archmage path focuses on improving the Wizard's basic magic bolt, increasing its range, speed, and power against [=MOABs=], with the final upgrade adding the Dragon's Breath and Shimmer abilities of the other paths. The Necromancer path allows the Wizard to remove camo from bloons and summon undead bloons that float in reverse and damage enemy bloons on contact, with the tier 5 ability upgrading it to zombie [=MOABs=] and [=BFBs=].
Its Paragon upgrade is the Magus Perfectus, which utilizes a StanceSystem with two modes: one that uses a comparatively weak laser beam that builds up a pool of mana, and one that constantly consumes its mana to fire powerful attacks and summon a Dark Phoenix to decimate Bloons if it has enough mana. It also has two abilities that consume all of its mana to use: Phoenix Explosion ignites all bloons for massive damage while summoning zombie [=ZOMGs=] proportional to the amount of mana consumed, while Arcane Metamorphosis sacrifices the Dark Phoenix to temporarily transform the Magus into a super-powered phoenix form, with the duration scaling with the amount of mana the Magus had at the time of use.
----
* ActionBomb: The Paragon Phoenix can be commanded to explode using the [[ExactlyWhatItSaysOnTheTin Phoenix Explosion ability]], which does massive damage and ignites bloons near the phoenix. Of course, since it's a phoenix, [[BackFromTheDead it comes back]] none the worse for wear.
* AllYourPowersCombined: Its Paragon, the Magus Perfectus, charges up graveyard mana using a draining beam and uses it to power Arcane Spikes and a Dark Phoenix to decimate the bloons and resurrect them as minions. It can also consume it all to ignite all bloons and resurrect an army of zombie [=ZOMGs=], or consume its mana and Phoenix to enter a Phoenix SuperMode that uses jets of flame that leave walls of fire. This skillset combines all of the best aspects of the Archmage, Wizard Lord Phoenix, and Prince of Darkness.
* TheArchmage: Becomes one with its final top path upgrade in ''[=BTD6=]''. It's such an expert in magic that it can cast [[AllYourPowersCombined Shimmer and Dragon's Breath]] despite the fact they can't be purchased alongside the Archmage upgrade path.
* BlowYouAway: The Air path in ''[=BTD5=]'' can summon a tornado to blow away bloons.
* BoringButPractical: In [=BTD6=], the top path focuses on improving its basic attack without adding new ones. Certainly not as flashy compared to summoning undead bloons or phoenixes to fight for you, but a top path monkey wizard is a solid general option against anything that isn't a purple bloon.
* CastingAShadow: In ''[=BTD6=]'', the bottom path focuses on dark magic, spreading a dark aura that removes camo property and summoning undead Bloons.
* CoolChair: The Prince of Darkness, the third path tier 5 Wizard, is depicted as sitting on a throne. He doesn't even turn when shooting at Bloons.
* DarkIsNotEvil: The Necromancer path Wizards dabble with necromancy, look imposing, and wear dark clothings. However, they're still fighting alongside other monkeys.
* DecompositeCharacter: The Wizard Monkey from ''[=BTD6=]'' kept the second path upgrades from the Monkey Apprentice from the previous game, whereas the top path upgrades went to the Druid instead.
* DifficultButAwesome: The Magus Perfectus is a very hands-on Paragon, and demands careful management of its StanceSystem and ManaMeter to maintain the effectiveness of its attacks, as well as timing when to consume all the mana to use one of its abilities while accounting for the period of relative weakness after. However, with sufficient micro, the Magus can become a powerhouse even by Paragon standards, and has multiple ways to totally eradicate even the toughest foes.
* DoNotTouchTheFunnelCloud: The 3/x and 4/x upgrades in ''[=BTD5=]'' allow the wizard to launch tornadoes to blow back and even pop bloons. Said tornadoes only affect bloons they touch.
* GatheringSteam: How the Necromancer path works. When nearby Bloons are popped, the Necromancers store them in their "graveyard". Summoning undead Bloons remove them from this graveyard. This means they generally need to pop Bloons with their other attacks (or have nearby allies that can pop Bloons) before they can start summoning undead Bloons. Once they do, however, the undead army can usually pop enough Bloons to keep the graveyard full by themselves.
* GirlsWithMoustaches: According to [[https://www.reddit.com/r/NinjaKiwiOfficial/comments/17mgtnb/whats_up_at_ninja_kiwi_3rd_november_2023/ this]] blog by Ninja Kiwi, all Wizard Monkeys can grow beards regardless of gender since said beards can be created with magic.
* HotWings: Summon Phoenix conjures up a massive [[BreathWeapon fire-breathing]] phoenix that circles the screen for 20 seconds, doing heavy damage to whatever it hits. ''[=BTD6=]'' lets the Wizard himself transform into a much more powerful Lava Phoenix, which, in addition to stronger fire breath, also shoots highly damaging meteors; the standard phoenix will also permanently stick around when the Wizard Lord Phoenix upgrade is purchased.
* LightningWindJuxtaposition: In ''BTD 4'' and ''5'', one of his upgrades allows him to summon tornadoes and the next level upgrade electrifies the tornadoes he summons. In ''BTD 5'', he also has an upgrade allowing him to shoot lightning bolts before the tornado upgrade.
* MagmaMan: The Wizard Lord Phoenix's eponymous transformation appears to have a body made of lava, as seen on its tail.
* MasterOfAll: The Archmage can use abilities from all three crosspaths (Arcane Spikes, Dragon's Breath and Shimmer) when that's normally not possible.
* {{Necromancer}}: The final bottom-path upgrades on [=BTD6=] allow Wizard Monkeys to summon undead bloons to damage any living bloon on their path. With the Prince of Darkness upgrade, it can summon undead blimps (up to [=BFBs=]) as well. Magus Perfectus improves on this to summon undead [=ZOMGs=].
* {{Nerf}}: In ''[=BTD6=]'', the Wizard Monkey's starting attacking type was changed from plasma to energy, meaning it cannot pop Lead bloons unless supported by other towers or upgraded.
* PlayingWithFire: One upgrade path focuses on fire magic. It can shoot fireballs, spray a stream of flames, and summon a phoenix.
* TheRedMage: Archmage's ability to cast powerful arcane bolts, Dragon's Breath, and Shimmer at the same time embodies this, since otherwise these abilities are otherwise on mutually exclusive paths. The same applies to Magus Perfectus.
* ShockAndAwe: One upgrade in ''[=BTD5=]'' fires a bolt of electricity which arcs between bloons.
* SimpleYetAwesome: The first upgrade path in ''[=BTD6=]'' simply focuses on enhancing the basic magic bolt, to devastating effect.
* WizardClassic: The top path upgrades in ''6'' gives the Wizard Monkey a pointy hat, a long robe, a magical staff, and a long white beard.
[[/folder]]
[[folder:Monkey Buccaneer]]
[[quoteright:349:https://static.tvtropes.org/pmwiki/pub/images/btd6buccaneer.png]]
'''Class:''' Military
A long-ranged tower that can only be placed on water, and targets bloons with rapid, heavy darts.
Its final upgrades in ''[=BTD5=]'' are Aircraft Carrier, which sends out miniature Monkey Aces that shoot and spray darts while flying, and Monkey Pirates, who have an independently firing cannon on their ship and can instantly take down the strongest bloon on-screen.
In ''[=BTD6=]'', the Monkey Buccaneer can fire simultaneously from both sides of the ship. In addition to keeping and improving the previous two paths with the Carrier Flagship and Pirate Lord, it also adds the Merchantman upgrade path, which focuses on income generation by making extra money at the end of each round.
Its Paragon upgrade is the Navarch of the Seas, which unleashes curtains of gunfire while commanding three fighter jets to bombard bloons with missiles, and can automatically hook any non-BAD blimps that enter the screen for an instant kill, or manually hook ''any non-boss target'' up to twice per round. It also retains its income generation and buff to water monkeys and Aces, notably being able to buff the attack speed of the Goliath Doomship.
----
* AllYourPowersCombined: Its Paragon, the Navarch of the Seas, rapidly fires upgraded darts and bombs from its six cannons, releases 3 planes to attack the Bloons with streams of darts and anti-MOAB missiles, constantly [[OneHitKill hooks in and instakills]] all MOAB-Class Bloons (up to [=ZOMG=]s) that appear on-screen, gains an activated ability that is able to hook in any (''yes, ANY'') MOAB-Class Bloon, generates tons of money after every round, buffs all Monkey Aces and water towers and allows you to place down two other towers on its upper decks - combining all of the best aspects of the Carrier Flagship, Pirate Lord and Trade Empire.
* CoolBoat: Its final upgrades, especially the aircraft carrier. In [=BTD6=], the Carrier Flagship upgrade is so big that you can actually put two smaller towers on top of it.
* DressedToPlunder: As a base tower, it wears the classic bicorne hat, but going into the Cannon Ship path gives it more pirate gear like an EyepatchOfPower and HookHand, and even a golden tooth!
* EdibleAmmunition: The Grape Shot upgrade lets the buccaneer shoots sharpened grapes. It can also be upgraded to Hot Shot, which sets the grapes on fire.
* GrenadeSpam: Cannon Ships can fire cannonballs much faster than you'd expect. It gets even more outlandish with its upgrades, as the Pirates and Pirate Lord can be rapidly firing up to six cannonballs at a time without slowing down.
* IntrepidMerchant: The aptly-named Merchantman path introduced in 6 allows Buccaneers to double as end-of-round money generators.
* TheMinionMaster: The Aircraft Carrier upgrade gives the ship three mini-aircraft that can travel anywhere in the map and shoot at Bloons.
* MoneyMultiplier: The Merchantman path in ''[=BTD6=]'' sacrifices firepower in exchange for granting bonus money at the end of each round.
* NecessaryDrawback: The Monkey Buccaneer is both strong and cost-effective, but is balanced out by being one of two towers that can't be placed on land.
* {{Nerf}}: Due to the reordering of the various upgrades, in [=BTD6=], you cannot have a Destroyer[[note]]Massive speed increase[[/note]] with Grape Shot[[note]]Allows hitting of multiple bloons at once[[/note]] and Crow's Nest[[note]]Allows the buccaneer to hit camo bloons[[/note]].
* OneHitKill: The Monkey Pirates have the MOAB Takedown ability, which instantly takes down the strongest bloon on the map, excluding [=ZOMGs=] (and unlike similar abilities that instantly destroy MOAB-Class bloons, this one does not leave any child bloons on the track). It can be further improved with the Pirate Lord to target up to three [=MOABs=] (or a ZOMG plus a MOAB, BFB or DDT) and grants extra money for each one. The Navarch of the Seas Paragon upgrade takes it even further with its manually activated harpoon as it can take down a BAD from full health in a single hit (the only other tower that could do this at the time, the Legend of the Night, specifically requires the BAD to be about to leak) albeit only twice per round, while it has secondary harpoons that work exactly like the Pirate Lord upgrade (except they are used automatically).
* ThePiratesWhoDontDoAnything: The Monkey Pirates don't really do anything pirate-y other than gaining the ability to plunder [=MOABs=].
* {{Privateer}}: The basic Buccaneer before going down any specific path resembles a pirate, but wasn't specifically identified as such. It's only after going down the Pirate path do they get called that.
* SpreadShot: The Grape Shot upgrade lets the Buccaneer shoot grapes in a fan-shaped spread.
* SupportPartyMember: The Carrier Flagship passively buffs the attack speed of all aquatic towers and Monkey Aces.
[[/folder]]
[[folder:Banana Farm]]
[[quoteright:326:https://static.tvtropes.org/pmwiki/pub/images/btd6farm.png]]
'''Class:''' Support
A special tower which does not attack, but instead produces bananas that can be collected for cash.
Its first upgrade path in ''[=BTD5=]'' focuses on increasing money earned by picking up bananas with the Banana Republic and Banana Research Facility upgrades. The second path turns the farm into a Monkey Bank, removing the need to manually pick up every banana and adding interest to the cash stored inside.
''[=BTD6=]'' grants the Monkey Bank path the ability to take out a $10,000 loan which must be repaid, and can be upgraded to Monkey-nomics which simply gives you the money rather than lending it. It also adds the Marketplace path, which removes the need to pick up bananas yourself and provides support buffs to Merchantmen Buccaneers, and can be upgraded to Monkey Wall Street which generates tons of money and lives and auto-collects bananas from other farms nearby.
----
* BoringButPractical:
** Does absolutely no damage, but is vital to most strategies since it allows you to afford more upgrades for your other towers.
** The third path upgrades in ''[=BTD6=]'' don't generate as much money per round like the first path, nor allows you to get a massive instant cash injection as in the second, but they give consistent amounts of money, don't require any kind of player intervention to collect the money (the first path needs manual collection or Monkey Farmers before the bananas expire, and the second path does not give you the money until you collect it), and can boost the income of the similarly reliable Merchantmen.
* EarlyInstallmentWeirdness: In ''[=BTD4=]'', Banana Farms did not actually produce bananas during the round, and instead merely gave you money at the end of it. The next game would give the Banana Farm the ability to throw bananas into the battlefield (and making you pick them up), with the "money at the end of the round" ability only returning in ''[=BTD6=]'' for the Banana Farm's final Path 3 upgrade, Monkey Wall Street, as well as the Monkey Buccaneer's main Path 3 upgrades.
* HealingFactor: Banana Farms in 5 and 6 gain the ability to restore lives; however this feature is locked behind a Premium upgrade in the former, and a Monkey Knowledge in the latter. Monkey Wall Street on the other hand always generates lives after every round.
* MoneyMultiplier: The purest example in the game, as it does nothing except give you money. All its upgrades are just different flavors of making more money, from raw income generation, to interest-based money storage. The Central Market and Banana Central, more literally, increase the income generated by other towers (Banana Research Facilites and Merchantmen/Trade Empire, respectively), and a Banana Farm's presence within range increases the money generated by a Jungle's Bounty druid.
* SupportPartyMember: The only tower with no offensive capabilities whatsoever. Makes up for it in cash gain.
** The bottom-path farm in ''6'' is more focused on this, weirdly enough. The third tier, Marketplace, removes the "collect bananas" mechanic entirely, instead directly increasing your money count with each tick[[note]]This makes marketplaces a simple "set it and forget it" way to gain income while you focus on other towers[[/note]]. Central Market ups the income, and also increases the value generated by Merchantmen Monkey Buccaneers; a useful addition to the Trade Empire. Lastly, Monkey Wall Street gains the ability to automatically collect bananas and crates ''for you'', making them a great companion to top-path farms, Supply Drop snipers and Support Chinooks, and even Bloon Trap engineers.
* UselessUsefulSpell: Until ''[=BTD6=]'''s Version 2.0 patch, it was possible to place Banana Farms in C.H.I.M.P.S. mode, even though income generation is disabled and thus made Banana Farms completely useless. It's still possible to do so in Challenge Editor if one chooses to.
[[/folder]]
[[folder:Dartling Gunner]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/000_dartlinggunner_28temporary29.png]]
'''Class:''' Military
A unique, infinite-range tower which fires towards your cursor location. Fires extremely quickly but inaccurately. Also hits camo bloons by default in ''4'' and ''5''.
In ''[=BTD4=]'', it can be upgraded to fire laser blasts. ''5'' adds the Ray of Doom, a devastating WaveMotionGun, while the second path has Hydra Rocket Pods, which replaces the darts with small missiles, and the Bloon Area Denial System, which now fires three rockets at a time and grants the Rocket Storm ability, which can shoot up to 100 missiles at once.
''[=BTD6=]'' keeps similar upgrade paths, also adding the M.A.D. ([[FunWithAcronyms MOAB Assured Destroyer]]) after the Rocket Storm upgrade, which reduces the Dartling Gunner's rate of fire in exchange for launching huge missiles that do devastating damage to MOAB-class bloons. In addition to the laser and rocket paths, ''[=BTD6=]'' also has a new upgrade path, which makes the Dartling shoot slower and reduces its range, but now shoots bursts of highly damaging buckshot, with the Bloon Area Denial System and Bloon Exclusion Zone granting it several barrels that can be set to automatically target nearby bloons like a regular tower.
----
* AntiFrustrationFeatures: In ''[=BTD5=]'', there's a specialist building that adds the option to have the Dartling Gunner constantly shoot towards one fixed point, in case you don't want to be manually aiming the thing all the time. It comes with the tower in ''6''. If you have a specific Monkey Knowledge perk, it even provides an activated ability that instantly unlocks all locked Dartling Guns in case of an emergency, even providing a swivel speed bonus in the process.
* CoolChair: In ''[=BTD6=]'', the Ray of Doom takes the form of a seat with an attached WaveMotionGun, so the monkey gunner can sit back in style while vaporizing swathes of bloons.
* CripplingOverspecialization: The M.A.D upgrade is, as the full name implies, extremely effective at popping MOAB-class Bloons, with the M.A.D. being one of the few towers that can easily take down a BAD and its MOAB-class spawn all by itself. However, its slow attack rate actually makes it ''worse'' at dealing with Ceramics and below than the previous upgrades, with even weak bloons being liable to slip through it. The Ray of Doom has the reverse problem: while it easily vaporizes any amount of [=BFBs=] and below, it has a relatively low single target damage for its price, and can struggle popping [=Z.O.M.Gs=] and especially the [=BAD=].
* DiscardAndDraw: The high tier upgrades in ''6'' tend to play around with the base concept of the Dartling Gun.
** The Plasma Accelerator is very strong, but the laser will stop where your cursor is instead of going on infinitely. This means you need more micromanagement to use it well. Additionally, it no longer ignores obstacles, meaning that vision blockers will stop the beam dead in its tracks.
** The M.A.D. deals humongous damage to MOAB-class bloons, but also ''significantly'' reduces its attack speed. It actually performs worse against regular Bloons than the preceding upgrades.
** The buckshot path in general discards the Dartling's infinite range and fast attack speed for high damage bursts. The fourth and fifth tier upgrades also lets the Dartling automatically target Bloons, making it more similar to a regular tower.
* {{Expy}}: The Bloon Area Denial System and Bloon Exclusive Zone ''[=BTD6=]'' are based on the Vickers turret's upgrade chain in ''SAS Zombie Assault TD'', most notably the Area Denial Weapons System and Zeus Exclusion Zone, from whom it gets its names from. Similar to the latter Zeus Exclusion Zone, the BADS and BEZ have multiple independent turrets that can aim at separate targets or focus on a single one.
* FunWithAcronyms:
** Bloon Area Denial System, or B.A.D.S. for short.
** ''6'' adds the M.A.D. upgrade, short for MOAB Assured Destroyer.
* GatlingGood: If you don't go for its first upgrade path, which turns it into a WaveMotionGun. It eventually upgrades to fire ''rockets'' at a Gatling gun rate.
* GuideDangIt: In BTD 6, the Dartling Gunner has the exact same problem as the Super Monkey - its shots ''look'' just like the earlier-unlocked Dart Monkey's, and they're both just referred to as "darts" by the game.
** However, just like the Super Monkey, each individual dart shot by the Dartling Gun only pops a ''single'' Bloon before disappearing, unlike the Dart Monkey's OneHitPolykill abilities.
** This, again, makes it much less able to handle crowds of massed Bloons than it initially appears - though its initial performance ''is'' proportionate to its price, and when you're ''expected'' to get it, so it's not a ''weak'' tower - just a bit counterintuitive.
* HumongousMecha: The M.A.D upgrade replaces the gun with a large robot that shoots giant rockets out of its arms. [[{{Irony}} It's still the shortest of the tier 5 Dartling upgrades]].
* InNameOnly: The Bloon Area Denial System upgrade in ''6'' is vastly different than in ''5''. In ''5'', it's an upgrade that makes the Dartling shoots 3 rockets with every attack and has the Rocket Storm ability. In ''6'', the Rocket Storm is now its own upgrade. Meanwhile the Bloon Area Denial System is now an upgrade for the newly added Buckshot path, appearing as a tower with 4 independently-attacking cannons.
* {{Irony}}: The Faster Barrel Spin upgrade in ''6'' is on the same path as the M.A.D which fires significantly slower than a regular Dartling Gunner.
* MacrossMissileMassacre: The B.A.D.S. in ''5'' fires a spread of 3 rockets at a very high rate and has the Rocket Storm ability, which fires 5 volleys of up to 100 rockets each at the nearest bloons onscreen. In ''6'', the Rocket Storm comes back as the 4th upgrade of the middle path and is upgraded into much larger missiles by the M.A.D. The actual volume of rockets is less impressive at first, but then you realize it [[https://www.reddit.com/r/btd6/comments/k6f636/in_case_you_havent_tried_already_attack_speed/ scales with attack speed buffs]], which can massively improve the missile volume.
* MechanicallyUnusualClass: The Dartling Gunner is one of the few towers that has to be aimed manually. However, the Bloon Area Denial System upgrade in ''[=BTD6=]'' can be set to act more like a normal tower, automatically targetting nearby bloons.
* MoreDakka: Its fire rate is initially high, but not overwhelming. However, it definitely qualifies for this trope once it upgrades to Faster Barrel Spin.
* {{Nerf}}: In [=BTD6=], the Dartling Gunner cannot hit camo without Advanced Targeting or external camo support.
* ShortRangeShotgun: The Buckshot upgrade has the side-effect of getting rid of the Dartling Gun's infinite range ability. On the other hand, it's short-ranged burst deals massive damage.
* ShotgunsAreJustBetter: The Buckshot path introduced in ''6'' converts the Dartling Gun from a rapid-fire minigun to a slow-firing but potent scattergun. Upgrading it further ramps up the fun by adding ''three more guns'' with the Bloon Area Denial System, and the Bloon Exclusion Zone gets even more guns!
* SlowLaser: The Laser Cannon upgrade makes the dartling shoots laser projectiles instead of darts. It still takes time for the lasers to move and hit the bloons. Averted with the Plasma Accelerator and the Ray of Doom, which are constant streams of lasers.
* SpreadShot: The buckshot upgrade in ''6'' shoots bursts of round pellets in a conical spread.
* WaveMotionGun: The Ray of Doom fires a beam that is long enough to extend across the map and has practically {{infinite}} popping power, making it very effective against large groups of bloons.
[[/folder]]
[[folder:Spike Factory]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6sf.png]]
'''Class:''' Support
A tower which periodically deploys slightly weaker road spikes in a small area around it. The spikes can hit camo bloons by default.
Its upgrade paths in ''[=BTD5=]'' are Spiked Balls, which creates powerful spiked balls that deal extra damage against ceramic and can be upgraded to explosive Spiked Mines, and Spike Storm, which can periodically cover the whole track in road spikes.
''[=BTD6=]'' adds a third path, which increases the power and lifespan of the spikes, making them nearly permanent.
----
* BoringButPractical: All the Spike Factory does is place road spikes on the track. On the other hand, it's a very effective way to prevent losing lives through bloons that leak through your defenses, while also providing camo countermeasures and, depending on the purchased upgrades, extra damage against Ceramics or MOAB-class bloons, or incredibly powerful mines that can destroy almost anything.
* MagikarpPower: The bottom path's upgrades are mostly weak, focusing on utility and spike lifespan instead of directly increasing its power. However, reaching the capstone upgrade, Perma-Spike, transforms it into one of the strongest towers in the game, giving it extraordinarily powerful spikes that can persist between rounds and stack up to an absurd degree as a result. It's one of the few towers that can effectively solo a BAD.
* MightyGlacier: The Super Mines upgrade greatly reduces the Spike Factory's fire rate, but it deploys very powerful mines that can destroy the outer layer of a MOAB or DDT in one hit.
* SpikesOfDoom: [[CaptainObvious But of course]]. It drops piles of tacks, which can be upgraded to explosive spiked balls or police-style caltrops that devastate bloons that pass over it.
* StoneWall: With an emphasis on the "wall." Spike Factories don't have much range, and the actual area of their damage is very small and concentrated. High tier spike factories like the Super Mines and Perma-Spike even have a dramatically-reduced attack speed to compensate for their heavy ordnance. That said, the mechanics behind spikes means that the damage they deal is ''tremendous'', bringing any bloon that collides with their spikes to a screeching halt. Spike Factories are ''the'' strongest defensive tower, bar none.
* StuffBlowingUp: Spiked Mines and Super Mines blow up when they run out of spikes.
* SpamAttack: The second path upgrades in ''5'' and ''6'' make the Spike Factory shoot out spikes at increasing speeds. Faster Production and ''Even Faster'' Production are obvious, Spike Storm produces a massive amount of spikes to cover the whole track, and Carpet of Spikes regularly sets down ''entire Spike Storms''.
* TrapMaster: A mechanical version of this trope; it lays SpikesOfDoom on the track to pop bloons that slip through your main defense, but generally becomes of little use once bloons get past it. Upgrades can allow it to become a primary part of your defense instead of just cleanup.
[[/folder]]
[[folder:Beekeeper]]
'''Class:''' Special Agent
A tower that summons bees that stick to Bloons, stinging them repeatedly until the Bloon is eliminated. First appeared in ''[=BTD5=]'' as a Special Agent, but was later added to ''[=BTD4 Mobile=]'' as a regular tower. Doesn't appear in ''[=BTD6=]''.
----
* AscendedExtra: It was merely an Agent in ''[=BTD5=]'', but became a full tower in ''[=BTD4 Mobile=]''.
* BearsAreBadNews: The only tower that is operated by an animal other than a monkey, instead being a bear holding a beehive.
* BeeBeeGun: Uses bees to attack.
* CallForward: It was added to the mobile version of ''[=BTD4=]'' after it was added to ''[=BTD5=]''.
* PutOnABus: Does not appear in ''[=BTD6=]'', neither as a tower nor an agent.
* WeaksauceWeakness: Has no way to pop frozen, lead, or MOAB-class bloons.
[[/folder]]
!!Towers introduced in Bloons Tower Defense 5/Battles
[[folder:Sniper Monkey]]
[[quoteright:333:https://static.tvtropes.org/pmwiki/pub/images/btd6sniper.png]]
'''Class:''' Military
A tower that slowly fires powerful shots that pop 2 layers of bloon on hit, and has unlimited range.
Its final upgrades in ''[=BTD5=]'' are Cripple MOAB, which stuns MOAB-class bloons when they are shot, and Supply Drop, which grants extra money when used.
''[=BTD6=]'' keeps the Cripple MOAB and Supply Drop upgrades, adding the Shrapnel Shot and Bouncing Bullet upgrades to the latter which allow the Sniper to hit multiple bloons with one shot, and the Elite Sniper which drops much more valuable cash crates and gives other Snipers the Elite targeting priority. The Semi-Automatic upgrade from ''5'' is moved to the bottom path which gradually increases the Sniper's firing speed to ridiculous levels, ending with the Elite Defender which mows down anything in its line of sight and can shoot ''even'' faster if a bloon leaks.
----
* AlwaysAccurateAttack: One of the few {{hitscan}} attackers in the series. Thus, if it can see a bloon, it'll hit it.
* ArtificialBrilliance: Invoked by the Elite targeting option granted by the Tier 5 Elite Sniper. When a Sniper is set to Elite targeting, it'll initially target the strongest enemies to maximize their damage, but will switch to targeting the first enemy if it sees that the bloons are getting far enough down the track. It also causes them to prioritize Ceramics over other bloon types in most situations.
* DamageIncreasingDebuff: In ''6'', the Cripple MOAB upgrade also causes the Sniper's attacks to debuff MOAB-class bloons it hits, briefly increasing their damage taken.
* DesperationAttack: The Elite Defender gains increased fire rate the closer a bloon is to the exit. Actually leaking a bloon will temporarily quadruple its already insane fire rate.
* ImprobableAimingSkills: No matter the distance, the Sniper Monkey will [[AlwaysAccurateAttack never miss]]. Even if it's using a fully automatic rifle that puts out over a dozen rounds per second, every single one of these bullets ''will'' end up in a Bloon. There's no aiming or reload time, either: as soon as the Sniper's target is destroyed, it will immediately snap to the next Bloon and keep firing without breaking its rhythm.
* MightyGlacier: Sniper Monkeys have a sluggish attack rate unless they get speed upgrades, but they deal multi-layer damage from the start and can get upgrades to increase their damage further. The top path in particular is entirely focused on buffing the Sniper's effectiveness per hit, to the point where it eventually becomes able to annihilate any regular bloon in a single shot and deal tons of damage to blimps.
* MobileShrubbery: The artwork for Cripple MOAB in both ''5'' and ''6'' depict the sniper wearing a ghillie suit, perfect for hiding in bushes.
* MoneyMultiplier: The Supply Drop ability calls in a Dart Storm-like plane that drops a crate containing between $1,200 in cash. This is the only ability in ''[=BTD5=]'' Flash to start on cooldown when placed. The Elite Sniper upgrade in ''[=BTD6=]'' increases the amount of money that the crate contains alongside its other benefits.
* MoreDakka: In [=BTD6=], the third upgrade path focuses on attack speed. Somehow, the monkey is still able to make long range, high-precision shots even when using a fully automatic rifle.
* PinballProjectile: The Bouncing Bullet upgrade allows the sniper's bullets to bounce to other targets after hitting the first.
* SniperRifle: The Sniper's weapon of choice. It lets the Sniper shoot anywhere on the map, except those blocked by obstacles.
* SupportPartyMember: Unless you invest in the Sniper's bottom path, its skills won't be too terribly effective at raw DPS, but its crowd control abilities (in the top path) and money-making abilities (in the middle path) make up for this. The Tier 5 upgrades of those respective paths are even more directly support-oriented, as Cripple MOAB adds a DamageIncreasingDebuff to any MOAB it hits (even the BAD or bosses!), while Elite Sniper grants increased fire rate and the [[SecretArt Elite targeting priority]] to all other Snipers.
[[/folder]]
[[folder:Ninja Monkey]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6ninja.png]]
'''Class:''' Magic
A relatively fast tower that can naturally see Camo bloons, throwing shurikens with 2 pierce each.
Its final upgrades are Bloonjitsu, which throws five shurikens at the same time, and Sabotage Supply Lines, which slows bloons. [=BTD6=] adds the Grandmaster Ninja and Grand Saboteur as final upgrades to the original two paths, and adds a third upgrade path who specializes in using Sticky Bombs to deal massive delayed damage to MOAB-class bloons.
Its Paragon upgrade is the Ascended Shadow, which provides global camo detection and massive damage against them, can rapidly throw extremely potent shurikens and splitting flash bombs, use devastating sticky bombs against MOAB-class bloons, and has a global Sabotage aura that slows down everything on the screen outside of [=BADs=] and Bosses, while crippling the durability of all non-Boss blimps.
----
* AllYourPowersCombined: The Ninja Monkey Paragon, the Ascended Shadow, hurls seven huge homing shurikens at a time and tosses out a spread of flash bombs every seven throws. These bombs explode into three smaller seeking shurikens each. It also applies a permanent speed reduction to all Bloons short of B.A.D.s or Boss Bloons, reduces the HP of ''all'' non-boss blimps that spawn, and throws card-shaped {{Sticky Bomb}}s at MOAB-Class Bloons (with said bombs doing more damage than ''First Strike Capability''). Finally, it gives all towers permanent camo detection and can hit camouflaged bloons for even greater damage. This power set combines features from the Grandmaster Ninja, Grand Saboteur, and Master Bomber.
* {{Caltrops}}: In ''6'', the Ninja can throw caltrops on the track, which pops any Bloons touching them.
* CoolMask: The Sticky Bomb and Master Bomber upgrades give the Ninja a cool-looking mask depicting an oriental demon.
* GratuitousNinja: Then again the devs ''are'' called Ninja Kiwi.
* MultiShot: Can be upgraded with Double Shot, Bloonjitsu (5 shuriken), and Grandmaster Ninja (8 shuriken) [[SimpleYetAwesome for vastly increased popping power]].
* {{Nerf}}: Due to how its upgrades were redistributed in [=BTD6=], Ninja Monkeys can no longer have Ninja Discipline, Distraction and Seeking Shuriken at the same time.
* PercentDamageAttack: While the Grand Saboteur's ability is active, all new blimps will spawn with only 75% of their original HP, which can get ridiculous when you factor in freeplay scaling. The Ascended Shadow can apply this effect permanently.
* SimpleYetAwesome:
** The Bloon Sabotage ability. It's not flashy, it doesn't wipe out bloons with a firework show, and it didn't even have an animation in 5. That said, Sabo's ability to reduce the movespeed of all bloons on screen by ''half'' is widely considered to be one of the strongest activated abilities in the game, making it invaluable support in late rounds.
** The Ninja Monkey overall counts as such. Despite merely throwing a single shuriken at a time, it's the only non-Hero tower that can directly target Camo Bloons when not upgraded, and packs decent attack speed for a somewhat low cost. Its higher upgrades on the top path just increase the amount of shurikens it throws each time, but are still highly effective.
* StealthExpert: Being a TowerDefense game, there isn't any need for the monkeys to actually hide. That said, the Ninja's stealth aspect is represented in it being capable of seeing [[StealthyMook Camo Bloons]] without any upgrades. In ''6,'' it can take it a step further by outright stripping Camo from struck bloons with Counter-Espionage, while the Paragon Ascended Shadow can turn your ''entire army'' into these while also gaining the ability to hit camos for even more severe damage, making it especially effective against [[DemonicSpiders DDTs]].
* StickyBomb: The third path in [=BTD6=] grants the ninja the ability to throw these, allowing it to destroy MOAB-class bloons with ease.
* StockNinjaWeaponry: The Ninja's basic attack is throwing shurikens, it can set up caltrops, and also throw flash bombs.
* SupportPartyMember: The second path in [=BTD6=] sacrifices the Ninja's offensive potential in order to provide knockback, camo removal, increased attack speed for nearby Ninjas, or speed and health reduction of incoming bloons.
* TechnicolorNinja: Unupgraded, it wears bright red ninja clothing. While there are some upgrades that turn the clothes black, they don't last long as further upgrades turn them colorful again.
* TrickBomb: Its third upgrade path in ''6'' focuses on various bombs. The first one is a flash bomb that briefly stuns any Bloons it hits, and the latter is a StickyBomb that deal massive damage to MOAB-class bloons.
* TrueSight: It's the only non-Hero tower that can attack Camo Bloons without any upgrades[[note]]Although Spike Factories can also damage them if they come across its spikes[[/note]].
[[/folder]]
[[folder:Monkey Engineer]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/000_engineermonkey.png]]
'''Class:''' Support
A monkey who wields a fast-firing nailgun that pops 3 bloons per shot. Its upgrades let it construct various devices to help in popping Bloons.
Its final upgrades in ''[=BTD5=]'' are Bloon Trap, which lets the Engineer lay down a trap that converts passing Bloons into cash, and Overclock, which can greatly boost one tower's attack speed for a period of time.
In ''[=BTD6=]'', the Engineer's top path focuses on building sentries. Sentry Expert lets it build many different sentry types, while Sentry Champion, its final upgrade, replaces these with powerful turrets that rapidly fire plasma bolts before violently exploding. Its second path grants it the Overclock ability, which hugely boosts a tower's attack speed; this can further be upgraded to Ultraboost, which leaves the affected tower with a small permanent boost which stacks up to 10 times. Finally, the third path has the Engineer wield two guns for doubled attack speed, as well as a Bloon Trap which can grant extra money from popped bloons, and can be upgraded to the XXXL Trap, capable of holding up to a ZOMG.
Its Paragon upgrade is the Master Builder, which can deploy three devastating Mega Sentries that each use their own methods of attack and create their own unstable plasma sentries, on top of being able to self-destruct for tremendous damage. The Master Builder itself also gains three powerful nail guns that can pin down anything below a BAD, and can Overclock itself each round to give itself a permanent stacking attack speed buff.
----
* AllYourPowersCombined: {{Subverted}}. While the Master Builder is formed as a fusion of the Sentry Champion, Ultraboost, and XXXL Trap, it functions much more like a powered-up version of Sentry Champion, and [[PowerUpLetDown doesn't have the Cleansing Foam, Overclock, or Bloon Trap abilities available]]. The only remnants of the other paths are its ability to buff itself in a manner similar to Overclock, and its ability to Pin targets with multiple nail guns.
* TheEngineer: Well, duh. While it can shoot at Bloons with its nail gun, its main power is to set up various contraptions like sentries and traps to help against the Bloons.
* GatheringSteam: The Master Builder's attack speed increases slightly every round it's deployed, up to a limit. By the time it actually hits this limit, however, its 3 guns will be attacking together for a total hit rate of about ''60 times per second.''
* GunsAkimbo: One upgrade in ''[=BTD6=]'' makes it dual-wield its nail guns, doubling its attack speed.
* MadeOfExplodium: The last upgrade on the top path in [=BTD6=] has the engineer shoot out plasma spewing sentries that violently explode when their time is up. A particularly effective strategy is weaponizing this by manually selling the sentries when enemies draw near, turning them into on-demand bombs.
* MiniMecha: The Master Builder, the Paragon for the Engineer, is a robot suit several times the controlling Engineer's size.
* MoneyMultiplier: Manually emptying the Bloon Trap gives twice as much money as usual for the bloons it captured. However, if you're too slow to react, it will empty automatically and give only the normal amount.
* MoreDakka: The Overclock ability doubles the attack speed of a single selected tower for an entire minute, but only has a 45-second cooldown! In ''6'', its tier 5 upgrade, Ultraboost, does not only the above, but also grants a small ''permanent'' speed boost after the Overclock boost is used up. This stacks up to 10 times, effectively letting a single tower have the Overclock effect ''passively''. And then you add the ''actual'' Overclock buff to it.
* NailEm: The Monkey Engineer's primary weapon is its trusty nailgun. Unupgraded sentries also fire nails as projectiles.
* PowerNullifier: With the Cleansing Foam upgrade, it can spray foam onto the field that removes camo and regen properties from bloons, and also pops leads.
* PurpleIsPowerful: The Sentry Champion has a purple color scheme, representing how its sentries are the most powerful ones.
* SentryGun: Several of the engineer's upgrades revolve around building these to assist in poppage. The 1/0 engineer is easily one of the best starting towers in the game, especially with the tier 4 specialty building. The top path Engineer in ''6'' specializes in building sentries, eventually capable of building sentries with varied damage types such as bombs, lasers, and string waves of plasma (the last of which are unstable, causing them to violently [[StuffBlowingUp explode]] when time is up. This is taken to a head with the Master Builder's three Sentry Paragons; they fire a Plasma Accelerator beam/plasma balls/anti-MOAB rockets respectively, and are each a Paragon-tier defense, alongside spawning even more sentries that function like the Sentry Champion's. [[ArsonMurderAndJaywalking They also explode when redeployed or sold]].
* SupportPartyMember: Naturally, since it's classified as support. It has offensive capabilities, especially as the top path focuses on its sentries, but you'll find much greater use using the middle path upgrades. Its Paragon, however, [[AvertedTrope is dedicated fully to offense.]]
* TrapMaster: It can lay down Bloon Traps on the track, which trap and instantly kill the Bloons that pass over them. In ''6'', it can lay down XXXL Traps, which can trap an entire ZOMG at once.
* TheTurretMaster: The Engineer's most distinctive trait is the ability to set up automatically-shooting sentry guns. The Master Builder takes this a step further — it can build 3 Mega Sentries that ''deploy their own sentries.''
[[/folder]]
[[folder:Bloonchipper]]
[[quoteright:287:https://static.tvtropes.org/pmwiki/pub/images/bmcbloonchipper.png]]
'''Class:''' None
A tower that sucks in single bloons, shreds them, and spits the remains out the back, likely to be sucked right back up.
Its final upgrades are Super Wide Funnel and Supa-Vac.
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* TheCameo: During [=BTD6's=] update 31, a broken and rusty Bloonchipper makes an appearance in the map Junkyard.
* PutOnABus: Of the towers that did not appear in [=BTD6=] at launch, the Bloonchipper is the only one that was confirmed to not be returning in a later update, not counting Special Agents.
* WeaponsThatSuck: And shred bloons, even [=MOABs=] when at 4/x, to bits.
* WoodChipperOfDoom: [[{{WhatItSaysOnTheTin}} Pretty much the game's own deadly woodchipper.]] It can suck bloons, spit out the remains, ''suck in the remains'', and when upgraded, it can suck in MOAB-class Bloons, making it supremely useful to the monkeys, and extremely lethal to the Bloons.
[[/folder]]
[[folder:Heli Pilot]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6heli.png]]
'''Class:''' Military
An air-based tower that follows your touch or mouse pointer around the map and fires 2 darts per shot, each with 2 pierce.
Its final upgrades are Apache Dartship, which has massively increased firepower with missiles and a machine gun, and Support Chinook, which can move other towers around and drop supply crates full of cash and extra lives.
[=BTD6=] adds the Comanche path, which can fire missiles, slow down MOAB-class bloons and summon extra helicopters as Bloons get closer to the exit. The other paths gain extra upgrades as well, with the Apache Prime boasting a devastating arsenal of weapons, and Special Poperations allowing the Chinook to deploy a monkey Marine to shred Bloons with a powerful dart rifle.
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* BiggerOnTheInside: The only explanation as to why the Chinook upgrade allows you to reposition big towers like Flavored Trades and Tech Terror despite them being bigger than what the inside size of the Chinook suggest. Though it has its limits with the Chinook being unable to reposition towers like Sun Temples and Aircraft Carriers.
* CoolPlane: Well, Cool Helicopter. The upgrade paths are based on real life helicopters, the Apache, Chinook, and Comanche.
* DeathFromAbove: The Door Gunner perk for Military Knowledge allows a Support Chinook to pick up a tower below tier 5 and have it open fire on enemies while it carries them around.
* DepthPerplexion: The Razor Rotor upgrade can somehow pop bloons despite the fact that the rotor should be above the bloons. Its upgrade artwork implies the helicopter is leaning downward towards the track to shred bloons.
* EnergyWeapon: The Apache Prime upgrade trades darts for laser projectiles that do more damage and have more pierce, and its primary machine gun is changed to fire far deadlier plasma bolts.
* FlyingSaucer: Its purchasable skin for BTD Battles turns it into a flying saucer.
* HealingFactor: Support Chinook's Supply Crate grants lives to you when you activate its ability.
* HelicopterBlender: The Razor Rotor upgrade, which can pop any kind of bloon that gets near the helicopter.
* ItsRainingMen: The Special Poperations fifth tier upgrades allows the Chinook to temporarily deploy a super-powerful Monkey Marine that shoots bloons to oblivion with a machine gun. It can also do a different version of this by picking up a tower and airdropping them somewhere else to wreak havoc.
* MacrossMissileMassacre: The Apache Dartship can periodically fire a salvo of homing rockets that can track bloons anywhere on the map. Upgrading to Apache Prime significantly increases their damage against blimps.
* MagikarpPower: The Chinook upgrade path mostly focuses on being support. The final upgrade, Special Poperations, however, lets it deploy a very powerful Marine Monkey vapable of tearing bloons to shreds.
* MechanicallyUnusualClass: The Heli-Pilot can fly to wherever you tap your screen or move your pointer, hover in one spot, patrol between two set points, and even chase after the bloons.
* TheMinionMaster: The Comanche Defense upgrade lets the Heli summon up to three smaller helicopters depending on how close the bloons are to the exit. The Comanche Commander makes all three smaller helicopters permanent.
* MoneyMultiplier: The Support Chinook's Supply Crate drops a supply crate that alternates between giving $1500 and $2000 in cash and granting between 50 and 75 lives in [=BTD5=]. In [=BTD6=], it drops both crates at once that each gives $1550 and 10 lives per use. Special Poperations improves the crates to $4500 and 25 lives.
* MoreDakka: The Apache Dartship upgrade installs a machine gun and homing missiles, significantly improving the Heli's power.
* SupportPartyMember: The Chinook upgrade path focuses on blowing back Bloons, moving towers, and making money. Its only offensive upgrade is Special Poperations.
[[/folder]]
[[folder:Monkey Sub]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6sub.png]]
'''Class:''' Military
A water-based tower that shoots homing darts even when unupgraded. It is notable for its Advanced Intel upgrade, which allows it to shoot bloons that are in range of any other tower on the map.
Its upgrade paths in [=BTD5=] are Submerge and Support, which stops it from attacking but removes camo from passing bloons and can be upgraded with a Bloontonium Reactor to rapidly pop nearby bloons, and the Ballistic Missile, which fires powerful missiles and can gain the First Strike Capability ability, which fires a missile powerful enough to instantly erase almost any bloon.
[=BTD6=] mixes up the upgrade tree, and adds a third path, whose Armor Piercing Darts deal extra damage to MOAB-class bloons, and has the Sub Commander ability to increase the power of other nearby subs. The Bloontonium Reactor also gets upgraded into the Energizer, which deals much more damage while further reducing ability cooldowns (especially for other water-based towers) and boosting Heroes' EXP gain, and First Strike Capability into Pre-Emptive Strike, which launches a not-as-deadly but still extremely strong missile at any MOAB-class Bloons that appear on the track.
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* ActionInitiative: The aptly named Pre-Emptive Strike instantly strikes every MOAB-class bloon that enters the screen with a lethal missile, instantly destroying weaker blimps before they can even make a move.[[note]]The missile deals 750 damage, which can instantly kill both normal and fortified M.O.A.Bs, as well as non-fortified B.F.Bs or D.D.Ts provided they don't have buffed HP (like from late Freeplay rounds). If a Sub Commander's buff is active, the missile will deal ''1500'' damage instead.[[/note]]
* FlechetteStorm: Airburst Darts make the Monkey Sub's darts explode into even more darts upon impact. Combined with the massive fire rate increases of other upgrades, it results in this.
* InstantDeathRadius: The Energizer's radioactive aura completely obliterates any standard bloon, doing 3 damage every third of a second without any other upgrades. For reference, ceramics have 18 total layers. They don't survive longer than 2 seconds.
* MacrossMissileMassacre: Pre-Emptive Strike, the final upgrade on its second path, increases its base missile attack rate to once every half second, but where it really shines is when it launches a [=MOAB=] Assassin at EVERY blimp that dares enter the screen. By the time this upgrade becomes affordable and relevant, the game will be throwing [=MOAB=]-class bloons at you ''en masse'', resulting in this trope.
* MookCommander:
** The tier five Sub Commander provides a massive pierce buff and ''doubled'' damage to all Monkey Subs in its radius. With the appropriate Monkey Knowledge, the range limitation is removed, and ''all subs onscreen'' get the bonus just for having a Sub Commander on the track.
** The Bloontonium Reactor reduces the cooldown of nearby water tower abilities (read: First Strike, [=MOAB=] Takedown, and Pat Fusty and Admiral Brickell's abilities) by 15%. Energizer ''halves'' water tower ability cooldowns, and reduces the ability cooldown of all other towers on screen by a fifth.
* MoreDakka: Third path upgrades on the Monkey Sub add more guns which means more firepower. Sub Commander gets special treatment: its base fire rate is doubled compared to a Triple Guns sub, meaning it shoots 6 times as fast as a base sub.
* NecessaryDrawback: Like the Monkey Buccaneer, its strong power is balanced out by needing a body of water to be placed in.
* NukeEm: The First Strike Capability's signature ability launches a powerful nuclear missile at the strongest bloon on screen. Few things can survive this.
* OneHitKill: First Strike Capability launches a super-powerful missile at the strongest bloon on the map, dealing ''10,000'' damage on impact[[note]]The most damage done by a single attack in the game until the Paragons were introduced[[/note]] as well as significant splash damage. At the time of its introduction, this could instantly and completely destroy any bloon, notably being the only thing that could definitively one-shot a Z.O.M.G.,[[note]]For reference, a Z.O.M.G. has 4,000 HP, and fortified Bloons didn't exist at the time, meaning it'd only become able to survive the missile in ''very'' late Freeplay rounds.[[/note]] and any surplus damage from destroying the initial target is shunted onto nearby bloons, allowing it to possibly eliminate groups of blimps at a time. Even when the B.A.D. was introduced, it still remained a useful tool for taking it down as it can take out ''half'' of a non-fortified B.A.D's base HP in one shot, and will completely obliterate the thing if it deals the finishing blow, which usually just needs the blimp to be softened up a bit. Its immense damage also makes it a valuable asset against early Boss Bloon tiers, especially for speedruns.
* PowerNullifier: A submerged Monkey Sub can remove camo from bloons that pass through its radar.
* RecursiveAmmo: Airburst Darts make the main dart explode into several smaller darts.
* {{Roboteching}}: The main attack of the Sub homes onto bloons. Comes in handy when one of its upgrades gives it basically infinite range.
* RussianFashion: The commander of a First Strike Capability sub wears a distinct ushanka in place of the other subs' navy cap.
* SicklyGreenGlow: Bloons affected by the Bloontonium Reactor are indicated with a bright green glow.
* StanceSystem: The Submerge and Support upgrade (along with its upgrades) gives the Submarine a "Submerge" command. When submerged, it stops shooting darts, but instead emits sonar waves that removes camo properties. Further upgrades also let the sonar waves damage bloons and reduce ability cooldown of other towers.
* SupportPartyMember: A Submarine specced for Path 1 has virtually no offensive power, but has a wide variety of utility functions. It starts with the ability to permanently reveal Camos near the Sub and decreasing the cooldowns of nearby water towers, but Energizer causes it to ''halve'' the cooldowns of all nearby water monkeys, increase the XP gain of all nearby heroes by 50%, and passively grant 20% cooldown reduction to ''every tower on the screen''.
* TargetSpotter: With the Advanced Intel upgrade, every other tower becomes one to the Monkey Sub, being able to target any Bloon that is within another tower's range (even of those that can't attack, such as Banana Farms), and can target Camo Bloons as long as that other tower can target them as well.
[[/folder]]
[[folder:Special Agents]]
Unique towers in ''Bloons Tower Defense 5'' that can be purchased with Monkey Money and placed onto maps for extra support. There are a total of thirteen across all versions of the game, and each one gets permanently upgraded after being used enough times.
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* AbnormalAmmo: The projectiles of the Special Agents include bees, acorns, coconuts, banana peels, watermelons and their seeds, and snowballs.
* ADayInTheLimelight: ''[=BTD5=]'' features a special mission, "For Their Eyes Only", where Special Agents are the only towers allowed.
* AscendedExtra: In the mobile version of ''[=BTD4=]'', the Beekeeper is a full-fledged secret tower introduced as a promo for the fifth game, and has its own upgrades.
* BearsAreBadNews: The Beekeeper is a surly, frowning brown bear, and it commands a hive of angry bees to attack with, though it's on the monkeys' side.
* BeeBeeGun: The Beekeeper fires out bees that stick to bloons and deal DamageOverTime. The Beekeeper Pro gets an ability that swarms them onto a hundred bloons at once.
* BulletSeed: The Watermelon Spitter chews on a watermelon when left alone to build up seeds, then rapidly spits them out at passing bloons. The Pro version can spit out the whole watermelon as a projectile.
* TheCameo: In ''BTD6'', the Tribal Turtle (well, Tribal ''Tortoise'') appears as a purchasable cosmetic item in Contested Territory mode.
* ChuckCunninghamSyndrome: Since Special Agents were dropped as a mechanic for ''Bloons Tower Defense 6'', every Special Agent vanished except for the Portable Lake, the Pontoon, the Monkey Farmer, and Super Monkey Storm, which were made into Powers instead and cannot upgrade into Pro variants.
* CoconutMeetsCranium: The Tribal Turtle throws a coconut with every other attack, which pierces more bloons, breaks Lead Bloons, and deals extra damage to Ceramic Bloons.
* CombatTentacles: The Portable Lake Pro's activated ability, "Activate Sea Monster!", calls up an unseen sea creature's tentacle, which attacks several bloons before submerging.
* CrutchCharacter: Most of the combat-oriented Special Agents are very powerful for the early-game, but due to having no upgrades, are unable to compete later in the game.
* EvolvingWeapon:
** Every Special Agent turns into a Pro version once it is bought enough times, making it permanently stronger while keeping its cost the same.
** The Bloonberry Bush grows five more thorns for each round it's out for a maximum of 200, using up those thorns when a bloon runs into it like a pile of Road Spikes. The Bloonberry Bush Pro produces creepers that can grow as well.
** A new Radadactyl hatches out of the nest and begins swooping every round, for up to five Radadactyls.
* HulkingOut: The Angry Squirrel turns green and grows larger whenever a bloon leaks, making it attack faster and giving it camo detection and lead damage for a limited time. Angry Squirrel Pro turns purple when in its anger mode, and only needs to throw enough acorns to transform.
* KillSat: The Bloonsday Device unlocks an activated ability that causes it to fire an orbital laser, which is guided with the mouse and deals high damage to anything it touches. The Pro version leaves behind damaging plasma on the track.
* NonStandardCharacterDesign: The Special Agents are some of the only non-monkey animals seen in the series, making them stand out next to the main towers.
* SmartBomb: Super Monkey Storm, an ability of the Monkey Beacon prior to it getting changed into the Monkey Village, is a screen-wipe that is guaranteed to pop every standard bloon and deal high damage to MOAB-class bloons.
* {{Snowlems}}: The Mad Snowman is a living snowman who throws freezing snowballs at the bloons, but melts away after 10 rounds (20 in its Pro form).
* SupportPartyMember:
** The Meerkat Spy provides camo detection to any towers in its radius. The Meerkat Spy Pro swaps out its eyepatch for a laser eye and gains the ability to attack.
** The Pontoon and Portable Lake act as platforms to place land towers on water or water towers on land, respectively. While the Portable Lake Pro gets an activated ability that summons a sea monster tentacle to attack bloons, the Pontoon can't attack at all and its Pro upgrade enhances the range of towers placed on it.
** The Banana Farmer exists to automatically collect Banana Farm drops. Once it becomes the Monkey Farmer Pro, it can spread banana peels onto the track to knock bloons back, but still can't pop them.
[[/folder]]
[[folder:Wizard Lord]]
[[quoteright:136:https://static.tvtropes.org/pmwiki/pub/images/dd05ff18_6625_4d04_a0df_45a7ec5df9a3.png]]
A special tower only available in the "Wizard Lord" Special Mission in ''Bloons Tower Defense 5''. He acts as a 4/4 Monkey Apprentice, having the abilities of both paths plus a stronger phoenix ability, but needs to feed on other towers to stick around.
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* AllYourPowersCombined: As a 4/4 tower in function, he has the Tempest Tornado of the Monkey Apprentice's first path and the Dragon's Breath and Summon (Super) Phoenix of its second path, along with every previous spell. His appearance reflects this, as he has the ProphetEyes of a Master of Fire and is FlyingOnACloud like the Master of Air.
* TheArchmage: The closest thing the Wizard Monkeys had to one before the fifth-tier Archmage and the Magnus Perfectus paragon in the sixth game, as the Wizard Lord can cast every spell and has an empowered ability as well.
* EvilLaugh: He lets out a sinister laugh whenever he feeds on a tower.
* NoFairCheating: If you think you could simply spam Special Agents as a stand-in for your towers, he will not consume them and will just leave, resulting in a NonStandardGameOver.
* OneShotCharacter: While Wizard Lords can be bought as decorative items in ''Bloons Monkey City'', the tower itself has only shown up in one special mission of the fifth game. The Archmage of ''[=BTD6=]'' is its own take on the idea, as it gains the Shimmer and Dragon's Breath powers of the other upgrade paths but doesn't feed on other towers.
* PowerAtAPrice: The Wizard Lord is very strong, but he removes the most expensive tower on the map every other turn, and he'll leave if there are no towers for him to consume, which counts as a NonStandardGameOver.
* PurposefullyOverpowered: The Wizard Lord is broken in terms of power, but also unwieldy because of his need to sacrifice expensive towers. Part of the challenge's difficulty is supporting the Wizard Lord (since he can't handle every round by himself) without wasting money on costly towers that will be lost.
[[/folder]]
[[folder:COBRA]]
A special tower that uses a pistol which pops two layers per shot. However, its true power comes from its upgrades, designed to support your side or debilitate the enemy in powerful and unorthodox ways.
Its final upgrades are Offensive Push, which allow Bloons to be sent a round earlier than the one they usually become unlocked at, and Misdirection, which lets it periodically move the highest level enemy Bloon to the opponent's side.
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* DualWielding: Its Double Tap upgrade has it wield two guns at once.
* FunWithAcronyms: The COBRA stands for '''C'''overt '''O'''ps '''B'''attles '''R'''esponse '''A'''gent.
* HoistByHisOwnPetard: The Misdirection ability allows the COBRA to send the strongest bloon on their side to the enemy's instead. If the enemy has been investing in offense or is otherwise unprepared to defend against the bloon they just sent to attack, they're in big trouble.
* LifeDrain: With its Attrition upgrade, it will periodically steal two lives from the opponent. For balance reasons, while this can't outright defeat an enemy (if they're at 1 HP, it'll give you $30 instead), it will still leave them on the brink of defeat while keeping you healthy - making a battle against a COBRA user a race against time unless you also have one on hand. On Defense mode, it just causes you to [[HealingFactor regenerate 2 lives]] instead.
* MechanicallyUnusualClass: It's the only tower in the game which affects the players instead of just attacking the bloons.
* MoneyMultiplier: With Wired Funds, the COBRA will give the player an additional $80 each round, which stacks.
* MyRulesAreNotYourRules: Offensive Push allows the user to unlock the next tier of bloons one round earlier than usual, which usually also means one round earlier than the opponent unless they're also packing a Path 1 COBRA of their own. Furthermore, this stacks if you send out multiple - it's not unheard of for Z.O.M.Gs being sent out in ''half the time''' they'd normally take to unlock.
* SupportPartyMember: Its entire gimmick is the wide array of unconventional support buffs it can give the player. These range from giving you extra cash and regenerating/stealing lives, to decreasing cooldowns on special abilities, to lowering the minimum round requirement for certain Bloon attacks, to even sending the enemy's forces back at them.
* WeakButSkilled: The COBRA isn't a very strong attacking tower, but its upgrades can help harass your opponent or even defend yourself.
[[/folder]]
!!Towers introduced in Bloons Tower Defense 6:
[[folder:Alchemist]]
[[quoteright:288:https://static.tvtropes.org/pmwiki/pub/images/btd6alchemist.png]]
'''Class:''' Magic
The alchemist throws acid potions which splash onto bloons and gradually melt them. Unlike most towers, these potions are lobbed at Bloons, meaning the Alchemist can ignore walls and other line-of-sight blockers and hit targets wherever they are.
Its first upgrade path focuses on buffs: Acidic Mixture Dip allows any monkey to pop lead and deal extra damage to ceramic and MOAB-class bloons, and Berserker Brew increases damage, range, and attack speed, which can be further increased with the Stronger Stimulant and made permanent with Permanent Brew. The second path is a more straightforward attacker, using Stronger Acid to dissolve bloons faster, Perishing Potions to remove fortification from lead and ceramic blooms, Unstable Concoction to make MOAB-class bloons explode violently when popped, and Transforming Tonic to turn into a powerful attacking monster, with the final upgrade, Total Transformation, also affecting nearby monkeys. Finally, the bottom path focuses on transmutation: Lead to Gold grants lots of extra money when popping lead bloons, Rubber to Gold splashes bloons with a potion that extends this effect to any kind of bloon, and the Bloon Master Alchemist wields a powerful shrinking potion that can turn any bloon into a basic red bloon.
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* AlchemyIsMagic: The Alchemist is classified as a Magic monkey, capable of creating various potions with powerful effects.
* AwesomeButImpractical: The Bloon Master Alchemist can turn almost any bloon into [[TheGoomba a red bloon]], even a ZOMG! While the prospect of taking out the second-strongest enemy in two attacks might sound enticing, this has a serious drawback: you don't get ''any'' money from the layers removed by the shrinking potion, which can seriously cripple your income. It's especially bad on [[HarderThanHard CHIMPS mode]], where you can't use Farms to make up for the lost money.
* EyeBeam: The attack monsters from Total Transformation shoots blue beams from their eyes at a really fast rate.
* HPToOne: What the Bloon Master Alchemist's shrink potion essentially is. It transforms any Bloon it hits into a Red Bloon, which only requires 1 damage to pop.
* JekyllAndHyde: The Transforming Tonic ability turns its owner Alchemist from a somewhat-unhinged scientist into a savage beast of incredible power. Bonus for the mechanism being a clear shout out to the [[Literature/TheStrangeCaseOfDrJekyllAndMrHyde trope maker]].
* MadScientist: The middle path Alchemist looks more and more unhinged with each upgrade. It also gains the ability to transform itself and other monkeys into savage monsters.
* MoneyMultiplier: The "Lead to Gold" upgrade grants extra money when the alchemist pops a lead bloon, while "Rubber to Gold" increases the value of affected bloons. Inverted by the Bloon Master Alchemist, whose shrinking potion turns any [[ContractualBossImmunity non-BAD]] bloon into a red bloon, but also gives them the money bounty of one.
* NonIndicativeName: The "Rubber to Gold" upgrade allows the Alchemist to partially turn the affected bloons into gold - even Lead, Ceramics, and MOAB-Class Bloons, which are clearly not made of rubber.
* NoSelfBuffs: An Alchemist cannot benefit from its own potions.
* OneHitKill: The "Lead to Gold" upgrade makes the Alchemist's potions and acid pools completely pop any Lead Bloon that gets hit, regardless of whether it was Fortified or not.
* PimpDuds: The Bloon Master Alchemist is decked out in a golden, jewel-encrusted uniform with cool shades.
* PowerNullifier: Perishing Potions can remove the fortified property off of Lead and Ceramic Bloons.
* ShrinkRay: The Bloon Master Alchemist has a shrink potion which turns any bloon into a red bloon. This works on anything up to a Z.O.M.G, effectively one-shotting them.
* StatusBuff: One upgrade path specializes in this. Acidic Mixture Dip allows allies to pop lead bloons and deal extra damage against ceramic and MOAB-class bloons, and Berserker Brew increases damage, range, and attack speed.
* SuperMode: Transforming Tonic turns the alchemist into a monster with powerful attacks. The Total Transformation upgrade turns up to five other nearby monkeys along with him.
* SupportPartyMember: The Alchemist's damage output in the top and bottom paths, outside of what is provided by the "Lead to Gold" and "Bloon Master Alchemist" upgrades, is very limited, so an Alchemist on either of these paths is almost exclusively used to provide buffs towards other monkeys or generate extra money.
* {{Transmutation}}: The bottom path Alchemist specializes in this, with Lead to Gold [[PhilosophersStone instantly turning lead bloons into gold]], Rubber to Gold applying a debuff to bloons with a special potion that makes them grant increased cash, and Bloon Master Alchemist being able to transform any bloon up to a ZOMG into a [[HPToOne lowly Red bloon]].
* WeaponOfXSlaying:
** Perishing Potions deals bonus damage to MOAB-class bloons as well as removes the Fortified property off normal bloons. These properties combine to do a whopping ''20 damage'' to fortified blimps.[[note]]For comparison, it does only 5 to non-fortified blimps, meaning it kills a fortified blimp twice as fast as a normal blimp.[[/note]]
** Lead to Gold potions deal bonus damage to Lead Bloons- enough to pop them in one shot. This damage bonus also applies to [=DDTs=].
[[/folder]]
[[folder:Druid]]
[[quoteright:338:https://static.tvtropes.org/pmwiki/pub/images/btd6druid.png]]
'''Class:''' Magic
The druid attacks by throwing a volley of sharp thorns at bloons.
Its first upgrade path grants it command over air: Heart of Thunder fires an arc of electricity, the Druid of the Storm can blow bloons towards the entrance with a tornado, Ball Lightning fires an orb which zaps nearby bloons, and the Superstorm boosts the tornado to affect any bloon type. The second upgrade path, Druid of the Jungle, allows the druid to summon vines to immobilize a bloon, use Jungle's Bounty to earn extra money from nearby farms, and eventually become a Spirit of the Forest which covers the whole path with thorny vines and earns extra lives and money. The bottom path allows the druid to channel his wrath: the Druid of Wrath gains attack speed the longer targets remain in range, Poplust further boosts the speed of all nearby druids and can stack with other Poplust druids, and the Avatar of Wrath deals more damage the more RBE there is on the map.
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* BlowYouAway: A Druid of the Storm can create a tornado to blow bloons back to the entrance. The Superstorm upgrade takes this even further by letting it blow back anything that isn't a B.A.D.
* ChainLightning: The Heart of Thunder upgrade grants the druid a lightning attack that hops from Bloons to Bloons. The Ball Lightning upgrade lets the druid shoot a ball, which then shoots at Bloons with chain lightnings which can also [[KillItWithIce freeze Bloons]].
* DecompositeCharacter: The druid's storm upgrade path is based on the apprentice's air path, having a ChainLightning and tornado spell.
* {{Druid}}: The "priest of nature" kind. Its basic attack is throwing a flurry of wooden thorns at Bloons. One of its upgrade paths focus on controlling the storms, and another focuses on the power of plants.
* FlechetteStorm: The druid's base attack consists of throwing a flurry of small thorns in a SpreadShot. It can be boosted to a truly ridiculous level if you have several Poplust druids in close proximity boosting each other's attack speed.
* GreenThumb: A Druid of the Jungle can summon vines to immobilize a bloon. Further upgrades allow it to instantly make nearby farms produce extra money, or create a huge patch of vines along the path.
* LightningWindJuxtaposition: His top path upgrades allow him to use thunder magic and to summon tornadoes. The last upgrade of that path allows him to summon electrified tornadoes.
* MoneyMultiplier: Jungle's Bounty instantly grants you money for each banana farm in range of the druid.
* OneHitKill: A Druid of the Jungle is able to instantly destroy any single non-MOAB class bloon with a slow-attacking vine. Upgrading to Nature's Bounty lets it do this to two bloons at a time.
* RedEyesTakeWarning: The Avatar of Wrath has 'em. As the Druid with the most offensive strength, it's best to take heed. Poplust druids' wolf pelts also have red eyes.
* RedIsViolent: The bottom path of the Druid, which specializes in overwhelming attack power, has a predominant red motif to highlight this. Druids with the Heart of Vengeance wear a ruby gem on their head, and Poplust druids throw black horns that are tinted with red. The Avatar of Wrath culminates this with its red eyes and fur.
* SpamAttack: The bottom path specializes in raising the druid's attack speed to ludicrous levels: Heart of Vengeance can up to double the druid's attack speed, the Druid of Wrath can double it again if it continuously attacks long enough, and having nearby druids with Poplust can add even more speed to that.
* SpreadShot: Throws a spread of thorns.
* UnstoppableRage: The bottom path of upgrades increases the druid's power as it grows angrier, and its artwork portrays it becoming more and more furious as it's upgraded. Heart of Vengeance increases its attack speed when you lose lives, and the Avatar of Wrath gains more damage the more bloons (based on RBE, not total numbers) are on the screen.
[[/folder]]
[[folder:Beast Handler]]
[[quoteright:256:https://static.tvtropes.org/pmwiki/pub/images/beasthandler.png]]
'''Class:''' Support
A Support Tower that was introduced in the 36.0 update. It normally uses a melee attack, but its upgrades let it summon various beasts to fight the Bloons in its stead, and multiple Beast Handlers can merge their beasts together to increase their individual power.
The top path specializes in aquatic beasts that strike foes from the water, with higher tiers becoming able to drag larger bloons into the water to instantly defeat them. The middle path summons land-based dinosaurs that bite at bloons, with higher tiers improving their damage output and providing extra utility like an area stun and boosted damage against impaired targets. The bottom path focuses on birds of prey that strike from above and drag bloons to a designated point, with higher tiers being able to drag more and larger bloons at once. Uniquely among towers, the Tier 5 Beasts are so fearsome that they require four Tier 4 Beast Handlers of that path to even use them.
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* AttackAnimal: The eponymous "beasts" they handle are as varied as they are deadly:
** The top path uses aquatic animals, such as [[PiranhaProblem piranhas]], [[ThreateningShark great whites]], [[DeviousDolphins orcas]], and even a mighty Megalodon.
** The middle path uses land-dwelling dinosaurs, from the humble ''Microraptor'' to the cunning ''[[RaptorAttack Velociraptor]]'' to the mighty ''[[TerrifyingTyrannosaur Tyrannosaurus rex]]'', and even greater beasts beyond...
** The bottom path relies on falconry, using birds like horned owls, great eagles, and condors. At max power, they can control the legendary [[RocBirds Pouākai]]!
* AttackAttackAttack: For a Support category tower, it's very damage-oriented across all of its paths; the most support-related aspect being the birds of prey's ability to drag bloons back towards the entrance.
* TheBeastMaster: It's in its name, using various animals such as birds, fish and reptiles to pop Bloons.
* DoubleUnlock: Tier 5 Beast Handlers don't just need to be unlocked and then bought. Due to the sheer power of the beasts in question, you need a minimum of three other Tier 4 Beast Handlers of that type, merged into the same handler, in order to actually control and upgrade to a Tier 5 beast.
* FusionDance: Starting at Tier 2, Beast Handlers can merge other beasts of their kind into one, drastically increasing that one beast's attack power. Higher tiers contribute more power but also have a higher maximum strength.
* InjuredVulnerability: Starting from the Velociraptor, dinosaurs will deal bonus damage to stunned bloons. This comes in handy with the fourth and fifth tiers, which have wide-reaching stuns.
* LandSeaSky: The three types of beasts it can control. The middle path focuses on land-based predators, the top path on ocean-dwelling ones, and the bottom path on predatory birds.
* MagikarpPower: Beast Handlers are somewhat unremarkable without sufficient upgrades or beast power, and will need a ton of additional leveled Handlers if they want to acquire a max power Beast, on top of the Tier 5 upgrades outright being barred unless at least four Tier 4 Beast Handlers of that type are on the screen. All of this is a process that can take an extremely large money and space investment, especially since the Handlers assisting the primary one are effectively dead weight. However, investing in Beast Power will ''dramatically'' improve their abilities and sometimes give them completely new ones - any max power Beast is a force to be reckoned with for its tier, and a max power ''Tier 5'' is one of the strongest normal towers available.
* MechanicallyUnusualClass: Is it ever! For starters, the moment you upgrade a Beast Handler, it's no longer the monkey itself that does the attacking, rather relying on its animal to do all the fighting, which can be repositioned to any location in its range. Additionally, Beast Handlers have their own unique "merging" system, where multiple beasts of one type can combine into one to dramatically increase its power. On top of that, the Beast Handler also can't be sacrificed, buffed by Alchemists, nor are able to be repositioned with Support Chinook (a restriction that is typically for the non-monkey towers).
* OneHitKill: At its top path, starting from the Great White, it’s able to instantly pop bloons by dragging them to the water. As it gets upgraded into higher tiers and increases in Beast Power, it can drag stronger and stronger bloons. At its strongest, it can even do this to ''[=BADs=]'' (though only until Round 150. They attack like normal otherwise).
* ShockwaveStomp: Starting from the Tier 4 Tyrannosaurus Rex, the dinosaur beast will gain the ability to stomp the ground, damaging and stunning all bloons up to [=ZOMG=]s in range. The Giganotosaurus improves this ability by extending its duration and making the shockwave hit the whole map.
[[/folder]]
[[folder:Cave Monkey]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/cave_monkey.png]]
'''Class:''' Item
A secret tower exclusive to the map "Frozen Over". It is stuck under the frozen lake, but can be freed if a Mortar Tower shoots at its location enough times, which causes it to appear in a set location near the start of the map. Its only attack consists of swinging its club, which stuns affected Bloons (including [=MOABs=]), and it cannot be upgraded.
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* AllCavemenWereNeanderthals: The Cave Monkey is bigger and more brutish than most other monkeys.
* BigOlEyebrows: Its bushy eyebrows contribute to its savage, primitive look.
* ContemporaryCaveman: After being [[HumanPopsicle frozen under the surface of a lake]] for who knows how long, it can be freed by a modern artillery cannon and recruited to join the fight against the Bloons.
* EasterEgg: Only appears on one map, and has a specific requirement to get him.
* HumanPopsicle: It can be seen frozen solid in the ice of the "Frozen Over" map.
* PeltsOfTheBarbarian: The Cave Monkey is dressed in a generic spotted fur drape similar to those worn by stereotypical cavemen.
* PrimitiveClubs: Befitting a caveman (or, cave monkey in this case), it wields a large wooden club capable of stunning even MOAB-class bloons.
* SecretCharacter: Prior to ''[=BTD6=]'' Patch 17.0, it was just a background decoration on one map. After that patch, it can be temporarily unlocked for a single game by having a Mortar Tower fire at it several times.
[[/folder]]
[[folder:Dungeon Statue]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/capture_413.PNG]]
'''Class:''' Item
A secret tower that only appears in "Dark Dungeons". By clicking on both torches and then the statue in the middle and then paying $50,000, the statues comes to life and starts attacking the Bloons. It can be upgraded to deal more damage.
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* AwesomeButImpractical: Despite dealing a lot of damage, it is very expensive to summon and upgrade so it isn't used very often.
* RecurringElement: Like the temple on the Monkey Temple track in ''[=BTD4=]'', it's a map fixture which can be turned into a powerful tower by paying money.
* SecretCharacter: Only appears on one map, and the requirement to unlock it isn't said in-game.
* ShockAndAwe: Its orb shoots a bolt at the Bloons.
* ShoutOut: Its pose is a reference to [[https://knowyourmeme.com/photos/2259810-pondering-my-orb the cover]] of the ''Franchise/TheLordOfTheRings'' gamebook ''Middle-Earth Quest: A Spy In Isengard''.
[[/folder]]
'''Towers''' | [[Characters/BloonsTowerDefenseHeroes Heroes]] | [[Characters/BloonsTowerDefenseBloons Bloons]]]]]]
!!Towers introduced in Bloons Tower Defense:
[[folder:Dart Monkey]]
[[quoteright:325:https://static.tvtropes.org/pmwiki/pub/images/btd6dart.png]]
'''Class:''' Primary
The most basic unit you get. Shoots a single dart that pops a single bloon (except in ''6'', where it can now pop 2).
Its upgrade paths in [=BTD5=] are the Spike-o-Pult, which launch spiked balls that can pop a very large number of bloons before stopping, and Super Monkey Fan Club, which temporarily transforms it and other nearby dart monkeys into Super Monkeys.
In Bloons TD 6, it keeps the Spike-o-Pult and Super Monkey Fan Club upgrade paths, respectively adding to them the Ultra-Juggernaut which can split into even more Juggernaut balls, and the Plasma Monkey Fan Club which converts nearby Dart Monkeys into Plasma Monkeys. It also adds the Crossbow upgrade path, which specializes in popping multiple layers at the same time and culminating in the Crossbow Master, dealing high damage at a rapid pace from long range.
Its Paragon upgrade is the Apex Plasma Master, which rapidly fires bouncing, splitting, spiked plasma balls to decimate everything on the screen.
----
* AllEncompassingMantle: x/4 Dart Monkeys have green ones in [=BTD5=]. The Crossbow Master wears a black one in 6.
* AllYourPowersCombined: The Dart Monkey Paragon, the Apex Plasma Master, rides a gigantic ballista crossbow which rapidly fires three plasma Ultra-Juggernaut balls, combining the attacks of the Ultra-Juggernaut, Plasma Monkey Fan Club, and Crossbow Master.
* AutomaticCrossbow: Bottom path Dart Monkeys in 6 equip a fast-firing crossbow.
* BoringButPractical: Cheap, simple, yet undoubtedly effective, with its upgrades surprisingly carrying over well into the lategame. Even the [[AllYourPowersCombined Apex Plasma Master]] is BoringButPractical by Paragon standards, being weaker but comparatively cheap.
* CompositeCharacter: The Spike-o-Pult was one of the new towers in [=BTD3=], but [=BTD4=] fused it with the Dart Monkey due to their similarities and has remained one of its upgrade paths since then.
* CriticalHit: The Sharp Shooter upgrade in [=BTD6=] causes one out of every few shots to deal much more damage. This ability gets enhanced for the Crossbow Master
* ElementalRockPaperScissors: Juggernaut deals five times the damage to Ceramic Bloons, while the Ultra-Juggernaut bumps it up to eight times (five times for the split balls). The Apex Plasma Master deals ''105'' Ceramic damage at base.
* HyperDestructiveBouncingBall: In ''[=BTD6=]'', the Spike-o-pult and its upgrades throws spiky balls that can bounce around obstacles. While it's a niche utility for the most part, it's good for maps with a lot of obstacles, especially after an update that allows a bouncing spikeball to re-hit a Bloon. The Ultra-Juggernaut is nightmarishly strong in maps like Moon Landing and Cornfield because of all the obstacles the balls can bounce from.
* MagikarpPower: Because the power of the basic Dart Monkey is low, the difference between it and a fully upgraded version is immense. The basic version throws a small dart a moderate distance about once a second for one damage. The Ultra-Juggernaut throws a gigantic spiked ball that can pierce through tons of Bloons and split into even more projectiles; the Plasma Monkey Fan Club can transform other Dart Monkeys into powerful Super Monkeys with plasma vision temporarily; and the [[MasterOfAll universally useful]] Crossbow Master shoots giant armor piercing drill-bolts halfway across the map eight times a second for six damage with a ton of pierce, can see and hurt anything, and does massive fifty-damage hits more than once a second. If you can afford the Paragon upgrade, the Apex Plasma Master, you get a rapid-firing tower that launches heavily-damaging projectiles that cover nearly the entire map.
* MultiShot: Triple Shot allows the Dart Monkey to throw three darts at once.
* NonIndicativeName: Dart Monkeys who have the Spike-o-pult upgrade or the Crossbow upgrade and above are still called Dart Monkeys.
* OneHitPolykill: A Dart Monkey can upgrade to pop 2, then 4 bloons per shot if fired down a straight line. On the other hand, the Spike-o-Pult can pop up to 18 bloons in one go, and the Juggernaut can pop up to ''104''.
* PinballProjectile: Juggernaut shots can bounce off of walls that would block other projectiles.
* RecursiveAmmo: The Ultra-Juggernaut fires one Juggernaut ball which splits into six more.
* SiegeEngines: Spike-o-Pult and Juggernaut have the monkey switch out their hand-thrown darts for a slower-firing catapult which launches giant spiked balls.
* SpikeBallsOfDoom: The Spike-o-Pult launches large spiked balls that can pop up to 18 bloons. Juggernaut's spiked balls are several times the monkey's size. The Ultra-Juggernaut then bursts into six more Juggernaut balls when reaching the edge of the screen.
* StartingEquipment: The first monkey you unlock in every game it appears in. Even in a session, it's also the cheapest Monkey available to buy. In ''[=BTD6=]'', there's even a TechTree upgrade that makes the first Dart Monkey free to place.
* SuperMode: Super Monkey Fan Club transforms it and around 10 other Dart Monkeys in its vicinity into [[SpamAttack Super Monkeys]] for 15 seconds. ''[=BTD6=]'' adds a further upgrade, Plasma Monkey Fan Club, which converts up to 20 Dart Monkeys and grants them [[EyeBeams plasma vision]].
* ThisLooksLikeAJobForAquaman: The Juggernaut and Ultra-Juggernaut upgrades are much more useful in maps where they can bounce a lot, such as Cornfield, Moon Landing, Encrypted, or Hedge. This also applies to the Paragon, Apex Plasma Master: maps which have tight quarters can drastically magnify the damage it puts out, making it very cost-efficient for a Paragon (and it is already the cheapest Paragon in the game).
* ZergRush: Their cheap costs allows them to be spammed quite liberally. It's even encouraged with the Super/Plasma Monkey Fan Club ability, which temporarily superbuffs other Dart Monkeys. In ''6'', the Monkey City upgrade of the Village also gives you one free Dart Monkey every round.
[[/folder]]
[[folder:Tack Shooter]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6tack.png]]
'''Class:''' Primary
A short-ranged tower that fires 8 tacks all around it. Excellent for corners or other choke points.
Its upgrade paths in [=BTD5=] are the Tack Sprayer, which launches 16 tacks instead of 8 and can be upgraded to the Ring of Fire, which shoots an unavoidable circle of flames, and the Blade Shooter, which fires large blades with increased popping power and can be upgraded to the Blade Maelstrom for a deadly barrage of saw blades covering the whole screen.
[=BTD6=] changes up these paths. Its first path is the Hot Shots, which slightly increases attack speed, can pop lead, and leads to the Ring of Fire and Inferno Ring abilities, the latter of which can periodically fire a powerful meteor with infinite range. The second path is the Blade Shooter, which is similar to how it was in [=BTD5=]. Its third path is the Tack Sprayer, which also is mostly unchanged, but leads to Overdrive and The Tack Zone, which fire huge amounts of tacks at an extremely high rate.
----
* BoringButPractical: Not a very flashy attacker, but the Tack Shooter is very cheap and one of the most cost-effective ways to thin out bloon rushes: in theory, it can do 8 damage per shot without needing any upgrades, much more than any other similarly-priced base tower (though reaching this maximum is very situational and only possible in certain positions).
* CloseRangeCombatant: Has incredibly short range which emphasizes its dense spray of tacks well. It does have several upgrades to mitigate this weakness, however.
* DeadlyDisc: The Blade Shooter upgrade allows them to fire buzzsaws instead of tacks which are harder to miss and can pop more bloons.
* ExactlyWhatItSaysOnTheTin: While most of the upgrade descriptions are very direct, the Tack Shooter deserves a mention.
-->'''Faster Shooting:''' Shoots tacks faster.
-->'''Even Faster Shooting:''' Shoots tacks even faster!
* FireBreathingWeapon: The Ring of Fire shoots a fiery burst that burns through bloons, including Lead and Frozen bloons.
* MultiDirectionalBarrage: Their specialty is firing all around themselves indiscriminately. Blade Maelstrom allows it to unleash this ''on the entire screen.''
* MultiShot: Tack Shooters fire 8 shots at a time, and with the Tack Sprayer upgrade that can increase to 18.
* NonIndicativeName: Tack Shooters with the Ring of Fire upgrade or the Blade Shooter upgrade and above are still called Tack Shooters.
* OneHitPolykill: Blade Shooter allows it to tear through multiple bloons per shot, while Ring of Fire lets it pop up to 60 per burst. Blade Maelstrom and Super Maelstrom, on the other hand, can pop many, many more Bloons per blade.
* ScissorsCutsRock: The Super Maelstrom upgrade allows the Tack Shooter to pop Lead bloons with regular blades, even though the previous upgrades cannot do so.
* SentryGun: {{Subverted}}. It appears to be a fully-automatic bloon-popping machine, but as seen in ''[[VideoGame/BloonsTDBattles Bloons TD Battles 2]]'', there's a monkey hiding inside.
* SimpleYetAwesome: The bottom path upgrades, instead of giving it more powerful projectiles or new abilities, just directly upgrade the Tack Shooter's rate of fire and let it fire more and more tacks, to devastating effect.
* SpikeShooter: It shoots 8 tacks in a ring around it, which can be increased in number as it upgrades. While the bottom path increases the amounts of tacks fired to a ludicrous level, the top and middle path [[AvertedTrope replace the tacks with something else]], however.
* StormOfBlades: Its Blade Maelstrom ability produces this, though with sawblades.
* TruthInTelevision: Bloons Monkey City reveals that the Ring of Fire uses [[https://en.wikipedia.org/wiki/Thermite Thermite]], an extremely flammable incendiary exponent, as fuel.
[[/folder]]
[[folder:Ice Tower/Ice Monkey]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6ice.png]]
'''Class:''' Primary
A short-ranged support tower that unleashes cold blasts to briefly freeze bloons solid. Frozen bloons cannot move, but also cannot be harmed by piercing weapons.
In [=BTD5=], its first upgrade path grants it the Arctic Wind ability, which greatly increases its range and slows down all nearby bloons, and Viral Frost, which causes frozen bloons to freeze any other bloon that touches it. Its second upgrade path grants it Ice Shards, which causes frozen bloons to explode when popped, damaging other nearby bloons, and Absolute Zero, an active ability which freezes every bloon on the screen except for [=MOABs=].
In [=BTD6=], its upgrades are changed. The top path contains Ice Shards, and adds the Embrittlement and Super Brittle abilities, which increase damage taken by frozen bloons. The middle path contains the Arctic Wind, Snowstorm (an active ability similar to Absolute Zero in [=BTD5=]), and Absolute Zero upgrades. The bottom path is the most unique, granting the Ice Monkey a Cryo Cannon which doesn't freeze bloons in a circle around it, but rather shoots explosive projectiles that can freeze foes from afar, and can be further upgraded with Ice Shards and Icicle Impale, which deals extra damage to MOAB-class bloons. All tier 5 abilities are capable of freezing [=MOABs=].
----
* AllEncompassingMantle: An 4/x Ice Tower has a blue one in [=BTD5=].
* AmazingTechnicolorPopulation: Most of the standard monkeys are brown, but Ice Monkey has white fur and dark blue skin.
* BattleAura: Arctic Wind gives it an aura that passively slows bloons just by being near them.
* {{BFG}}: The Cryo Cannon upgrade and further iterations. Special mention to Icicle Impale, whose cryo cannon is so big that the Ice Monkey wielding it has to lean to counter its weight.
* BigfootSasquatchAndYeti: The tower's appearance in [=BTD5=] and games after it have a yeti-like design with white, slightly scruffier fur, fitting with their ice powers. It's more pronounced in upgrades such as Ice Shards or Super Brittle.
* CloseRangeCombatant: Has incredibly short range. Cryo Cannon remedies this by turning it into a more standard shooting tower with a long attack range.
* DamageIncreasingDebuff: The Embrittlement upgrade makes all bloons affected by an Ice Monkey's freeze take more damage while frozen, including MOAB-class bloons (although they still can't be frozen). Super Brittle significantly improves the damage amplification.
* EarlyInstallmentCharacterDesignDifference: In the first four games, Ice Towers were machines like the Tack Shooter and Bomb Tower, appearing as a snowglobe-like device that froze surrounding Bloons. The fifth game changed the tower into a white yeti-like monkey with ice powers, and this was kept starting from ''Bloons Monkey City'' alongside changing its name from Ice Tower to Ice Monkey.
* HarmlessFreezing: Prior to [=BTD6=], Ice Monkeys can't damage bloons until they are upgraded with Snap Freeze.
* HerdHittingAttack: The main draw of using the Ice Tower is its very high popping power for a base tower, even more than that of a Bomb Tower.
* AnIcePerson: Originally the tower was a freezing machine, but [=BTD5=] onwards makes it an ice-elemental monkey.
* ImprovisedPlatform: The Arctic Wind upgrade in ''6'' freezes nearby water, allowing land-based towers to be placed on water, which normally would be impossible. Notably, this allows normally land-based units to benefit from buffs normally exclusive to aquatic towers, such as Carrier Flagship and Energizer.
* KillItWithIce: With the Snap Freeze upgrade, frozen bloons are popped once. In [=BTD6=], this ability is included by default.
* LiterallyShatteredLives: Weaponized with Ice Shards - frozen bloons will explode into damaging ice shards when popped, hitting even more bloons around it.
* MythologyGag: The "Snowstorm" upgrade for the Ice Monkey in [=BTD6=] has it stand atop a miniature mountain that looks incredibly similar to the original Ice Tower.
* NoSell:
** Absolute Zero can freeze White and Zebra bloons, which are normally immune to its attacks.
** In [=BTD6=], they're immune to the freezing effects in the Glacial Trial map.
* ScissorsCutsRock: The Icicle Impale upgrade allows the Ice Monkey to pop and freeze White and Zebra bloons.
* StatusEffects: Can freeze enemies, and slow them with certain upgrades.
* SupportPartyMember: In games before [=BTD6=], it can't deal damage without Snap Freeze, but can immobilize and slow down enemies. In [=BTD6=], it gains increased supportive utility with its new paths, such as the [[DamageIncreasingDebuff Embrittlement and Super Brittle upgrades]], as well as the Icicle Impale, slowing even the toughest of MOAB-class bloons to a crawl.
* UnwantedAssistance: Ice Towers can occasionally be seen as this, since frozen bloons can NoSell piercing weapons.
* TheVirus: Viral Frost has an interesting variation. It freezes bloons so cold that any bloon that so much as ''touches'' a frozen bloon will also be frozen solid. This allows the freeze to spread incredibly fast, pretty much completely immobilizing all and any bloons aside from MOAB-classes.
[[/folder]]
[[folder:Bomb Tower/Bomb Shooter]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6bomb.png]]
'''Class:''' Primary
A mid-ranged cannon that launches explosive bombs to deal area damage.
In [=BTD5=], its first upgrade path has the Cluster Bomb ability, which launches secondary bombs from the explosion to increase the affected radius, and Bloon Impact, which briefly stuns affected bloons. The second upgrade path focuses on damaging MOAB-Class bloons with MOAB Mauler, which deals extra damage to them, and MOAB Assassin, which fires a powerful missile towards the nearest MOAB and deals huge damage.
[=BTD6=] changes around the upgrade paths. The first one leads to Bloon Impact, which can be upgraded into the even more powerful and explosive Bloon Crush, stunning crowds of bloons with the sheer explosive force of the blasts. The second remains mostly the same, with the addition of the MOAB Eliminator, which deals much more damage with a shorter ability cooldown. The bottom path gains Cluster Bombs, and can be upgraded to have the smaller bombs [[RecursiveAmmo each explode into a cluster bomb again]] with Recursive Cluster and the more devastating Bomb Blitz, which [[DesperationAttack deals huge damage to everything onscreen the moment a bloon leaks]].
----
* BoringButPractical: The Bomb Tower has arguably the least impressive upgrade cosmetics of any tower, which is particularly notable in ''[=BTD6=]''. While the majority of the towers get some drastic makeovers with only a few upgrades, and are borderline unrecognizable once they get to tier 5, the Bomb Tower tends to look more or less exactly as it did at level 1, just bigger and with some color highlights. The only path that drastically changes its appearance is path 2 which instead turns it into a missile launcher, in which case it's basically just a black missile with a face painted on it.
* CartoonBomb: What it normally fires, unless you upgrade it into Missile Launcher.
* CripplingOverspecialization: The second upgrade path for the Bomb Shooter is very good at dealing with MOAB-Class Bloons (as well as decent against Ceramic Bloons) as the names of their upgrades imply, but it's underwhelming against everything else.
* DesperationAttack: Bomb Blitz's hidden ability, which [[SmartBomb wipes the screen]] if a life is lost.
* ElementalRockPaperScissors: MOAB Mauler and MOAB Assassin incur massive damage to MOAB-class bloons.
* FlechetteStorm: The Frag Bombs upgrade causes each bomb to shatter into deadly shrapnel. Note that this allows the Bomb Tower to pop Black and Zebra Bloons, which otherwise NoSell its attacks.
* NoSell: While Black/Zebra/D.D.T bloons normally are immune to its blasts, Frag Bombs allows it to damage explosive-resistant enemies nonetheless. While it loses this ability when it upgrades to Cluster Bombs, it regains it with Bloon Impact, which is able to pop explosive-resistant bloons with raw blast power. In addition, MOAB Eliminator can deal damage to Black/Zebra bloons even though it's an explosive.
* RecursiveAmmo: The Cluster Bombs upgrade causes its bombs to split into 8 more bombs upon impact. Beware that this will override Frag Bombs, allowing Blacks/Zebras to NoSell its attacks once more (although the following upgrade, Bloon Impact, allows it to pop Black/Zebra bloons by virtue of its sheer power). Returns in 6, with the next upgrade allowing its recursive bombs to recur again every few shots! It doesn't actually split into more explosions, rather it repeats the main cluster bomb twice. It still does loads of damage.
* ScissorsCutsRock: The Cluster Bombs upgrade (and subsequent Path 3 upgrades) in [=BTD6=] allow the Bomb Shooter to damage Black and Zebra Bloons regardless of cross-pathing. On other upgrade paths, MOAB Eliminator and Bloon Impact provide the same trait.
* SentryGun: It's an autonomous cannon which fires at nearby bloons automatically. ''VideoGame/BloonsPop'' shows that it can talk.
* SmartBomb: Its Bomb Blitz upgrade automatically deals heavy damage, enough to wipe out most bloon types, with a huge series of explosions triggered when a life is lost.
* StatusEffects: Bloon Impact hits bloons so hard that it momentarily stuns them along with damaging them. In ''[=BTD6=]'', Bloon Impact can be upgraded even further to Bloon Crush, which stuns longer and can affect even MOAB-class Bloons.
* ThereIsNoKillLikeOverkill: MOAB Assassin can OneHitKill anything that isn't a ZOMG, a BAD, or a boss, but there's nothing stopping you from using it on normal bloons either. This isn't the case in [=BTD6=], as the ability cannot be triggered if a MOAB class bloon isn't on screen.
* WeaponOfXSlaying: The MOAB Mauler has no special traits outside of dealing significantly more damage to MOAB-Class Bloons than against anything else.
[[/folder]]
[[folder:Super Monkey]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6super.png]]
'''Class:''' Magic
The most expensive but arguably most powerful monkey. Shoots long-ranged darts at, what else, SuperSpeed, and can be upgraded to use powerful EyeBeams.
Its final upgrades in [=BTD5=] are Temple of the Monkey God, which sacrifices nearby towers to increase its power, and Technological Terror, which wields two independently-aimed guns and can create a powerful pulse that annihilates anything in a short radius.
[=BTD6=] allows it to improve the previous paths into the True Sun God and The Anti-Bloon respectively, and also adds the Dark Knight upgrade path, which can pop and knock back any type of bloon (including camos), deals greater damage to MOAB-class bloons, and briefly blocks all damage to your lives whenever a bloon leaks if fully upgraded. With a Monkey Knowledge perk, a fully built True Sun God can sacrifice an Anti-Bloon and Legend of the Night to become a Vengeful True Sun God, one of the strongest individual towers in the entire game.
----
* AllYourPowersCombined:
** The Temple of the Monkey God gains more projectiles depending on how many towers it consumes. If you have a max-sacrifice Temple, it could be firing rockets, buzzsaws, ice blasts, tornadoes, and glue blasts along with its sun beam.
** With an update for [=BTD6=], [[FusionDance There Can Be Only One]].[[note]]A monkey knowledge point allows a hidden transformation for the True Sun God if you fulfil its requirements: maxed out sacrifices for both the Sun Temple and the True Sun God, and have all other Tier 5 Super Monkeys present upon upgrading your temple to True Sun God.[[/note]]
* ArmCannon: The Technological Terror boasts two of these that apparently fire beams of antimatter.
* AttackOfTheFiftyFootWhatever: The True Sun God is absolutely enormous, dwarfing even the temple it uses as a meditation platform.
* AwesomeButImpractical: The Sun Temple in both games it appears in. It's without a doubt the strongest offensive tower in the game, and its sacrifices can make it even stronger and more versatile. However, in order to fund such a temple requires income that can easily win most standard game modes ten times over, and affording a temple is nigh-unfeasable in CHIMPS as you simply don't gain enough money over the course of the game for one. Temples truly shine in freeplay, where the ZergRush of high-tier blimps justifies the cost in investing in one.
* BadassBoast: The Sun Avatar's description in previous games.
-->'''''In [=BTD4=]:''''' ''Legend speaks of a being that fears no bloon.''
-->'''''In [=BTD5=]:''''' ''It is said that bloons dare not touch the sun.''
* TheBigGuy: Super Monkeys are by far the largest of the monkey towers (with the Super Monkey in [=BTD6=] being as large as a house, even!), as well as the tower with the greatest offensive strength.
* BlueIsHeroic: Their default outfits have blue, and they're heroes.
* CaptainErsatz: Super Monkeys are, what else, a monkey ComicBook/{{Superman}}.
* TheCowl: In [=BTD6=], the third upgrade path starting with Dark Knight turn the Super Monkey into a ComicBook/{{Batman}} look-alike.
* CriticalHitClass: The second upgrade path in [=BTD6=], from the Robo-Monkey upgrade onwards, allows the Super Monkey to deal critical hits every few shots (the frequency and damage multiplier increasing with each upgrade).
* CyberneticsEatYourSoul: Bloons Monkey City states that Technological Terrors have lost the last of their monkey biology to become popping machines.
* {{Cyborg}}: Robo-Monkey is half robot. Technological Terror forsakes the last remnant of the monkey.
* EarlyBirdCameo: In [=BTD4] Expansion, the map "Monkey Temple" has a special secret where you can sacrifice a large amount of cash and towers to activate the temple's power, turning it into a powerful tower that can help pop the bloons. The Sun Temple would become a proper tower/upgrade in [=BTD5=] as the Super Monkey's final top path upgrade.
* EyeBeams: Can be upgraded to shoot lasers from its eyes. It can then be upgraded further to fire plasma, then ''sun rays''.
* FluffyTheTerrible: [[https://www.reddit.com/r/NinjaKiwiOfficial/comments/ol9feo/whats_up_at_ninja_kiwi_16th_july_2021/ Frankie Fitzgerald]]. Sounds like a normal name, but it belongs to the Vengeful True Sun God, one of the most powerful towers in the entire [=BTD6=] game.
* GuideDangIt: In BTD 6, the Super Monkey's darts ''look'' just like the basic Dart Monkey's[[note]]which most players will be ''much'' more familiar with due to unlocking it earlier[[/note]], and since they're both just called "darts" by the game, it's intuitive to think they'd have the same in-game properties.
** However, each individual dart thrown by the Super Monkey only pops a ''single'' Bloon before disappearing, unlike the Dart Monkey's [[OneHitPolykill three]][[note]]and you in fact have to upgrade to ''Plasma Blasts'' just to get ''the same'' penetration power out of the Super Monkey's attacks[[/note]].
** This makes the (basic) Super Monkey's damage still impressive against ''single'' targets, given its [[SpamAttack sheer fire rate]], but somewhat underwhelming against crowds of massed Bloons, for a reason that's not immediately obvious from the in-game information alone.
* GunsAkimbo: The Robo Monkey uses a pair of blasters that can target bloons independently.
* HumanSacrifice: The Temple of the Monkey God will sacrifice and consume all towers nearby upon his purchase. However, each tower absorbed will boost his already-staggering power even further.
* HumongousMecha: The Technological Terror, and by extension the Anti-Bloon.
* InfinityPlusOneSword: By far the most expensive tower to buy and even more expensive to upgrade, but boasts impossible firepower. Especially the Sun God upgrade path, as they are the most powerful and the most expensive upgrades to purchase in every game they've appeared in. They even have a sacrifice ability unique to them which increases their powers even more - the True Sun God upgrade costs more than certain Paragon upgrades and is just as powerful (if not more) than them, despite "only" being the final top path upgrade for the Super Monkey.
* InstantDeathRadius:
** The Technological Terror's ability instantly kills any non-ZOMG within its range.
** The Anti-Bloon's variant comes not only with a bigger radius but packs damage even greater than a ''[[NukeEm Tsar Bomba]]''.
* LaterInstallmentWeirdness: The Sun God upgrade was renamed to the Sun Avatar in ''[=BTD6=]'', as a way to differentiate them from the new True Sun God upgrade.
* LogicalWeakness:
** Being gigantic temple structures or a massive PhysicalGod monkey, the Temple of the Monkey God in ''[=BTD5=]'', as well as the Sun Temple and True Sun God in ''[=BTD6=]'', cannot be relocated by the Support Chinook ability.
** Since the Sun Temple feeds on a Legend of the Night in order to become the Avatar of the Vengeful Monkey, the black hole passive ability is lost - this is essentially the lone noticeable disadvantage from the upgrade. Furthermore, the Legend of the Night itself and the Anti-Bloon cannot be obtained again unless the Avatar is sold.
* TheMinionMaster: In ''[=BTD6=]'', a Sun Temple or above with sufficient magic sacrifices will spawn miniature Sun Avatars to fight alongside itself. Aside from its tiny footprint, they're as deadly as the real deal.
* MoneyMultiplier: The Temple of the Monkey God, Sun Temple, and True Sun God can give money at the end of a round with sacrificed Support towers. The amount of money depends on how expensive the sacrifices were.
* MultiShot: Many Super Monkey upgrades increase the amount of shots it puts out through this way, since it's already attacking at near-max speed:
** The Sun Avatar fires 3 sunrays at a time.
** This is the Robo Monkey's entire gimmick, doubling up on its main blast attack.
** Dark Champion dual-wields shuriken blades.
* {{Nerf}}: In '''[=BTD6=]''', the Super Monkey's footprint is much bigger,[[note]]They are roughly the same size as the Monkey Village[[/note]] preventing stacking as many Super Monkeys as you could before.
* OneHitKill:
** The Tech Terror comes with the Bloon Annihilation ability, which instantly fries everything up to BFB bloons within range and deals immense damage to anything that survives. Upgrading it into The Anti-Bloon increases the Annihilation's damage and range.
** The Legend of the Night has a passive ability where it summons a black hole whenever a Bloon is about to leak. The black hole will delete any Bloons that come into contact with it, no matter how strong. Yes, this includes the [[BeyondTheImpossible BAD]], which is immune to any other forms of instant-kill. This comes at the price of not gaining any money from the deleted Bloons, and the ability has a long cooldown before it can activate again.
* OneHitPolykill: While a normal Super Monkey can only pop 1 bloon per dart (although it throws them like a machine gun), the path 1 upgrades increase its pierce to 2, 4, 18, and 50 respectively. Tech Terror can pop up to 7 per shot if fully upgraded.
* PhysicalGod: The Sun God and Temple of the Monkey God. ''[=BTD6=]'' allows it to be upgraded further into the True Sun God, and the weaker Sun God upgrade is renamed Sun Avatar. The True Sun God can even spawn smaller Sun Avatars to attack Bloons.
* ThePowerOfTheSun: The Sun Avatar and Temple of the Monkey God use sunrays to attack, which can pop any kind of bloon except the new [[ResistantToMagic Purple Bloons]] in the case of the Sun Avatar, and even that can be solved with the Monkey Knowledge, "Strike Down The False".
* RedEyesTakeWarning: Technological Terror, the Anti-Bloon, and The Avatar of the Vengeful Monkey have these. Considering how powerful these towers are, the warning should be heeded by the bloons.
* ScissorsCutsRock:
** Even though it's a well-established fact in the franchise that Lead Bloons are immune to sharp projectiles and lasers, Robo-Monkeys in [=BTD5=] could pop Lead Bloons even when they lacked the Plasma Blasts upgrade. This was fixed in [=BTD6=], where it requires said upgrade or Tech Terror to pop Lead Bloons on its own.
** In [=BTD6=] the "Strike down the false" monkey knowledge allows Sun Avatars to pop purple bloons while Sun Temples and the True Sun God can do so by default. The Dark Champion and the Legend of the Night upgrades are also capable of popping all bloon types. The Middle Path Super Monkey is capable of bypassing its resistances as well with the Anti Bloon upgrade, while the Tech Terror can do so as well if it uses the annihilation ability.
* SimpleYetAwesome: The Sun Avatar fires 3 streams of sun energy at the bloons. Not very flashy compared to the temples, but it excels at taking down bloon rushes and getting enough of them will crush even the strongest bloons like they're nothing. A Sun Avatar with Knockback is arguably one of the best towers in 6, as its high pierce coupled with the Knockback and Ultravision upgrades allows it to single-handedly deal with nearly all bloon rushes that can be thrown at it.
* ShoutOut:
** The default look of the Super Monkey is clearly based on ComicBook/{{Superman}} with its blue suit and red cape.
** The visor the Super Monkey gets with the Laser Vision upgrade resembles the one used by ComicBook/{{Cyclops}}.
** The Robo-Monkey upgrade gives the Super Monkey Franchise/RoboCop's helmet.
** The Dark Knight upgrade is based on ComicBook/{{Batman}}, wearing a cowl and throwing batarangs.
* SlowLaser: Its laser and sun-based attacks do move pretty fast, but they're still very clearly not moving at the speed of light.
* SuperStrength: How else could it fire 20 darts a second at a distance that even a missile launcher couldn't hope to surpass?
* SuperpoweredEvilSide:
** The Temple of the Vengeful Monkey, a red-and-black Temple of the Monkey God that transforms from it for a short time through an activated ability unlocked with a Tier 4 Super Monkey Lair. While it only lasts a couple of seconds, it increases its range while [[ThereIsNoKillLikeOverkill massively increasing its already-ludicrous damage output.]]
** In [=BTD6=], if you fulfill certain requirements when upgrading into a True Sun God[[note]]The Sun Temple must have 3 out of the 4 categories of primary, military, magic, and support maxed out of more than 50,000 dollars each, then before upgrading to the True Sun God, have all 4 categories maxed out with both the Anti-Bloon and the Legend of the Night outside of the Temple's range[[/note]], it will transform further into the Vengful True Sun God. It acts the same way as a normal True Sun God, except it's red and black and deals doubled damage with all attacks.
* {{Teleportation}}: In [=BTD6=], the Dark Knight upgrade gives it the ability Darkshift, which allows its to teleport and move a short distance. Upgrading to Dark Champion allows it to teleport anywhere.
* UnderwearOfPower: They're superhero-like towers and they look like they're wearing underwear.
* UnrealisticBlackHole: The Legend of the Night upgrade allows the Super Monkey to summon a black hole when any Bloon is about to leak. It can instantly make any Bloon disappear, no matter how strong (except bosses). On the other hand, it only affects the Bloons and doesn't affect anything else. The Monkeys can stand one inch away from the black hole and suffer no ill effects. The black hole will also disappear after a few seconds.
* WasOnceAMan: Going down the Robo Monkey path transforms the Super Monkey into a killer cyborg, sacrificing their original monkey self in the process. Upgrading them to a Technological Terror is mentioned in Bloons Monkey City to "remove the last vestiges of monkey biology", meaning that Tech Terrors are [[CyberneticsEatYourSoul no longer simian]].
* WeaksauceWeakness:
** In [=BTD5=], for all of its immense power, the Super Monkey has ''no'' normal upgrades that help with Camo Detection. That means that without anything else to fire at, a Tier 3 Super Monkey Lair, or a Monkey Village nearby, a max-sacrifice Temple of the Monkey God will be unable to stop a single Camo Red Bloon passing by (Tech Terror can use Bloon Annihilation to fry it). However, [=BTD6=] adds the Ultravision upgrade which not only allows it to see but ''deal'' extra damage to camo.
** In [=BTD6=], Laser Vision, Plasma Vision, and the Sun Avatar cannot harm purple bloons without the appropriate Monkey Knowledge/external upgrades.
[[/folder]]
!!Towers introduced in Bloons Tower Defense 2:
[[folder:Boomerang Thrower/Monkey]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6boomerang.png]]
'''Class:''' Primary
A mid-ranged tower which shoots piercing boomerangs that can return to it.
Its final upgrades in [=BTD5=] are Glaive Lord, which throws ricocheting glaives and is surrounded by orbiting blades, and Turbo Charge, whose bionic arm has great attack speed and can temporarily be further boosted.
In [=BTD6=], its first two upgrade paths are similar, but it gains the Kylie Boomerang as its third upgrade path. This boomerang flies in a straight line instead of a curve, and can be upgraded with the MOAB Press and MOAB Domination upgrades to deal increased damage and knockback to MOAB-class bloons.
Its Paragon upgrade is the Glaive Dominus, which maintains the orbital blades and throws both streams of ricocheting glaives and long-ranged explosive shots. It also buffs the attack speed of all Primary towers, including Paragons.
----
* AllEncompassingMantle: The Glaive Lord sports a grey one. In 6, this specific color of cloak is given to MOAR Glaives, while the Glaive Lord itself is draped in [[PurpleIsPowerful purple]].
* AllYourPowersCombined: The Glaive Dominus, the Boomerang Monkey Paragon, rapidly fires glaives in a straight line from its mechanical arm, including a slower-firing longer-range throw which can explode and knock back MOAB-class bloons, on top of being surrounded by three orbiting glaives. These attacks combine the traits of the Glaive Lord, Perma-Charge, and MOAB Domination.
* ArtificialLimbs: The Bionic Boomer upgrade replaces its right arm with a mechanical one that can throw boomerangs much faster.
* BattleBoomerang: Uses these to attack, which appropriately return to it. It can be upgraded to throw bladed glaives, fire incredibly fast, or push back MOAB-class Bloons.
* BoomerangComeback: The idea behind the Kylie Boomerang upgrades in ''[=BTD6=]''. While other projectiles can only hit the same Bloon once, the kylie boomerang can hit multiple times. So it can fly past a Bloon, hitting it, then hit it again on the way back.
* BoringButPractical: MOAB Press might look like an unassuming upgrade, especially when compared to other Tier 4 upgrades, but it's incredibly cheap for its tier, and the MOAB knockback can prove to be surprisingly effective, especially with other countermeasures such as MOAB Glue from a Glue Gunner.
* CripplingOverspecialization: The top path upgrades are highly effective at shredding through regular Bloons, but can’t do much against MOAB-classes. This causes them to [[CrutchCharacter fall off later in the game]], especially past round 80, where Super Ceramics with much more HP start spawning.
* MasterOfTheLevitatingBlades: The Glaive Lord has two glaives that permanently revolve around it, tearing through anything they touch. In [=BTD6=], it's improved to have three rotating glaives which start moving really fast whenever Bloons are near. The three rotating glaives become even more deadly for the Glaive Dominus.
* MoreDakka: Turbo Charge, an ability which temporarily gives it a massive attack speed increase. In ''[=BTD6=]'', the Perma-Charge upgrade permanently grants the Boomerang Thrower the massive speed boost, while [[DiscardAndDraw giving it another ability that increases damage instead]].
* OneHitPolykill:
** The Boomerang Thrower by default can pop 4 bloons (3 before ''[=BTD6=]''), but this can be upgraded to 7, and then 18.
** The Glaive Lord upgrade gives the Boomerang Thrower three rotating glaives with an incredibly high pierce, being able to pop up to 8000 bloons at the same time, per glaive.
* PinballProjectile: The Glaive Ricochet upgrade allows glaives to bounce between bloons.
* PlayingWithFire: Its Red Hot Rangs upgrade sets its projectiles on fire, allowing them to melt Lead Bloons.
* PrecisionGuidedBoomerang: The boomerang it throws has a curved trajectory, and hitting Bloons won't change its path. It only disappears when it has hit enough Bloons. The Glaive Ricochet upgrade changes it into a throwing glaive that [[{{Roboteching}} can seek another target after it hits a Bloon]]. The Kylie Boomerang even allows the Boomerang to hit the same Bloon multiple times while midair.
* VibroWeapon: The Sonic Boom upgrade is implied to turn its boomerangs into this, allowing them to shatter Frozen bloons.
[[/folder]]
[[folder:Road Spikes (Road Item)]]
'''Class:''' Power
A deployable hazard that lays on the path and pops bloons that run into it. Each pile of Road Spikes can pop 10 or 11 bloons.
----
* BoringButPractical: A cheap, spammable source of instant damage: yet they can be used to fend off early rushes or even be spammed in the late game to get a bit more damage on MOAB-class bloons.
* CrutchCharacter: For a certain definition of "character". Road spikes can be useful for saving you some lives, but they can't pop enough bloons to recoup their price, so relying too much on them will end up costing you money that could have gone towards more permanent towers and upgrades, crippling your late-game defense.
* DemotedToExtra: In ''[=BTD6=]'', it's only available as a Power purchasable with Monkey Money or in Geraldo's shop.
* SpikesOfDoom: Well, they're just a pile of tacks, but still.
[[/folder]]
[[folder:Monkey Glue/Glue Trap (Road Item)]]
'''Class:''' Power[[note]]As the Glue Trap[[/note]]
A deployable hazard which lies on the path, slowing down bloons that run into it. Each glob of Monkey Glue can slow down 20 bloons before wearing out.
----
* TheArtifact: Bloons TD 4 kept it as an item, despite introducing the Glue Gunner, which fulfilled much the same role. It was later removed from [=BTD5=], and only returned in [=BTD6=], as the Glue Trap.
* BoringButPractical: It's not flashy and doesn't do any direct damage, but it's a great way to slow down the huge rushes of Yellow, Black, and White Bloons in its debut game.
* DemotedToExtra: In [=BTD6=], it's only available as a Power purchasable with Monkey Money or in Geraldo's shop.
* StickySituation: It slows down the first 20 bloons that come into contact with it by gumming them up with glue. {{Exaggerated|Trope}} in [=BTD6=], where it glues up to ''300'' bloons at a time.
* TookALevelInBadass: The Glue Trap glues 15 times as many bloons as the old Monkey Glue, and with [[TechTree Monkey Knowledge]], it even works on [=MOABs=].
[[/folder]]
!!Towers introduced in Bloons Tower Defense 3:
[[folder:Spike-o-pult]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/5e72aaa7_42c9_4d4e_b03a_665b5b2825dc.png]]
'''Class:''' "Primary"[[note]]It only appears in ''[=BTD4=]'' onward as a Dart Monkey upgrade.[[/note]]
A tower which launches spiked balls down the track, able to pop a lot of bloons with a single shot. It's only available as its own tower in ''[=BTD3=]'', as it was turned into an upgrade for the Dart Monkey starting with the fourth game.
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* DemotedToExtra: Or rather, demoted to upgrade. In ''[=BTD3=]'', it was its own tower, with its own set of upgrades. This didn't last, as in later games, it's turned into an upgrade for the Dart Monkey.
* MultiShot: Can be upgraded to shoot three projectiles at the same time. Or at least that's what it says; in practice, it makes the projectile bigger to make it easier to hit bloons.
* OneHitPolykill: Can pop up to 6 bloons per shot, which can be increased to 20 with the Juggernaut upgrade.
* SpikeBallsOfDoom: Its projectile consists of large, powerful spiked balls that crush bloons in their way.
[[/folder]]
[[folder:Pineapple (Road Item)]]
'''Class:''' None[[note]]It only appears in [=BTD6=] as a Monkey Ace upgrade.[[/note]]
A deployable hazard which lies on the path for 5 seconds before exploding violently.
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* AwesomeButImpractical: While it sure looks cool, it requires precise timing to even hit targets, and if it does it only takes off one layer, as opposed to the Road Spikes which are far easier to use and take off 11. However, they can be used to deal with Leads if your defense isn't built up enough yet. The Mobile versions of ''[=BTD5=]'' and its spinoffs {{nerf}} the blast radius of the pineapple pretty hard, making it even tougher to hit those random leads in the former and ''Videogame/BloonsMonkeyCity''. Although ''Videogame/BloonsTDBattles'' has no placeable pineapples, the above still applies to the pineapples dropped by the Monkey Ace.
* DemotedToExtra: In ''[=BTD6=]'', it's no longer usable as a road item, and is only available as an upgrade for the Monkey Ace.
* LandMine: Functions as one for Bloons.
* {{Nerf}}: In its debut game, it's able to take off multiple bloon layers if they're close to the center of the explosion. Later games make it so the explosion only does one layer's worth of damage no matter what.
* StuffBlowingUp: [[ExactlyWhatItSaysOnTheTin An explosive pineapple]].
[[/folder]]
[[folder:Monkey Beacon/Monkey Village]]
[[quoteright:333:https://static.tvtropes.org/pmwiki/pub/images/btd6village.png]]
'''Class:''' Support[[note]]As the Monkey Village[[/note]]
A little beacon that boosts the power of all towers within its radius. Its final upgrade lets it activate the [[SmartBomb Super Monkey Storm]].
In ''5'', it became the Monkey Village. Its final upgrades lets it either attack bloons with a powerful laser while decreasing the ability cooldown of all towers in its radius, or massively buff the damage and attack speed of towers while allowing them to damage any bloon type.
In ''6'', its final upgrades cause it to make the 1st and 2nd tier upgrades of all Primary monkeys free while adding a ballista attack of its own [[note]]Primary Expertise[[/note]], make its ability affect ''every'' tower on screen[[note]]Homeland Defense[[/note]], or cause it to absorb all Banana Farms in its range and generate its own income[[note]]Monkeyopolis[[/note]].
----
* ArmorPiercingAttack: The Monkey Intelligence Bureau upgrade grants all towers in range the ability to pop any bloon type with their attacks, even bloons that would normally be immune to them.
* DrumsOfWar: The Jungle Drums upgrade buff nearby towers, making them attack faster.
* EarlyInstallmentWeirdness: In ''3'' and ''4'', it's a rather modern beacon, while in ''5'' and ''6'' it becomes the Monkey Village, depicted as a hut made of straw (in its base form, at least).
* FunWithAcronyms: The M.I.B. upgrade stands for Monkey Intelligence Bureau. Fittingly, the icon in ''6'' is a monkey dressed in black suit and sunglasses, or in other words, a [[TheMenInBlack Monkey in Black]].
* JungleDrums: The appropriately named Jungle Drums upgrade, which fits with the jungle hut appearance of the unupgraded Village. You never hear the actual drums, though, and it functions as a buff to nearby towers.
* MoneyMultiplier: The Monkey Town upgrade lets nearby towers get more cash for each pop. The Monkeyopolis upgrade absorbs all nearby Banana Farms and start generating its own money.
* {{Roboteching}}: Its [[DeadlyDisc Mega Ballista]] attack in ''6'' shoots a projectile that can change directions midway in order to chase bloons.
* SupportPartyMember: Can't attack, but makes other towers in its range more powerful and cheaper. However, each game has a powerful weapon as a final upgrade, starting with a one-shot Super Monkey Storm in 3 and 4, a laser in 5, and a homing DeadlyDisc in 6.
[[/folder]]
!!Towers introduced in Bloons Tower Defense 4:
[[folder:Glue Gunner]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6gluer.png]]
'''Class:''' Primary
A mid-ranged support tower which fires globs of glue at bloons, greatly slowing their movement speed.
Its final upgrades in ''[=BTD5=]'' are Bloon Liquefier, which deals high damage over time to splattered bloons, and Glue Striker, which attacks at a vastly increased rate and can rain glue onto all bloons on-screen.
''[=BTD6=]'' adds a new upgrade path which can affect MOAB-class bloons with MOAB Glue, cause popped bloons to release a stunning splatter with Relentless Glue, and temporarily immobilize affected bloons outright with Super Glue. The previous two paths are also upgraded into The Bloon Solver, which deals tremendous damage over time while leaving behind hazardous glue puddles, and Glue Storm, which also increases the damage taken by bloons hit.
----
* AreaOfEffect: The Glue Splatter upgrade allows his shots to explode, gluing up to 6 bloons (20 in [=BTD4=]) in one hit.
* BalanceBuff: Gained the ability to damage (and, in one upgrade path, slowdown) MOAB-class bloons in [=BTD6=], making it not completely useless in the late-game.
* CripplingOverspecialization: The top path upgrades can melt even the toughest regular bloons in seconds, but are almost helpless against MOAB-class bloons.
* CrutchCharacter: In ''[=BTD4=]'' and ''[=BTD5=]'', Glue Gunners provide effective support against regular bloons for a good price, especially with their Glue Splatter upgrade. However, they can't touch MOAB-class bloons and can't slowdown Ceramic Bloons (though they can damage them), which causes them to become more and more irrelevant as the game progresses. Not the case in ''[=BTD6=]'', however, where each of the paths has something to offer in the late-game.
* DamageIncreasingDebuff: Starting from ''6,'' the Glue Storm ability will cause all bloons on the screen to take increased damage while the ability is active.
* DamageOverTime: The Corrosive Glue and its upgrades pop affected bloons gradually. It starts off slowly, only dealing 1 damage every two seconds (barely enough to overcome the healing of a Regrowth Bloon), but it quickly ramps up until The Bloon Solver can deal 90/60 damage per second to Ceramics and MOAB-Class Bloons.
* DeathFromAbove: Its Glue Striker ability rains glue from above.
* HazmatSuit: Any Glue Gunner with at least one Tier 2 upgrade will have one. Depending on the upgrade path chosen for Tier 3, the headgear will either be a sealed hood and gas mask (Bloon Dissolver and Bloon Liquifier), a balaclava with spectacle goggles (Glue Hose and Glue Strike), or a hazmat helmet with an opaque visor (MOAB Glue and Relentless Glue).
* HollywoodAcid: The Corrosive Glue and its following upgrades (Bloon Dissolver and Bloon Liquefier) can eat through bloons, with the latter two doing so at a ridiculous speed. Fittingly enough, the glue turns green when you get them.
* MagikarpPower: Slowing bloons down is not a particularly useful skill if you can just pop as many as you can. However, upgrading it can enhance the glue to near-instantly melt through regular bloons, cause glued bloons to take more damage, or even heavily slow down MOAB-classes as well.
* {{Nerf}}: In [=BTD4=], the Glue Splatter upgrade let the Glue Gunner coat up to 20 bloons with glue at once. From [=BTD5=] onwards, it was reduced to just 6.
* OvershadowedByAwesome: The Bloon Solver is a very effective upgrade when it comes to melting even Super Ceramics and lesser MOAB-Class Bloons, but it's heavily outclassed by The Biggest One, a tower with a similar purpose, but that can damage a lot more Bloons at once and destroy Super Ceramics faster, leaving a slightly cheaper cost and the slowdown as the only aspects in which The Bloon Solver is better.
* StickySituation: The Glue Gunner's entire purpose is to use sticky glue to slow down enemies.
* SupportPartyMember: Without Corrosive Glue (or MOAB Glue when targeting MOAB-Class bloons), a Glue Gunner can't deal damage and can only use its glue to slow down foes. Even with Bloon Liquefier, it still possesses incredibly weak attack power against MOAB-class bloons.
* YouAreAlreadyDead: Any standard bloon hit by the Bloon Liquifier is as good as dead, it'll just take a while for it to pop. The Bloon Solver does so much damage to ceramic bloons that even [[EliteMooks fortified super ceramics]] in late game rounds won't survive.
[[/folder]]
[[folder:Monkey Ace]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6ace.png]]
'''Class:''' Military
A unique tower that orbits its runway in a set path, firing 8-directional bursts of darts every now and then.
Its final upgrades in ''[=BTD5=]'' are Spectre, which rapidly fires darts and missiles directly at bloons, and Ground Zero, which shoots homing darts and can drop a powerful bomb that massively damages all on-screen bloons.
''[=BTD6=]'' changes up the upgrade paths. The first path, the Fighter Plane, fires more darts and targets MOAB-class bloons with powerful missiles, and gains the Operation: Dart Storm ability that once belonged to the Spectre path, with the final upgrade being the Sky Shredder which fires rings of darts everywhere. The Bomber Ace path drops many small bombs whenever it passes over the track, and gains the Ground Zero ability which can be upgraded to the even bigger Tsar Bomba. The Spectre is moved to the Neva-Miss Targeting path, and has the Flying Fortress final upgrade which triples its already insane firepower.
Its Paragon upgrade is the Goliath Doomship, which rapidly fires both straight and homing missiles in all directions along with a powerful frontal gun, and can coordinate nuclear bombing runs with its ability.
----
* AllYourPowersCombined: Its Paragon, the Goliath Doomship, fires rings of missiles in all directions, salvos of homing anti-MOAB missiles, and two streams of darts from its frontal guns, while also gaining an activated ability that calls in mini-planes to carpet bomb a set path on the map, dealing damage in the ''tens of thousands at minimum'' and stunning non-BAD targets that survive - combining aspects of the Sky Shredder, Tsar Bomba, and Flying Fortress.
* BallisticBone: In ''[=BTD6=]'', an unlockable cosmetic option during Halloween replaces the Ace's darts with sharpened bone fragments.
* CoolPlane: Depending on which upgrades are selected, the appearance can go from the basic biplane to planes that resemble cooler aircraft, including:
** A Supermarine Spitfire for thr Fighter Plane upgrade.
** A De Havilland DH.98 Mosquito for the Ground Zero upgrade.
** An AC-130 Gunship for the Spectre upgrade.
** A B2 Spirit Stealth Bomber for the Operation: Dart Storm upgrade.
** A TU-95 Bear Bomber for the Tsar Bomba upgrade.
** A Kalinin K-7 Bomber for the Flying Fortress and Goliath Doomship upgrades.
** A mix between the American B2 Spirit Stealth Bomber and the Chinese J-20 Wēilóng Stealth Fighter for the Sky Shredder upgrade.
* DeathFromAbove: While the Monkey Ace in general could be placed firmly under this trope, it has the ability to periodically drop Explosive Pineapples with the Pineapple Present upgrade. The Bomber Ace upgrade in ''6'' replaces the pineapples with a more powerful stream of bombs. Then of course, there's the Ground Zero/Tsar Bomba ability, which drops a nuclear bomb.
* DepthPerplexion: The Ace is presumably flying high over the battlefield, and its darts aren't aimed downwards (as they can pass through the bloons without hitting the ground), yet it can pop them despite the fact that the darts should just be passing over its targets.
* EarlyInstallmentWeirdness: In its debut appearance in 4, the Monkey Ace was able to be placed anywhere on the screen, as it didn't have an actual footprint. This made selecting one to upgrade it difficult as you had to click the Ace itself. All further appearances of the Ace require placing down its runway first, limiting the amount of Aces one can have per level, but making managing the Ace much easier.
* FlechetteStorm:
** Operation: Dart Storm and Ground Zero can fire massive storms of darts with each volley. Spectre, however, uses an unyielding, aimed stream of darts and grenades.
** Dart Storm's fifth-tier variant, Sky Shredder. Twice as many darts that fly twice as fast, shoot twice as often, and do over 3 times the damage.
* GrenadeSpam: Spectre spams deadly bombs along with its aimed dart stream. Bomber Ace is no slouch in this department either; position it properly and give it the Rapid Fire upgrade, and it'll carpet-bomb the track around it.
* HomingProjectile: The Neva-Miss Darts upgrade causes its darts to home in on foes.
* MacrossMissileMassacre: The Goliath Doomship replaces the darts it normally fires with lots and lots of missiles.
* MagikarpPower: A Monkey Ace is relatively costly while also being rather weak. Although it fires eight darts at a time with high pierce in its base state, most of its shots will miss due to how it flies around and shoots all around itself, so its damage potential is not very high. However, once you buy higher-tier upgrades, it starts to make up for this weakness via sheer projectile count, darts that follow bloons or are aimed at them, or the powerful ability to drop a huge screen-wiping bomb.
* MechanicallyUnusualClass: Monkey Ace is the first of two moving towers in the series, flying around in a preset path and firing either at set intervals or at the closest bloons.
* MoreDakka: The Spectre upgrade turns the Ace into a rapid fire gunship that launches many bombs and darts towards Bloons. The Flying Fortress gets ''two more'' of these.
* MultiDirectionalBarrage: Fires 8 darts in a ring around it. Lots More Darts upgrades this to 12 and Operation: Dart Storm to 16, before Sky Shredder increases it to ''32''.
* {{Nerf}}: It was given a footprint (in the form of a runway) in ''[=BTD5=]'' to prevent the near-infinite stacking of Monkey Aces that could be performed in the previous game.
* OneHitPolykill: Each of its darts can pop 15 bloons to make up for their generally low hit rate.
* ThereIsNoKillLikeOverkill: Even in a world of over-the-top weapons, Ground Zero still stands out for letting you '''drop a nuclear warhead''' in order to pop a couple balloons.
* YouNukeEm: Ground Zero lets you ''drop a nuke on the bloons''... and the Tsar Bomba upgrade lets you drop an even bigger nuke on them. The Goliath Doomship's ability ''carpet bombs'' the target path with mini-nukes.
[[/folder]]
[[folder:Mortar Tower/Mortar Monkey]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6mortar.png]]
'''Class:''' Military
[[MechanicallyUnusualClass A strange tower which has infinite range and targets a set area with periodic, explosive mortar strikes]]. Its final upgrades in [=BTD5=] are The Big One, which shoots shells with large explosions, and Artillery Battery, which shoots three times as fast with an ability to stun the entire screen.
In [=BTD6=], the top path is relatively unchanged, with the addition of The Biggest One as its final upgrade. The second path focuses on attack speed, resulting in Artillery Battery again, but with some lower upgrades replaced. Those replaced upgrades are the basis for the bottom path, which focuses on debuffs and DamageOverTime, with the final upgrade Blooncineration dealing massive burn damage while leaving behind pools of fire.
----
* DamageOverTime: The Burny Stuff upgrade lets the Bloons it hit be set on fire, dealing minor damage over time. The Blooncineration upgrade as well as the last three top path upgrades greatly increase the amount of damage dealt.
* DeathFromAbove: The Pop and Awe ability calls in a hail of explosives to bombard the entire screen, dealing massive damage and immobilizing everything hit.
* GrenadeSpam: Artillery Batteries triple the fire rate of the Mortar Monkey, barraging the target location with countless shells. Their Bombardment ability momentarily [[MoreDakka quadruples their fire rate]].
* InjuredVulnerability: The Heavy Shells upgrade causes its shells to deal bonus damage against both armored and stunned Bloons, and its final upgrade Pop and Awe significantly boosts its damage against stunned targets in particular. This synergizes with its ability, which stuns every Bloon on the screen.
* MechanicallyUnusualClass: Mortar Towers were the first towers with adjustable aiming, since their reticles can be set to any point on the map for them to launch strikes at.
* NukeEm: The last few upgrades in the top path boast radiation symbols on their cannons, implying their shells are literally nuclear in nature. Fittingly, they forgo other gimmicks like rapid fire or debuffs in favor of massive explosions that deal severe damage in a huge area.
* PlayingWithFire: The Mortar Tower's bottom path allows it to set bloons on fire. The Blooncineration upgrade massively boosts its burn damage and lets its shells leave pools of fire on impact.
* PowerNullifier:
** Signal Flare allows a Mortar Tower to permanently remove camo from bloons hit by its blasts.
** The Shattering Shells upgrade allows the mortar to remove ''all'' special bloon properties off bloons it hits, including the Fortified Property off of bloons up to [=BFBs=]! The Paint Stripper Monkey Knowledge allows this upgrade to also remove camo from [=DDTs=].
** The Blooncineration upgrade allows the Mortar Tower to remove all properties off [=DDTs=].
* ShockwaveStomp: The Shell Shock upgrade causes each shell to release a larger blast wave on impact, dealing additional damage and stunning Bloons too close to the impact site.
* StuffBlowingUp: Specializes in this. It even comes in three distinct flavors, with heavy nuclear shells in the first path, rapid-fire shells in the second path, and crippling incendiary shells in the third path.
* WeaponOfXSlaying: Downplayed with the Artillery Battery and Pop and Awe upgrades. Both upgrades give the Mortar extra damage against [=BADs=] and Boss Bloons, an otherwise exclusive ability to the Paragon towers, with Pop and Awe also giving an extra bonus for all other Artillery Batteries.
[[/folder]]
[[folder:Monkey Apprentice/Wizard Monkey]]
[[quoteright:285:https://static.tvtropes.org/pmwiki/pub/images/btd6wizard.png]]
'''Class:''' Magic
A mid-ranged tower who uses magic blasts. They will gradually learn more spells to add to their attacks as they level up.
Its final upgrades in ''[=BTD5=]'' are Tempest Tornado, which blows bloons back to the entrance, and Summon Phoenix, which summons a fire-breathing bird to roast bloons.
''[=BTD6=]'' renames it to the Wizard Monkey. Though the fire upgrade path remains with a few changes, the air path is gone, being given to the Druid instead. The Archmage path focuses on improving the Wizard's basic magic bolt, increasing its range, speed, and power against [=MOABs=], with the final upgrade adding the Dragon's Breath and Shimmer abilities of the other paths. The Necromancer path allows the Wizard to remove camo from bloons and summon undead bloons that float in reverse and damage enemy bloons on contact, with the tier 5 ability upgrading it to zombie [=MOABs=] and [=BFBs=].
Its Paragon upgrade is the Magus Perfectus, which utilizes a StanceSystem with two modes: one that uses a comparatively weak laser beam that builds up a pool of mana, and one that constantly consumes its mana to fire powerful attacks and summon a Dark Phoenix to decimate Bloons if it has enough mana. It also has two abilities that consume all of its mana to use: Phoenix Explosion ignites all bloons for massive damage while summoning zombie [=ZOMGs=] proportional to the amount of mana consumed, while Arcane Metamorphosis sacrifices the Dark Phoenix to temporarily transform the Magus into a super-powered phoenix form, with the duration scaling with the amount of mana the Magus had at the time of use.
----
* ActionBomb: The Paragon Phoenix can be commanded to explode using the [[ExactlyWhatItSaysOnTheTin Phoenix Explosion ability]], which does massive damage and ignites bloons near the phoenix. Of course, since it's a phoenix, [[BackFromTheDead it comes back]] none the worse for wear.
* AllYourPowersCombined: Its Paragon, the Magus Perfectus, charges up graveyard mana using a draining beam and uses it to power Arcane Spikes and a Dark Phoenix to decimate the bloons and resurrect them as minions. It can also consume it all to ignite all bloons and resurrect an army of zombie [=ZOMGs=], or consume its mana and Phoenix to enter a Phoenix SuperMode that uses jets of flame that leave walls of fire. This skillset combines all of the best aspects of the Archmage, Wizard Lord Phoenix, and Prince of Darkness.
* TheArchmage: Becomes one with its final top path upgrade in ''[=BTD6=]''. It's such an expert in magic that it can cast [[AllYourPowersCombined Shimmer and Dragon's Breath]] despite the fact they can't be purchased alongside the Archmage upgrade path.
* BlowYouAway: The Air path in ''[=BTD5=]'' can summon a tornado to blow away bloons.
* BoringButPractical: In [=BTD6=], the top path focuses on improving its basic attack without adding new ones. Certainly not as flashy compared to summoning undead bloons or phoenixes to fight for you, but a top path monkey wizard is a solid general option against anything that isn't a purple bloon.
* CastingAShadow: In ''[=BTD6=]'', the bottom path focuses on dark magic, spreading a dark aura that removes camo property and summoning undead Bloons.
* CoolChair: The Prince of Darkness, the third path tier 5 Wizard, is depicted as sitting on a throne. He doesn't even turn when shooting at Bloons.
* DarkIsNotEvil: The Necromancer path Wizards dabble with necromancy, look imposing, and wear dark clothings. However, they're still fighting alongside other monkeys.
* DecompositeCharacter: The Wizard Monkey from ''[=BTD6=]'' kept the second path upgrades from the Monkey Apprentice from the previous game, whereas the top path upgrades went to the Druid instead.
* DifficultButAwesome: The Magus Perfectus is a very hands-on Paragon, and demands careful management of its StanceSystem and ManaMeter to maintain the effectiveness of its attacks, as well as timing when to consume all the mana to use one of its abilities while accounting for the period of relative weakness after. However, with sufficient micro, the Magus can become a powerhouse even by Paragon standards, and has multiple ways to totally eradicate even the toughest foes.
* DoNotTouchTheFunnelCloud: The 3/x and 4/x upgrades in ''[=BTD5=]'' allow the wizard to launch tornadoes to blow back and even pop bloons. Said tornadoes only affect bloons they touch.
* GatheringSteam: How the Necromancer path works. When nearby Bloons are popped, the Necromancers store them in their "graveyard". Summoning undead Bloons remove them from this graveyard. This means they generally need to pop Bloons with their other attacks (or have nearby allies that can pop Bloons) before they can start summoning undead Bloons. Once they do, however, the undead army can usually pop enough Bloons to keep the graveyard full by themselves.
* GirlsWithMoustaches: According to [[https://www.reddit.com/r/NinjaKiwiOfficial/comments/17mgtnb/whats_up_at_ninja_kiwi_3rd_november_2023/ this]] blog by Ninja Kiwi, all Wizard Monkeys can grow beards regardless of gender since said beards can be created with magic.
* HotWings: Summon Phoenix conjures up a massive [[BreathWeapon fire-breathing]] phoenix that circles the screen for 20 seconds, doing heavy damage to whatever it hits. ''[=BTD6=]'' lets the Wizard himself transform into a much more powerful Lava Phoenix, which, in addition to stronger fire breath, also shoots highly damaging meteors; the standard phoenix will also permanently stick around when the Wizard Lord Phoenix upgrade is purchased.
* LightningWindJuxtaposition: In ''BTD 4'' and ''5'', one of his upgrades allows him to summon tornadoes and the next level upgrade electrifies the tornadoes he summons. In ''BTD 5'', he also has an upgrade allowing him to shoot lightning bolts before the tornado upgrade.
* MagmaMan: The Wizard Lord Phoenix's eponymous transformation appears to have a body made of lava, as seen on its tail.
* MasterOfAll: The Archmage can use abilities from all three crosspaths (Arcane Spikes, Dragon's Breath and Shimmer) when that's normally not possible.
* {{Necromancer}}: The final bottom-path upgrades on [=BTD6=] allow Wizard Monkeys to summon undead bloons to damage any living bloon on their path. With the Prince of Darkness upgrade, it can summon undead blimps (up to [=BFBs=]) as well. Magus Perfectus improves on this to summon undead [=ZOMGs=].
* {{Nerf}}: In ''[=BTD6=]'', the Wizard Monkey's starting attacking type was changed from plasma to energy, meaning it cannot pop Lead bloons unless supported by other towers or upgraded.
* PlayingWithFire: One upgrade path focuses on fire magic. It can shoot fireballs, spray a stream of flames, and summon a phoenix.
* TheRedMage: Archmage's ability to cast powerful arcane bolts, Dragon's Breath, and Shimmer at the same time embodies this, since otherwise these abilities are otherwise on mutually exclusive paths. The same applies to Magus Perfectus.
* ShockAndAwe: One upgrade in ''[=BTD5=]'' fires a bolt of electricity which arcs between bloons.
* SimpleYetAwesome: The first upgrade path in ''[=BTD6=]'' simply focuses on enhancing the basic magic bolt, to devastating effect.
* WizardClassic: The top path upgrades in ''6'' gives the Wizard Monkey a pointy hat, a long robe, a magical staff, and a long white beard.
[[/folder]]
[[folder:Monkey Buccaneer]]
[[quoteright:349:https://static.tvtropes.org/pmwiki/pub/images/btd6buccaneer.png]]
'''Class:''' Military
A long-ranged tower that can only be placed on water, and targets bloons with rapid, heavy darts.
Its final upgrades in ''[=BTD5=]'' are Aircraft Carrier, which sends out miniature Monkey Aces that shoot and spray darts while flying, and Monkey Pirates, who have an independently firing cannon on their ship and can instantly take down the strongest bloon on-screen.
In ''[=BTD6=]'', the Monkey Buccaneer can fire simultaneously from both sides of the ship. In addition to keeping and improving the previous two paths with the Carrier Flagship and Pirate Lord, it also adds the Merchantman upgrade path, which focuses on income generation by making extra money at the end of each round.
Its Paragon upgrade is the Navarch of the Seas, which unleashes curtains of gunfire while commanding three fighter jets to bombard bloons with missiles, and can automatically hook any non-BAD blimps that enter the screen for an instant kill, or manually hook ''any non-boss target'' up to twice per round. It also retains its income generation and buff to water monkeys and Aces, notably being able to buff the attack speed of the Goliath Doomship.
----
* AllYourPowersCombined: Its Paragon, the Navarch of the Seas, rapidly fires upgraded darts and bombs from its six cannons, releases 3 planes to attack the Bloons with streams of darts and anti-MOAB missiles, constantly [[OneHitKill hooks in and instakills]] all MOAB-Class Bloons (up to [=ZOMG=]s) that appear on-screen, gains an activated ability that is able to hook in any (''yes, ANY'') MOAB-Class Bloon, generates tons of money after every round, buffs all Monkey Aces and water towers and allows you to place down two other towers on its upper decks - combining all of the best aspects of the Carrier Flagship, Pirate Lord and Trade Empire.
* CoolBoat: Its final upgrades, especially the aircraft carrier. In [=BTD6=], the Carrier Flagship upgrade is so big that you can actually put two smaller towers on top of it.
* DressedToPlunder: As a base tower, it wears the classic bicorne hat, but going into the Cannon Ship path gives it more pirate gear like an EyepatchOfPower and HookHand, and even a golden tooth!
* EdibleAmmunition: The Grape Shot upgrade lets the buccaneer shoots sharpened grapes. It can also be upgraded to Hot Shot, which sets the grapes on fire.
* GrenadeSpam: Cannon Ships can fire cannonballs much faster than you'd expect. It gets even more outlandish with its upgrades, as the Pirates and Pirate Lord can be rapidly firing up to six cannonballs at a time without slowing down.
* IntrepidMerchant: The aptly-named Merchantman path introduced in 6 allows Buccaneers to double as end-of-round money generators.
* TheMinionMaster: The Aircraft Carrier upgrade gives the ship three mini-aircraft that can travel anywhere in the map and shoot at Bloons.
* MoneyMultiplier: The Merchantman path in ''[=BTD6=]'' sacrifices firepower in exchange for granting bonus money at the end of each round.
* NecessaryDrawback: The Monkey Buccaneer is both strong and cost-effective, but is balanced out by being one of two towers that can't be placed on land.
* {{Nerf}}: Due to the reordering of the various upgrades, in [=BTD6=], you cannot have a Destroyer[[note]]Massive speed increase[[/note]] with Grape Shot[[note]]Allows hitting of multiple bloons at once[[/note]] and Crow's Nest[[note]]Allows the buccaneer to hit camo bloons[[/note]].
* OneHitKill: The Monkey Pirates have the MOAB Takedown ability, which instantly takes down the strongest bloon on the map, excluding [=ZOMGs=] (and unlike similar abilities that instantly destroy MOAB-Class bloons, this one does not leave any child bloons on the track). It can be further improved with the Pirate Lord to target up to three [=MOABs=] (or a ZOMG plus a MOAB, BFB or DDT) and grants extra money for each one. The Navarch of the Seas Paragon upgrade takes it even further with its manually activated harpoon as it can take down a BAD from full health in a single hit (the only other tower that could do this at the time, the Legend of the Night, specifically requires the BAD to be about to leak) albeit only twice per round, while it has secondary harpoons that work exactly like the Pirate Lord upgrade (except they are used automatically).
* ThePiratesWhoDontDoAnything: The Monkey Pirates don't really do anything pirate-y other than gaining the ability to plunder [=MOABs=].
* {{Privateer}}: The basic Buccaneer before going down any specific path resembles a pirate, but wasn't specifically identified as such. It's only after going down the Pirate path do they get called that.
* SpreadShot: The Grape Shot upgrade lets the Buccaneer shoot grapes in a fan-shaped spread.
* SupportPartyMember: The Carrier Flagship passively buffs the attack speed of all aquatic towers and Monkey Aces.
[[/folder]]
[[folder:Banana Farm]]
[[quoteright:326:https://static.tvtropes.org/pmwiki/pub/images/btd6farm.png]]
'''Class:''' Support
A special tower which does not attack, but instead produces bananas that can be collected for cash.
Its first upgrade path in ''[=BTD5=]'' focuses on increasing money earned by picking up bananas with the Banana Republic and Banana Research Facility upgrades. The second path turns the farm into a Monkey Bank, removing the need to manually pick up every banana and adding interest to the cash stored inside.
''[=BTD6=]'' grants the Monkey Bank path the ability to take out a $10,000 loan which must be repaid, and can be upgraded to Monkey-nomics which simply gives you the money rather than lending it. It also adds the Marketplace path, which removes the need to pick up bananas yourself and provides support buffs to Merchantmen Buccaneers, and can be upgraded to Monkey Wall Street which generates tons of money and lives and auto-collects bananas from other farms nearby.
----
* BoringButPractical:
** Does absolutely no damage, but is vital to most strategies since it allows you to afford more upgrades for your other towers.
** The third path upgrades in ''[=BTD6=]'' don't generate as much money per round like the first path, nor allows you to get a massive instant cash injection as in the second, but they give consistent amounts of money, don't require any kind of player intervention to collect the money (the first path needs manual collection or Monkey Farmers before the bananas expire, and the second path does not give you the money until you collect it), and can boost the income of the similarly reliable Merchantmen.
* EarlyInstallmentWeirdness: In ''[=BTD4=]'', Banana Farms did not actually produce bananas during the round, and instead merely gave you money at the end of it. The next game would give the Banana Farm the ability to throw bananas into the battlefield (and making you pick them up), with the "money at the end of the round" ability only returning in ''[=BTD6=]'' for the Banana Farm's final Path 3 upgrade, Monkey Wall Street, as well as the Monkey Buccaneer's main Path 3 upgrades.
* HealingFactor: Banana Farms in 5 and 6 gain the ability to restore lives; however this feature is locked behind a Premium upgrade in the former, and a Monkey Knowledge in the latter. Monkey Wall Street on the other hand always generates lives after every round.
* MoneyMultiplier: The purest example in the game, as it does nothing except give you money. All its upgrades are just different flavors of making more money, from raw income generation, to interest-based money storage. The Central Market and Banana Central, more literally, increase the income generated by other towers (Banana Research Facilites and Merchantmen/Trade Empire, respectively), and a Banana Farm's presence within range increases the money generated by a Jungle's Bounty druid.
* SupportPartyMember: The only tower with no offensive capabilities whatsoever. Makes up for it in cash gain.
** The bottom-path farm in ''6'' is more focused on this, weirdly enough. The third tier, Marketplace, removes the "collect bananas" mechanic entirely, instead directly increasing your money count with each tick[[note]]This makes marketplaces a simple "set it and forget it" way to gain income while you focus on other towers[[/note]]. Central Market ups the income, and also increases the value generated by Merchantmen Monkey Buccaneers; a useful addition to the Trade Empire. Lastly, Monkey Wall Street gains the ability to automatically collect bananas and crates ''for you'', making them a great companion to top-path farms, Supply Drop snipers and Support Chinooks, and even Bloon Trap engineers.
* UselessUsefulSpell: Until ''[=BTD6=]'''s Version 2.0 patch, it was possible to place Banana Farms in C.H.I.M.P.S. mode, even though income generation is disabled and thus made Banana Farms completely useless. It's still possible to do so in Challenge Editor if one chooses to.
[[/folder]]
[[folder:Dartling Gunner]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/000_dartlinggunner_28temporary29.png]]
'''Class:''' Military
A unique, infinite-range tower which fires towards your cursor location. Fires extremely quickly but inaccurately. Also hits camo bloons by default in ''4'' and ''5''.
In ''[=BTD4=]'', it can be upgraded to fire laser blasts. ''5'' adds the Ray of Doom, a devastating WaveMotionGun, while the second path has Hydra Rocket Pods, which replaces the darts with small missiles, and the Bloon Area Denial System, which now fires three rockets at a time and grants the Rocket Storm ability, which can shoot up to 100 missiles at once.
''[=BTD6=]'' keeps similar upgrade paths, also adding the M.A.D. ([[FunWithAcronyms MOAB Assured Destroyer]]) after the Rocket Storm upgrade, which reduces the Dartling Gunner's rate of fire in exchange for launching huge missiles that do devastating damage to MOAB-class bloons. In addition to the laser and rocket paths, ''[=BTD6=]'' also has a new upgrade path, which makes the Dartling shoot slower and reduces its range, but now shoots bursts of highly damaging buckshot, with the Bloon Area Denial System and Bloon Exclusion Zone granting it several barrels that can be set to automatically target nearby bloons like a regular tower.
----
* AntiFrustrationFeatures: In ''[=BTD5=]'', there's a specialist building that adds the option to have the Dartling Gunner constantly shoot towards one fixed point, in case you don't want to be manually aiming the thing all the time. It comes with the tower in ''6''. If you have a specific Monkey Knowledge perk, it even provides an activated ability that instantly unlocks all locked Dartling Guns in case of an emergency, even providing a swivel speed bonus in the process.
* CoolChair: In ''[=BTD6=]'', the Ray of Doom takes the form of a seat with an attached WaveMotionGun, so the monkey gunner can sit back in style while vaporizing swathes of bloons.
* CripplingOverspecialization: The M.A.D upgrade is, as the full name implies, extremely effective at popping MOAB-class Bloons, with the M.A.D. being one of the few towers that can easily take down a BAD and its MOAB-class spawn all by itself. However, its slow attack rate actually makes it ''worse'' at dealing with Ceramics and below than the previous upgrades, with even weak bloons being liable to slip through it. The Ray of Doom has the reverse problem: while it easily vaporizes any amount of [=BFBs=] and below, it has a relatively low single target damage for its price, and can struggle popping [=Z.O.M.Gs=] and especially the [=BAD=].
* DiscardAndDraw: The high tier upgrades in ''6'' tend to play around with the base concept of the Dartling Gun.
** The Plasma Accelerator is very strong, but the laser will stop where your cursor is instead of going on infinitely. This means you need more micromanagement to use it well. Additionally, it no longer ignores obstacles, meaning that vision blockers will stop the beam dead in its tracks.
** The M.A.D. deals humongous damage to MOAB-class bloons, but also ''significantly'' reduces its attack speed. It actually performs worse against regular Bloons than the preceding upgrades.
** The buckshot path in general discards the Dartling's infinite range and fast attack speed for high damage bursts. The fourth and fifth tier upgrades also lets the Dartling automatically target Bloons, making it more similar to a regular tower.
* {{Expy}}: The Bloon Area Denial System and Bloon Exclusive Zone ''[=BTD6=]'' are based on the Vickers turret's upgrade chain in ''SAS Zombie Assault TD'', most notably the Area Denial Weapons System and Zeus Exclusion Zone, from whom it gets its names from. Similar to the latter Zeus Exclusion Zone, the BADS and BEZ have multiple independent turrets that can aim at separate targets or focus on a single one.
* FunWithAcronyms:
** Bloon Area Denial System, or B.A.D.S. for short.
** ''6'' adds the M.A.D. upgrade, short for MOAB Assured Destroyer.
* GatlingGood: If you don't go for its first upgrade path, which turns it into a WaveMotionGun. It eventually upgrades to fire ''rockets'' at a Gatling gun rate.
* GuideDangIt: In BTD 6, the Dartling Gunner has the exact same problem as the Super Monkey - its shots ''look'' just like the earlier-unlocked Dart Monkey's, and they're both just referred to as "darts" by the game.
** However, just like the Super Monkey, each individual dart shot by the Dartling Gun only pops a ''single'' Bloon before disappearing, unlike the Dart Monkey's OneHitPolykill abilities.
** This, again, makes it much less able to handle crowds of massed Bloons than it initially appears - though its initial performance ''is'' proportionate to its price, and when you're ''expected'' to get it, so it's not a ''weak'' tower - just a bit counterintuitive.
* HumongousMecha: The M.A.D upgrade replaces the gun with a large robot that shoots giant rockets out of its arms. [[{{Irony}} It's still the shortest of the tier 5 Dartling upgrades]].
* InNameOnly: The Bloon Area Denial System upgrade in ''6'' is vastly different than in ''5''. In ''5'', it's an upgrade that makes the Dartling shoots 3 rockets with every attack and has the Rocket Storm ability. In ''6'', the Rocket Storm is now its own upgrade. Meanwhile the Bloon Area Denial System is now an upgrade for the newly added Buckshot path, appearing as a tower with 4 independently-attacking cannons.
* {{Irony}}: The Faster Barrel Spin upgrade in ''6'' is on the same path as the M.A.D which fires significantly slower than a regular Dartling Gunner.
* MacrossMissileMassacre: The B.A.D.S. in ''5'' fires a spread of 3 rockets at a very high rate and has the Rocket Storm ability, which fires 5 volleys of up to 100 rockets each at the nearest bloons onscreen. In ''6'', the Rocket Storm comes back as the 4th upgrade of the middle path and is upgraded into much larger missiles by the M.A.D. The actual volume of rockets is less impressive at first, but then you realize it [[https://www.reddit.com/r/btd6/comments/k6f636/in_case_you_havent_tried_already_attack_speed/ scales with attack speed buffs]], which can massively improve the missile volume.
* MechanicallyUnusualClass: The Dartling Gunner is one of the few towers that has to be aimed manually. However, the Bloon Area Denial System upgrade in ''[=BTD6=]'' can be set to act more like a normal tower, automatically targetting nearby bloons.
* MoreDakka: Its fire rate is initially high, but not overwhelming. However, it definitely qualifies for this trope once it upgrades to Faster Barrel Spin.
* {{Nerf}}: In [=BTD6=], the Dartling Gunner cannot hit camo without Advanced Targeting or external camo support.
* ShortRangeShotgun: The Buckshot upgrade has the side-effect of getting rid of the Dartling Gun's infinite range ability. On the other hand, it's short-ranged burst deals massive damage.
* ShotgunsAreJustBetter: The Buckshot path introduced in ''6'' converts the Dartling Gun from a rapid-fire minigun to a slow-firing but potent scattergun. Upgrading it further ramps up the fun by adding ''three more guns'' with the Bloon Area Denial System, and the Bloon Exclusion Zone gets even more guns!
* SlowLaser: The Laser Cannon upgrade makes the dartling shoots laser projectiles instead of darts. It still takes time for the lasers to move and hit the bloons. Averted with the Plasma Accelerator and the Ray of Doom, which are constant streams of lasers.
* SpreadShot: The buckshot upgrade in ''6'' shoots bursts of round pellets in a conical spread.
* WaveMotionGun: The Ray of Doom fires a beam that is long enough to extend across the map and has practically {{infinite}} popping power, making it very effective against large groups of bloons.
[[/folder]]
[[folder:Spike Factory]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6sf.png]]
'''Class:''' Support
A tower which periodically deploys slightly weaker road spikes in a small area around it. The spikes can hit camo bloons by default.
Its upgrade paths in ''[=BTD5=]'' are Spiked Balls, which creates powerful spiked balls that deal extra damage against ceramic and can be upgraded to explosive Spiked Mines, and Spike Storm, which can periodically cover the whole track in road spikes.
''[=BTD6=]'' adds a third path, which increases the power and lifespan of the spikes, making them nearly permanent.
----
* BoringButPractical: All the Spike Factory does is place road spikes on the track. On the other hand, it's a very effective way to prevent losing lives through bloons that leak through your defenses, while also providing camo countermeasures and, depending on the purchased upgrades, extra damage against Ceramics or MOAB-class bloons, or incredibly powerful mines that can destroy almost anything.
* MagikarpPower: The bottom path's upgrades are mostly weak, focusing on utility and spike lifespan instead of directly increasing its power. However, reaching the capstone upgrade, Perma-Spike, transforms it into one of the strongest towers in the game, giving it extraordinarily powerful spikes that can persist between rounds and stack up to an absurd degree as a result. It's one of the few towers that can effectively solo a BAD.
* MightyGlacier: The Super Mines upgrade greatly reduces the Spike Factory's fire rate, but it deploys very powerful mines that can destroy the outer layer of a MOAB or DDT in one hit.
* SpikesOfDoom: [[CaptainObvious But of course]]. It drops piles of tacks, which can be upgraded to explosive spiked balls or police-style caltrops that devastate bloons that pass over it.
* StoneWall: With an emphasis on the "wall." Spike Factories don't have much range, and the actual area of their damage is very small and concentrated. High tier spike factories like the Super Mines and Perma-Spike even have a dramatically-reduced attack speed to compensate for their heavy ordnance. That said, the mechanics behind spikes means that the damage they deal is ''tremendous'', bringing any bloon that collides with their spikes to a screeching halt. Spike Factories are ''the'' strongest defensive tower, bar none.
* StuffBlowingUp: Spiked Mines and Super Mines blow up when they run out of spikes.
* SpamAttack: The second path upgrades in ''5'' and ''6'' make the Spike Factory shoot out spikes at increasing speeds. Faster Production and ''Even Faster'' Production are obvious, Spike Storm produces a massive amount of spikes to cover the whole track, and Carpet of Spikes regularly sets down ''entire Spike Storms''.
* TrapMaster: A mechanical version of this trope; it lays SpikesOfDoom on the track to pop bloons that slip through your main defense, but generally becomes of little use once bloons get past it. Upgrades can allow it to become a primary part of your defense instead of just cleanup.
[[/folder]]
[[folder:Beekeeper]]
'''Class:''' Special Agent
A tower that summons bees that stick to Bloons, stinging them repeatedly until the Bloon is eliminated. First appeared in ''[=BTD5=]'' as a Special Agent, but was later added to ''[=BTD4 Mobile=]'' as a regular tower. Doesn't appear in ''[=BTD6=]''.
----
* AscendedExtra: It was merely an Agent in ''[=BTD5=]'', but became a full tower in ''[=BTD4 Mobile=]''.
* BearsAreBadNews: The only tower that is operated by an animal other than a monkey, instead being a bear holding a beehive.
* BeeBeeGun: Uses bees to attack.
* CallForward: It was added to the mobile version of ''[=BTD4=]'' after it was added to ''[=BTD5=]''.
* PutOnABus: Does not appear in ''[=BTD6=]'', neither as a tower nor an agent.
* WeaksauceWeakness: Has no way to pop frozen, lead, or MOAB-class bloons.
[[/folder]]
!!Towers introduced in Bloons Tower Defense 5/Battles
[[folder:Sniper Monkey]]
[[quoteright:333:https://static.tvtropes.org/pmwiki/pub/images/btd6sniper.png]]
'''Class:''' Military
A tower that slowly fires powerful shots that pop 2 layers of bloon on hit, and has unlimited range.
Its final upgrades in ''[=BTD5=]'' are Cripple MOAB, which stuns MOAB-class bloons when they are shot, and Supply Drop, which grants extra money when used.
''[=BTD6=]'' keeps the Cripple MOAB and Supply Drop upgrades, adding the Shrapnel Shot and Bouncing Bullet upgrades to the latter which allow the Sniper to hit multiple bloons with one shot, and the Elite Sniper which drops much more valuable cash crates and gives other Snipers the Elite targeting priority. The Semi-Automatic upgrade from ''5'' is moved to the bottom path which gradually increases the Sniper's firing speed to ridiculous levels, ending with the Elite Defender which mows down anything in its line of sight and can shoot ''even'' faster if a bloon leaks.
----
* AlwaysAccurateAttack: One of the few {{hitscan}} attackers in the series. Thus, if it can see a bloon, it'll hit it.
* ArtificialBrilliance: Invoked by the Elite targeting option granted by the Tier 5 Elite Sniper. When a Sniper is set to Elite targeting, it'll initially target the strongest enemies to maximize their damage, but will switch to targeting the first enemy if it sees that the bloons are getting far enough down the track. It also causes them to prioritize Ceramics over other bloon types in most situations.
* DamageIncreasingDebuff: In ''6'', the Cripple MOAB upgrade also causes the Sniper's attacks to debuff MOAB-class bloons it hits, briefly increasing their damage taken.
* DesperationAttack: The Elite Defender gains increased fire rate the closer a bloon is to the exit. Actually leaking a bloon will temporarily quadruple its already insane fire rate.
* ImprobableAimingSkills: No matter the distance, the Sniper Monkey will [[AlwaysAccurateAttack never miss]]. Even if it's using a fully automatic rifle that puts out over a dozen rounds per second, every single one of these bullets ''will'' end up in a Bloon. There's no aiming or reload time, either: as soon as the Sniper's target is destroyed, it will immediately snap to the next Bloon and keep firing without breaking its rhythm.
* MightyGlacier: Sniper Monkeys have a sluggish attack rate unless they get speed upgrades, but they deal multi-layer damage from the start and can get upgrades to increase their damage further. The top path in particular is entirely focused on buffing the Sniper's effectiveness per hit, to the point where it eventually becomes able to annihilate any regular bloon in a single shot and deal tons of damage to blimps.
* MobileShrubbery: The artwork for Cripple MOAB in both ''5'' and ''6'' depict the sniper wearing a ghillie suit, perfect for hiding in bushes.
* MoneyMultiplier: The Supply Drop ability calls in a Dart Storm-like plane that drops a crate containing between $1,200 in cash. This is the only ability in ''[=BTD5=]'' Flash to start on cooldown when placed. The Elite Sniper upgrade in ''[=BTD6=]'' increases the amount of money that the crate contains alongside its other benefits.
* MoreDakka: In [=BTD6=], the third upgrade path focuses on attack speed. Somehow, the monkey is still able to make long range, high-precision shots even when using a fully automatic rifle.
* PinballProjectile: The Bouncing Bullet upgrade allows the sniper's bullets to bounce to other targets after hitting the first.
* SniperRifle: The Sniper's weapon of choice. It lets the Sniper shoot anywhere on the map, except those blocked by obstacles.
* SupportPartyMember: Unless you invest in the Sniper's bottom path, its skills won't be too terribly effective at raw DPS, but its crowd control abilities (in the top path) and money-making abilities (in the middle path) make up for this. The Tier 5 upgrades of those respective paths are even more directly support-oriented, as Cripple MOAB adds a DamageIncreasingDebuff to any MOAB it hits (even the BAD or bosses!), while Elite Sniper grants increased fire rate and the [[SecretArt Elite targeting priority]] to all other Snipers.
[[/folder]]
[[folder:Ninja Monkey]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6ninja.png]]
'''Class:''' Magic
A relatively fast tower that can naturally see Camo bloons, throwing shurikens with 2 pierce each.
Its final upgrades are Bloonjitsu, which throws five shurikens at the same time, and Sabotage Supply Lines, which slows bloons. [=BTD6=] adds the Grandmaster Ninja and Grand Saboteur as final upgrades to the original two paths, and adds a third upgrade path who specializes in using Sticky Bombs to deal massive delayed damage to MOAB-class bloons.
Its Paragon upgrade is the Ascended Shadow, which provides global camo detection and massive damage against them, can rapidly throw extremely potent shurikens and splitting flash bombs, use devastating sticky bombs against MOAB-class bloons, and has a global Sabotage aura that slows down everything on the screen outside of [=BADs=] and Bosses, while crippling the durability of all non-Boss blimps.
----
* AllYourPowersCombined: The Ninja Monkey Paragon, the Ascended Shadow, hurls seven huge homing shurikens at a time and tosses out a spread of flash bombs every seven throws. These bombs explode into three smaller seeking shurikens each. It also applies a permanent speed reduction to all Bloons short of B.A.D.s or Boss Bloons, reduces the HP of ''all'' non-boss blimps that spawn, and throws card-shaped {{Sticky Bomb}}s at MOAB-Class Bloons (with said bombs doing more damage than ''First Strike Capability''). Finally, it gives all towers permanent camo detection and can hit camouflaged bloons for even greater damage. This power set combines features from the Grandmaster Ninja, Grand Saboteur, and Master Bomber.
* {{Caltrops}}: In ''6'', the Ninja can throw caltrops on the track, which pops any Bloons touching them.
* CoolMask: The Sticky Bomb and Master Bomber upgrades give the Ninja a cool-looking mask depicting an oriental demon.
* GratuitousNinja: Then again the devs ''are'' called Ninja Kiwi.
* MultiShot: Can be upgraded with Double Shot, Bloonjitsu (5 shuriken), and Grandmaster Ninja (8 shuriken) [[SimpleYetAwesome for vastly increased popping power]].
* {{Nerf}}: Due to how its upgrades were redistributed in [=BTD6=], Ninja Monkeys can no longer have Ninja Discipline, Distraction and Seeking Shuriken at the same time.
* PercentDamageAttack: While the Grand Saboteur's ability is active, all new blimps will spawn with only 75% of their original HP, which can get ridiculous when you factor in freeplay scaling. The Ascended Shadow can apply this effect permanently.
* SimpleYetAwesome:
** The Bloon Sabotage ability. It's not flashy, it doesn't wipe out bloons with a firework show, and it didn't even have an animation in 5. That said, Sabo's ability to reduce the movespeed of all bloons on screen by ''half'' is widely considered to be one of the strongest activated abilities in the game, making it invaluable support in late rounds.
** The Ninja Monkey overall counts as such. Despite merely throwing a single shuriken at a time, it's the only non-Hero tower that can directly target Camo Bloons when not upgraded, and packs decent attack speed for a somewhat low cost. Its higher upgrades on the top path just increase the amount of shurikens it throws each time, but are still highly effective.
* StealthExpert: Being a TowerDefense game, there isn't any need for the monkeys to actually hide. That said, the Ninja's stealth aspect is represented in it being capable of seeing [[StealthyMook Camo Bloons]] without any upgrades. In ''6,'' it can take it a step further by outright stripping Camo from struck bloons with Counter-Espionage, while the Paragon Ascended Shadow can turn your ''entire army'' into these while also gaining the ability to hit camos for even more severe damage, making it especially effective against [[DemonicSpiders DDTs]].
* StickyBomb: The third path in [=BTD6=] grants the ninja the ability to throw these, allowing it to destroy MOAB-class bloons with ease.
* StockNinjaWeaponry: The Ninja's basic attack is throwing shurikens, it can set up caltrops, and also throw flash bombs.
* SupportPartyMember: The second path in [=BTD6=] sacrifices the Ninja's offensive potential in order to provide knockback, camo removal, increased attack speed for nearby Ninjas, or speed and health reduction of incoming bloons.
* TechnicolorNinja: Unupgraded, it wears bright red ninja clothing. While there are some upgrades that turn the clothes black, they don't last long as further upgrades turn them colorful again.
* TrickBomb: Its third upgrade path in ''6'' focuses on various bombs. The first one is a flash bomb that briefly stuns any Bloons it hits, and the latter is a StickyBomb that deal massive damage to MOAB-class bloons.
* TrueSight: It's the only non-Hero tower that can attack Camo Bloons without any upgrades[[note]]Although Spike Factories can also damage them if they come across its spikes[[/note]].
[[/folder]]
[[folder:Monkey Engineer]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/000_engineermonkey.png]]
'''Class:''' Support
A monkey who wields a fast-firing nailgun that pops 3 bloons per shot. Its upgrades let it construct various devices to help in popping Bloons.
Its final upgrades in ''[=BTD5=]'' are Bloon Trap, which lets the Engineer lay down a trap that converts passing Bloons into cash, and Overclock, which can greatly boost one tower's attack speed for a period of time.
In ''[=BTD6=]'', the Engineer's top path focuses on building sentries. Sentry Expert lets it build many different sentry types, while Sentry Champion, its final upgrade, replaces these with powerful turrets that rapidly fire plasma bolts before violently exploding. Its second path grants it the Overclock ability, which hugely boosts a tower's attack speed; this can further be upgraded to Ultraboost, which leaves the affected tower with a small permanent boost which stacks up to 10 times. Finally, the third path has the Engineer wield two guns for doubled attack speed, as well as a Bloon Trap which can grant extra money from popped bloons, and can be upgraded to the XXXL Trap, capable of holding up to a ZOMG.
Its Paragon upgrade is the Master Builder, which can deploy three devastating Mega Sentries that each use their own methods of attack and create their own unstable plasma sentries, on top of being able to self-destruct for tremendous damage. The Master Builder itself also gains three powerful nail guns that can pin down anything below a BAD, and can Overclock itself each round to give itself a permanent stacking attack speed buff.
----
* AllYourPowersCombined: {{Subverted}}. While the Master Builder is formed as a fusion of the Sentry Champion, Ultraboost, and XXXL Trap, it functions much more like a powered-up version of Sentry Champion, and [[PowerUpLetDown doesn't have the Cleansing Foam, Overclock, or Bloon Trap abilities available]]. The only remnants of the other paths are its ability to buff itself in a manner similar to Overclock, and its ability to Pin targets with multiple nail guns.
* TheEngineer: Well, duh. While it can shoot at Bloons with its nail gun, its main power is to set up various contraptions like sentries and traps to help against the Bloons.
* GatheringSteam: The Master Builder's attack speed increases slightly every round it's deployed, up to a limit. By the time it actually hits this limit, however, its 3 guns will be attacking together for a total hit rate of about ''60 times per second.''
* GunsAkimbo: One upgrade in ''[=BTD6=]'' makes it dual-wield its nail guns, doubling its attack speed.
* MadeOfExplodium: The last upgrade on the top path in [=BTD6=] has the engineer shoot out plasma spewing sentries that violently explode when their time is up. A particularly effective strategy is weaponizing this by manually selling the sentries when enemies draw near, turning them into on-demand bombs.
* MiniMecha: The Master Builder, the Paragon for the Engineer, is a robot suit several times the controlling Engineer's size.
* MoneyMultiplier: Manually emptying the Bloon Trap gives twice as much money as usual for the bloons it captured. However, if you're too slow to react, it will empty automatically and give only the normal amount.
* MoreDakka: The Overclock ability doubles the attack speed of a single selected tower for an entire minute, but only has a 45-second cooldown! In ''6'', its tier 5 upgrade, Ultraboost, does not only the above, but also grants a small ''permanent'' speed boost after the Overclock boost is used up. This stacks up to 10 times, effectively letting a single tower have the Overclock effect ''passively''. And then you add the ''actual'' Overclock buff to it.
* NailEm: The Monkey Engineer's primary weapon is its trusty nailgun. Unupgraded sentries also fire nails as projectiles.
* PowerNullifier: With the Cleansing Foam upgrade, it can spray foam onto the field that removes camo and regen properties from bloons, and also pops leads.
* PurpleIsPowerful: The Sentry Champion has a purple color scheme, representing how its sentries are the most powerful ones.
* SentryGun: Several of the engineer's upgrades revolve around building these to assist in poppage. The 1/0 engineer is easily one of the best starting towers in the game, especially with the tier 4 specialty building. The top path Engineer in ''6'' specializes in building sentries, eventually capable of building sentries with varied damage types such as bombs, lasers, and string waves of plasma (the last of which are unstable, causing them to violently [[StuffBlowingUp explode]] when time is up. This is taken to a head with the Master Builder's three Sentry Paragons; they fire a Plasma Accelerator beam/plasma balls/anti-MOAB rockets respectively, and are each a Paragon-tier defense, alongside spawning even more sentries that function like the Sentry Champion's. [[ArsonMurderAndJaywalking They also explode when redeployed or sold]].
* SupportPartyMember: Naturally, since it's classified as support. It has offensive capabilities, especially as the top path focuses on its sentries, but you'll find much greater use using the middle path upgrades. Its Paragon, however, [[AvertedTrope is dedicated fully to offense.]]
* TrapMaster: It can lay down Bloon Traps on the track, which trap and instantly kill the Bloons that pass over them. In ''6'', it can lay down XXXL Traps, which can trap an entire ZOMG at once.
* TheTurretMaster: The Engineer's most distinctive trait is the ability to set up automatically-shooting sentry guns. The Master Builder takes this a step further — it can build 3 Mega Sentries that ''deploy their own sentries.''
[[/folder]]
[[folder:Bloonchipper]]
[[quoteright:287:https://static.tvtropes.org/pmwiki/pub/images/bmcbloonchipper.png]]
'''Class:''' None
A tower that sucks in single bloons, shreds them, and spits the remains out the back, likely to be sucked right back up.
Its final upgrades are Super Wide Funnel and Supa-Vac.
----
* TheCameo: During [=BTD6's=] update 31, a broken and rusty Bloonchipper makes an appearance in the map Junkyard.
* PutOnABus: Of the towers that did not appear in [=BTD6=] at launch, the Bloonchipper is the only one that was confirmed to not be returning in a later update, not counting Special Agents.
* WeaponsThatSuck: And shred bloons, even [=MOABs=] when at 4/x, to bits.
* WoodChipperOfDoom: [[{{WhatItSaysOnTheTin}} Pretty much the game's own deadly woodchipper.]] It can suck bloons, spit out the remains, ''suck in the remains'', and when upgraded, it can suck in MOAB-class Bloons, making it supremely useful to the monkeys, and extremely lethal to the Bloons.
[[/folder]]
[[folder:Heli Pilot]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6heli.png]]
'''Class:''' Military
An air-based tower that follows your touch or mouse pointer around the map and fires 2 darts per shot, each with 2 pierce.
Its final upgrades are Apache Dartship, which has massively increased firepower with missiles and a machine gun, and Support Chinook, which can move other towers around and drop supply crates full of cash and extra lives.
[=BTD6=] adds the Comanche path, which can fire missiles, slow down MOAB-class bloons and summon extra helicopters as Bloons get closer to the exit. The other paths gain extra upgrades as well, with the Apache Prime boasting a devastating arsenal of weapons, and Special Poperations allowing the Chinook to deploy a monkey Marine to shred Bloons with a powerful dart rifle.
----
* BiggerOnTheInside: The only explanation as to why the Chinook upgrade allows you to reposition big towers like Flavored Trades and Tech Terror despite them being bigger than what the inside size of the Chinook suggest. Though it has its limits with the Chinook being unable to reposition towers like Sun Temples and Aircraft Carriers.
* CoolPlane: Well, Cool Helicopter. The upgrade paths are based on real life helicopters, the Apache, Chinook, and Comanche.
* DeathFromAbove: The Door Gunner perk for Military Knowledge allows a Support Chinook to pick up a tower below tier 5 and have it open fire on enemies while it carries them around.
* DepthPerplexion: The Razor Rotor upgrade can somehow pop bloons despite the fact that the rotor should be above the bloons. Its upgrade artwork implies the helicopter is leaning downward towards the track to shred bloons.
* EnergyWeapon: The Apache Prime upgrade trades darts for laser projectiles that do more damage and have more pierce, and its primary machine gun is changed to fire far deadlier plasma bolts.
* FlyingSaucer: Its purchasable skin for BTD Battles turns it into a flying saucer.
* HealingFactor: Support Chinook's Supply Crate grants lives to you when you activate its ability.
* HelicopterBlender: The Razor Rotor upgrade, which can pop any kind of bloon that gets near the helicopter.
* ItsRainingMen: The Special Poperations fifth tier upgrades allows the Chinook to temporarily deploy a super-powerful Monkey Marine that shoots bloons to oblivion with a machine gun. It can also do a different version of this by picking up a tower and airdropping them somewhere else to wreak havoc.
* MacrossMissileMassacre: The Apache Dartship can periodically fire a salvo of homing rockets that can track bloons anywhere on the map. Upgrading to Apache Prime significantly increases their damage against blimps.
* MagikarpPower: The Chinook upgrade path mostly focuses on being support. The final upgrade, Special Poperations, however, lets it deploy a very powerful Marine Monkey vapable of tearing bloons to shreds.
* MechanicallyUnusualClass: The Heli-Pilot can fly to wherever you tap your screen or move your pointer, hover in one spot, patrol between two set points, and even chase after the bloons.
* TheMinionMaster: The Comanche Defense upgrade lets the Heli summon up to three smaller helicopters depending on how close the bloons are to the exit. The Comanche Commander makes all three smaller helicopters permanent.
* MoneyMultiplier: The Support Chinook's Supply Crate drops a supply crate that alternates between giving $1500 and $2000 in cash and granting between 50 and 75 lives in [=BTD5=]. In [=BTD6=], it drops both crates at once that each gives $1550 and 10 lives per use. Special Poperations improves the crates to $4500 and 25 lives.
* MoreDakka: The Apache Dartship upgrade installs a machine gun and homing missiles, significantly improving the Heli's power.
* SupportPartyMember: The Chinook upgrade path focuses on blowing back Bloons, moving towers, and making money. Its only offensive upgrade is Special Poperations.
[[/folder]]
[[folder:Monkey Sub]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/btd6sub.png]]
'''Class:''' Military
A water-based tower that shoots homing darts even when unupgraded. It is notable for its Advanced Intel upgrade, which allows it to shoot bloons that are in range of any other tower on the map.
Its upgrade paths in [=BTD5=] are Submerge and Support, which stops it from attacking but removes camo from passing bloons and can be upgraded with a Bloontonium Reactor to rapidly pop nearby bloons, and the Ballistic Missile, which fires powerful missiles and can gain the First Strike Capability ability, which fires a missile powerful enough to instantly erase almost any bloon.
[=BTD6=] mixes up the upgrade tree, and adds a third path, whose Armor Piercing Darts deal extra damage to MOAB-class bloons, and has the Sub Commander ability to increase the power of other nearby subs. The Bloontonium Reactor also gets upgraded into the Energizer, which deals much more damage while further reducing ability cooldowns (especially for other water-based towers) and boosting Heroes' EXP gain, and First Strike Capability into Pre-Emptive Strike, which launches a not-as-deadly but still extremely strong missile at any MOAB-class Bloons that appear on the track.
----
* ActionInitiative: The aptly named Pre-Emptive Strike instantly strikes every MOAB-class bloon that enters the screen with a lethal missile, instantly destroying weaker blimps before they can even make a move.[[note]]The missile deals 750 damage, which can instantly kill both normal and fortified M.O.A.Bs, as well as non-fortified B.F.Bs or D.D.Ts provided they don't have buffed HP (like from late Freeplay rounds). If a Sub Commander's buff is active, the missile will deal ''1500'' damage instead.[[/note]]
* FlechetteStorm: Airburst Darts make the Monkey Sub's darts explode into even more darts upon impact. Combined with the massive fire rate increases of other upgrades, it results in this.
* InstantDeathRadius: The Energizer's radioactive aura completely obliterates any standard bloon, doing 3 damage every third of a second without any other upgrades. For reference, ceramics have 18 total layers. They don't survive longer than 2 seconds.
* MacrossMissileMassacre: Pre-Emptive Strike, the final upgrade on its second path, increases its base missile attack rate to once every half second, but where it really shines is when it launches a [=MOAB=] Assassin at EVERY blimp that dares enter the screen. By the time this upgrade becomes affordable and relevant, the game will be throwing [=MOAB=]-class bloons at you ''en masse'', resulting in this trope.
* MookCommander:
** The tier five Sub Commander provides a massive pierce buff and ''doubled'' damage to all Monkey Subs in its radius. With the appropriate Monkey Knowledge, the range limitation is removed, and ''all subs onscreen'' get the bonus just for having a Sub Commander on the track.
** The Bloontonium Reactor reduces the cooldown of nearby water tower abilities (read: First Strike, [=MOAB=] Takedown, and Pat Fusty and Admiral Brickell's abilities) by 15%. Energizer ''halves'' water tower ability cooldowns, and reduces the ability cooldown of all other towers on screen by a fifth.
* MoreDakka: Third path upgrades on the Monkey Sub add more guns which means more firepower. Sub Commander gets special treatment: its base fire rate is doubled compared to a Triple Guns sub, meaning it shoots 6 times as fast as a base sub.
* NecessaryDrawback: Like the Monkey Buccaneer, its strong power is balanced out by needing a body of water to be placed in.
* NukeEm: The First Strike Capability's signature ability launches a powerful nuclear missile at the strongest bloon on screen. Few things can survive this.
* OneHitKill: First Strike Capability launches a super-powerful missile at the strongest bloon on the map, dealing ''10,000'' damage on impact[[note]]The most damage done by a single attack in the game until the Paragons were introduced[[/note]] as well as significant splash damage. At the time of its introduction, this could instantly and completely destroy any bloon, notably being the only thing that could definitively one-shot a Z.O.M.G.,[[note]]For reference, a Z.O.M.G. has 4,000 HP, and fortified Bloons didn't exist at the time, meaning it'd only become able to survive the missile in ''very'' late Freeplay rounds.[[/note]] and any surplus damage from destroying the initial target is shunted onto nearby bloons, allowing it to possibly eliminate groups of blimps at a time. Even when the B.A.D. was introduced, it still remained a useful tool for taking it down as it can take out ''half'' of a non-fortified B.A.D's base HP in one shot, and will completely obliterate the thing if it deals the finishing blow, which usually just needs the blimp to be softened up a bit. Its immense damage also makes it a valuable asset against early Boss Bloon tiers, especially for speedruns.
* PowerNullifier: A submerged Monkey Sub can remove camo from bloons that pass through its radar.
* RecursiveAmmo: Airburst Darts make the main dart explode into several smaller darts.
* {{Roboteching}}: The main attack of the Sub homes onto bloons. Comes in handy when one of its upgrades gives it basically infinite range.
* RussianFashion: The commander of a First Strike Capability sub wears a distinct ushanka in place of the other subs' navy cap.
* SicklyGreenGlow: Bloons affected by the Bloontonium Reactor are indicated with a bright green glow.
* StanceSystem: The Submerge and Support upgrade (along with its upgrades) gives the Submarine a "Submerge" command. When submerged, it stops shooting darts, but instead emits sonar waves that removes camo properties. Further upgrades also let the sonar waves damage bloons and reduce ability cooldown of other towers.
* SupportPartyMember: A Submarine specced for Path 1 has virtually no offensive power, but has a wide variety of utility functions. It starts with the ability to permanently reveal Camos near the Sub and decreasing the cooldowns of nearby water towers, but Energizer causes it to ''halve'' the cooldowns of all nearby water monkeys, increase the XP gain of all nearby heroes by 50%, and passively grant 20% cooldown reduction to ''every tower on the screen''.
* TargetSpotter: With the Advanced Intel upgrade, every other tower becomes one to the Monkey Sub, being able to target any Bloon that is within another tower's range (even of those that can't attack, such as Banana Farms), and can target Camo Bloons as long as that other tower can target them as well.
[[/folder]]
[[folder:Special Agents]]
Unique towers in ''Bloons Tower Defense 5'' that can be purchased with Monkey Money and placed onto maps for extra support. There are a total of thirteen across all versions of the game, and each one gets permanently upgraded after being used enough times.
----
* AbnormalAmmo: The projectiles of the Special Agents include bees, acorns, coconuts, banana peels, watermelons and their seeds, and snowballs.
* ADayInTheLimelight: ''[=BTD5=]'' features a special mission, "For Their Eyes Only", where Special Agents are the only towers allowed.
* AscendedExtra: In the mobile version of ''[=BTD4=]'', the Beekeeper is a full-fledged secret tower introduced as a promo for the fifth game, and has its own upgrades.
* BearsAreBadNews: The Beekeeper is a surly, frowning brown bear, and it commands a hive of angry bees to attack with, though it's on the monkeys' side.
* BeeBeeGun: The Beekeeper fires out bees that stick to bloons and deal DamageOverTime. The Beekeeper Pro gets an ability that swarms them onto a hundred bloons at once.
* BulletSeed: The Watermelon Spitter chews on a watermelon when left alone to build up seeds, then rapidly spits them out at passing bloons. The Pro version can spit out the whole watermelon as a projectile.
* TheCameo: In ''BTD6'', the Tribal Turtle (well, Tribal ''Tortoise'') appears as a purchasable cosmetic item in Contested Territory mode.
* ChuckCunninghamSyndrome: Since Special Agents were dropped as a mechanic for ''Bloons Tower Defense 6'', every Special Agent vanished except for the Portable Lake, the Pontoon, the Monkey Farmer, and Super Monkey Storm, which were made into Powers instead and cannot upgrade into Pro variants.
* CoconutMeetsCranium: The Tribal Turtle throws a coconut with every other attack, which pierces more bloons, breaks Lead Bloons, and deals extra damage to Ceramic Bloons.
* CombatTentacles: The Portable Lake Pro's activated ability, "Activate Sea Monster!", calls up an unseen sea creature's tentacle, which attacks several bloons before submerging.
* CrutchCharacter: Most of the combat-oriented Special Agents are very powerful for the early-game, but due to having no upgrades, are unable to compete later in the game.
* EvolvingWeapon:
** Every Special Agent turns into a Pro version once it is bought enough times, making it permanently stronger while keeping its cost the same.
** The Bloonberry Bush grows five more thorns for each round it's out for a maximum of 200, using up those thorns when a bloon runs into it like a pile of Road Spikes. The Bloonberry Bush Pro produces creepers that can grow as well.
** A new Radadactyl hatches out of the nest and begins swooping every round, for up to five Radadactyls.
* HulkingOut: The Angry Squirrel turns green and grows larger whenever a bloon leaks, making it attack faster and giving it camo detection and lead damage for a limited time. Angry Squirrel Pro turns purple when in its anger mode, and only needs to throw enough acorns to transform.
* KillSat: The Bloonsday Device unlocks an activated ability that causes it to fire an orbital laser, which is guided with the mouse and deals high damage to anything it touches. The Pro version leaves behind damaging plasma on the track.
* NonStandardCharacterDesign: The Special Agents are some of the only non-monkey animals seen in the series, making them stand out next to the main towers.
* SmartBomb: Super Monkey Storm, an ability of the Monkey Beacon prior to it getting changed into the Monkey Village, is a screen-wipe that is guaranteed to pop every standard bloon and deal high damage to MOAB-class bloons.
* {{Snowlems}}: The Mad Snowman is a living snowman who throws freezing snowballs at the bloons, but melts away after 10 rounds (20 in its Pro form).
* SupportPartyMember:
** The Meerkat Spy provides camo detection to any towers in its radius. The Meerkat Spy Pro swaps out its eyepatch for a laser eye and gains the ability to attack.
** The Pontoon and Portable Lake act as platforms to place land towers on water or water towers on land, respectively. While the Portable Lake Pro gets an activated ability that summons a sea monster tentacle to attack bloons, the Pontoon can't attack at all and its Pro upgrade enhances the range of towers placed on it.
** The Banana Farmer exists to automatically collect Banana Farm drops. Once it becomes the Monkey Farmer Pro, it can spread banana peels onto the track to knock bloons back, but still can't pop them.
[[/folder]]
[[folder:Wizard Lord]]
[[quoteright:136:https://static.tvtropes.org/pmwiki/pub/images/dd05ff18_6625_4d04_a0df_45a7ec5df9a3.png]]
A special tower only available in the "Wizard Lord" Special Mission in ''Bloons Tower Defense 5''. He acts as a 4/4 Monkey Apprentice, having the abilities of both paths plus a stronger phoenix ability, but needs to feed on other towers to stick around.
----
* AllYourPowersCombined: As a 4/4 tower in function, he has the Tempest Tornado of the Monkey Apprentice's first path and the Dragon's Breath and Summon (Super) Phoenix of its second path, along with every previous spell. His appearance reflects this, as he has the ProphetEyes of a Master of Fire and is FlyingOnACloud like the Master of Air.
* TheArchmage: The closest thing the Wizard Monkeys had to one before the fifth-tier Archmage and the Magnus Perfectus paragon in the sixth game, as the Wizard Lord can cast every spell and has an empowered ability as well.
* EvilLaugh: He lets out a sinister laugh whenever he feeds on a tower.
* NoFairCheating: If you think you could simply spam Special Agents as a stand-in for your towers, he will not consume them and will just leave, resulting in a NonStandardGameOver.
* OneShotCharacter: While Wizard Lords can be bought as decorative items in ''Bloons Monkey City'', the tower itself has only shown up in one special mission of the fifth game. The Archmage of ''[=BTD6=]'' is its own take on the idea, as it gains the Shimmer and Dragon's Breath powers of the other upgrade paths but doesn't feed on other towers.
* PowerAtAPrice: The Wizard Lord is very strong, but he removes the most expensive tower on the map every other turn, and he'll leave if there are no towers for him to consume, which counts as a NonStandardGameOver.
* PurposefullyOverpowered: The Wizard Lord is broken in terms of power, but also unwieldy because of his need to sacrifice expensive towers. Part of the challenge's difficulty is supporting the Wizard Lord (since he can't handle every round by himself) without wasting money on costly towers that will be lost.
[[/folder]]
[[folder:COBRA]]
A special tower that uses a pistol which pops two layers per shot. However, its true power comes from its upgrades, designed to support your side or debilitate the enemy in powerful and unorthodox ways.
Its final upgrades are Offensive Push, which allow Bloons to be sent a round earlier than the one they usually become unlocked at, and Misdirection, which lets it periodically move the highest level enemy Bloon to the opponent's side.
----
* DualWielding: Its Double Tap upgrade has it wield two guns at once.
* FunWithAcronyms: The COBRA stands for '''C'''overt '''O'''ps '''B'''attles '''R'''esponse '''A'''gent.
* HoistByHisOwnPetard: The Misdirection ability allows the COBRA to send the strongest bloon on their side to the enemy's instead. If the enemy has been investing in offense or is otherwise unprepared to defend against the bloon they just sent to attack, they're in big trouble.
* LifeDrain: With its Attrition upgrade, it will periodically steal two lives from the opponent. For balance reasons, while this can't outright defeat an enemy (if they're at 1 HP, it'll give you $30 instead), it will still leave them on the brink of defeat while keeping you healthy - making a battle against a COBRA user a race against time unless you also have one on hand. On Defense mode, it just causes you to [[HealingFactor regenerate 2 lives]] instead.
* MechanicallyUnusualClass: It's the only tower in the game which affects the players instead of just attacking the bloons.
* MoneyMultiplier: With Wired Funds, the COBRA will give the player an additional $80 each round, which stacks.
* MyRulesAreNotYourRules: Offensive Push allows the user to unlock the next tier of bloons one round earlier than usual, which usually also means one round earlier than the opponent unless they're also packing a Path 1 COBRA of their own. Furthermore, this stacks if you send out multiple - it's not unheard of for Z.O.M.Gs being sent out in ''half the time''' they'd normally take to unlock.
* SupportPartyMember: Its entire gimmick is the wide array of unconventional support buffs it can give the player. These range from giving you extra cash and regenerating/stealing lives, to decreasing cooldowns on special abilities, to lowering the minimum round requirement for certain Bloon attacks, to even sending the enemy's forces back at them.
* WeakButSkilled: The COBRA isn't a very strong attacking tower, but its upgrades can help harass your opponent or even defend yourself.
[[/folder]]
!!Towers introduced in Bloons Tower Defense 6:
[[folder:Alchemist]]
[[quoteright:288:https://static.tvtropes.org/pmwiki/pub/images/btd6alchemist.png]]
'''Class:''' Magic
The alchemist throws acid potions which splash onto bloons and gradually melt them. Unlike most towers, these potions are lobbed at Bloons, meaning the Alchemist can ignore walls and other line-of-sight blockers and hit targets wherever they are.
Its first upgrade path focuses on buffs: Acidic Mixture Dip allows any monkey to pop lead and deal extra damage to ceramic and MOAB-class bloons, and Berserker Brew increases damage, range, and attack speed, which can be further increased with the Stronger Stimulant and made permanent with Permanent Brew. The second path is a more straightforward attacker, using Stronger Acid to dissolve bloons faster, Perishing Potions to remove fortification from lead and ceramic blooms, Unstable Concoction to make MOAB-class bloons explode violently when popped, and Transforming Tonic to turn into a powerful attacking monster, with the final upgrade, Total Transformation, also affecting nearby monkeys. Finally, the bottom path focuses on transmutation: Lead to Gold grants lots of extra money when popping lead bloons, Rubber to Gold splashes bloons with a potion that extends this effect to any kind of bloon, and the Bloon Master Alchemist wields a powerful shrinking potion that can turn any bloon into a basic red bloon.
----
* AlchemyIsMagic: The Alchemist is classified as a Magic monkey, capable of creating various potions with powerful effects.
* AwesomeButImpractical: The Bloon Master Alchemist can turn almost any bloon into [[TheGoomba a red bloon]], even a ZOMG! While the prospect of taking out the second-strongest enemy in two attacks might sound enticing, this has a serious drawback: you don't get ''any'' money from the layers removed by the shrinking potion, which can seriously cripple your income. It's especially bad on [[HarderThanHard CHIMPS mode]], where you can't use Farms to make up for the lost money.
* EyeBeam: The attack monsters from Total Transformation shoots blue beams from their eyes at a really fast rate.
* HPToOne: What the Bloon Master Alchemist's shrink potion essentially is. It transforms any Bloon it hits into a Red Bloon, which only requires 1 damage to pop.
* JekyllAndHyde: The Transforming Tonic ability turns its owner Alchemist from a somewhat-unhinged scientist into a savage beast of incredible power. Bonus for the mechanism being a clear shout out to the [[Literature/TheStrangeCaseOfDrJekyllAndMrHyde trope maker]].
* MadScientist: The middle path Alchemist looks more and more unhinged with each upgrade. It also gains the ability to transform itself and other monkeys into savage monsters.
* MoneyMultiplier: The "Lead to Gold" upgrade grants extra money when the alchemist pops a lead bloon, while "Rubber to Gold" increases the value of affected bloons. Inverted by the Bloon Master Alchemist, whose shrinking potion turns any [[ContractualBossImmunity non-BAD]] bloon into a red bloon, but also gives them the money bounty of one.
* NonIndicativeName: The "Rubber to Gold" upgrade allows the Alchemist to partially turn the affected bloons into gold - even Lead, Ceramics, and MOAB-Class Bloons, which are clearly not made of rubber.
* NoSelfBuffs: An Alchemist cannot benefit from its own potions.
* OneHitKill: The "Lead to Gold" upgrade makes the Alchemist's potions and acid pools completely pop any Lead Bloon that gets hit, regardless of whether it was Fortified or not.
* PimpDuds: The Bloon Master Alchemist is decked out in a golden, jewel-encrusted uniform with cool shades.
* PowerNullifier: Perishing Potions can remove the fortified property off of Lead and Ceramic Bloons.
* ShrinkRay: The Bloon Master Alchemist has a shrink potion which turns any bloon into a red bloon. This works on anything up to a Z.O.M.G, effectively one-shotting them.
* StatusBuff: One upgrade path specializes in this. Acidic Mixture Dip allows allies to pop lead bloons and deal extra damage against ceramic and MOAB-class bloons, and Berserker Brew increases damage, range, and attack speed.
* SuperMode: Transforming Tonic turns the alchemist into a monster with powerful attacks. The Total Transformation upgrade turns up to five other nearby monkeys along with him.
* SupportPartyMember: The Alchemist's damage output in the top and bottom paths, outside of what is provided by the "Lead to Gold" and "Bloon Master Alchemist" upgrades, is very limited, so an Alchemist on either of these paths is almost exclusively used to provide buffs towards other monkeys or generate extra money.
* {{Transmutation}}: The bottom path Alchemist specializes in this, with Lead to Gold [[PhilosophersStone instantly turning lead bloons into gold]], Rubber to Gold applying a debuff to bloons with a special potion that makes them grant increased cash, and Bloon Master Alchemist being able to transform any bloon up to a ZOMG into a [[HPToOne lowly Red bloon]].
* WeaponOfXSlaying:
** Perishing Potions deals bonus damage to MOAB-class bloons as well as removes the Fortified property off normal bloons. These properties combine to do a whopping ''20 damage'' to fortified blimps.[[note]]For comparison, it does only 5 to non-fortified blimps, meaning it kills a fortified blimp twice as fast as a normal blimp.[[/note]]
** Lead to Gold potions deal bonus damage to Lead Bloons- enough to pop them in one shot. This damage bonus also applies to [=DDTs=].
[[/folder]]
[[folder:Druid]]
[[quoteright:338:https://static.tvtropes.org/pmwiki/pub/images/btd6druid.png]]
'''Class:''' Magic
The druid attacks by throwing a volley of sharp thorns at bloons.
Its first upgrade path grants it command over air: Heart of Thunder fires an arc of electricity, the Druid of the Storm can blow bloons towards the entrance with a tornado, Ball Lightning fires an orb which zaps nearby bloons, and the Superstorm boosts the tornado to affect any bloon type. The second upgrade path, Druid of the Jungle, allows the druid to summon vines to immobilize a bloon, use Jungle's Bounty to earn extra money from nearby farms, and eventually become a Spirit of the Forest which covers the whole path with thorny vines and earns extra lives and money. The bottom path allows the druid to channel his wrath: the Druid of Wrath gains attack speed the longer targets remain in range, Poplust further boosts the speed of all nearby druids and can stack with other Poplust druids, and the Avatar of Wrath deals more damage the more RBE there is on the map.
----
* BlowYouAway: A Druid of the Storm can create a tornado to blow bloons back to the entrance. The Superstorm upgrade takes this even further by letting it blow back anything that isn't a B.A.D.
* ChainLightning: The Heart of Thunder upgrade grants the druid a lightning attack that hops from Bloons to Bloons. The Ball Lightning upgrade lets the druid shoot a ball, which then shoots at Bloons with chain lightnings which can also [[KillItWithIce freeze Bloons]].
* DecompositeCharacter: The druid's storm upgrade path is based on the apprentice's air path, having a ChainLightning and tornado spell.
* {{Druid}}: The "priest of nature" kind. Its basic attack is throwing a flurry of wooden thorns at Bloons. One of its upgrade paths focus on controlling the storms, and another focuses on the power of plants.
* FlechetteStorm: The druid's base attack consists of throwing a flurry of small thorns in a SpreadShot. It can be boosted to a truly ridiculous level if you have several Poplust druids in close proximity boosting each other's attack speed.
* GreenThumb: A Druid of the Jungle can summon vines to immobilize a bloon. Further upgrades allow it to instantly make nearby farms produce extra money, or create a huge patch of vines along the path.
* LightningWindJuxtaposition: His top path upgrades allow him to use thunder magic and to summon tornadoes. The last upgrade of that path allows him to summon electrified tornadoes.
* MoneyMultiplier: Jungle's Bounty instantly grants you money for each banana farm in range of the druid.
* OneHitKill: A Druid of the Jungle is able to instantly destroy any single non-MOAB class bloon with a slow-attacking vine. Upgrading to Nature's Bounty lets it do this to two bloons at a time.
* RedEyesTakeWarning: The Avatar of Wrath has 'em. As the Druid with the most offensive strength, it's best to take heed. Poplust druids' wolf pelts also have red eyes.
* RedIsViolent: The bottom path of the Druid, which specializes in overwhelming attack power, has a predominant red motif to highlight this. Druids with the Heart of Vengeance wear a ruby gem on their head, and Poplust druids throw black horns that are tinted with red. The Avatar of Wrath culminates this with its red eyes and fur.
* SpamAttack: The bottom path specializes in raising the druid's attack speed to ludicrous levels: Heart of Vengeance can up to double the druid's attack speed, the Druid of Wrath can double it again if it continuously attacks long enough, and having nearby druids with Poplust can add even more speed to that.
* SpreadShot: Throws a spread of thorns.
* UnstoppableRage: The bottom path of upgrades increases the druid's power as it grows angrier, and its artwork portrays it becoming more and more furious as it's upgraded. Heart of Vengeance increases its attack speed when you lose lives, and the Avatar of Wrath gains more damage the more bloons (based on RBE, not total numbers) are on the screen.
[[/folder]]
[[folder:Beast Handler]]
[[quoteright:256:https://static.tvtropes.org/pmwiki/pub/images/beasthandler.png]]
'''Class:''' Support
A Support Tower that was introduced in the 36.0 update. It normally uses a melee attack, but its upgrades let it summon various beasts to fight the Bloons in its stead, and multiple Beast Handlers can merge their beasts together to increase their individual power.
The top path specializes in aquatic beasts that strike foes from the water, with higher tiers becoming able to drag larger bloons into the water to instantly defeat them. The middle path summons land-based dinosaurs that bite at bloons, with higher tiers improving their damage output and providing extra utility like an area stun and boosted damage against impaired targets. The bottom path focuses on birds of prey that strike from above and drag bloons to a designated point, with higher tiers being able to drag more and larger bloons at once. Uniquely among towers, the Tier 5 Beasts are so fearsome that they require four Tier 4 Beast Handlers of that path to even use them.
----
* AttackAnimal: The eponymous "beasts" they handle are as varied as they are deadly:
** The top path uses aquatic animals, such as [[PiranhaProblem piranhas]], [[ThreateningShark great whites]], [[DeviousDolphins orcas]], and even a mighty Megalodon.
** The middle path uses land-dwelling dinosaurs, from the humble ''Microraptor'' to the cunning ''[[RaptorAttack Velociraptor]]'' to the mighty ''[[TerrifyingTyrannosaur Tyrannosaurus rex]]'', and even greater beasts beyond...
** The bottom path relies on falconry, using birds like horned owls, great eagles, and condors. At max power, they can control the legendary [[RocBirds Pouākai]]!
* AttackAttackAttack: For a Support category tower, it's very damage-oriented across all of its paths; the most support-related aspect being the birds of prey's ability to drag bloons back towards the entrance.
* TheBeastMaster: It's in its name, using various animals such as birds, fish and reptiles to pop Bloons.
* DoubleUnlock: Tier 5 Beast Handlers don't just need to be unlocked and then bought. Due to the sheer power of the beasts in question, you need a minimum of three other Tier 4 Beast Handlers of that type, merged into the same handler, in order to actually control and upgrade to a Tier 5 beast.
* FusionDance: Starting at Tier 2, Beast Handlers can merge other beasts of their kind into one, drastically increasing that one beast's attack power. Higher tiers contribute more power but also have a higher maximum strength.
* InjuredVulnerability: Starting from the Velociraptor, dinosaurs will deal bonus damage to stunned bloons. This comes in handy with the fourth and fifth tiers, which have wide-reaching stuns.
* LandSeaSky: The three types of beasts it can control. The middle path focuses on land-based predators, the top path on ocean-dwelling ones, and the bottom path on predatory birds.
* MagikarpPower: Beast Handlers are somewhat unremarkable without sufficient upgrades or beast power, and will need a ton of additional leveled Handlers if they want to acquire a max power Beast, on top of the Tier 5 upgrades outright being barred unless at least four Tier 4 Beast Handlers of that type are on the screen. All of this is a process that can take an extremely large money and space investment, especially since the Handlers assisting the primary one are effectively dead weight. However, investing in Beast Power will ''dramatically'' improve their abilities and sometimes give them completely new ones - any max power Beast is a force to be reckoned with for its tier, and a max power ''Tier 5'' is one of the strongest normal towers available.
* MechanicallyUnusualClass: Is it ever! For starters, the moment you upgrade a Beast Handler, it's no longer the monkey itself that does the attacking, rather relying on its animal to do all the fighting, which can be repositioned to any location in its range. Additionally, Beast Handlers have their own unique "merging" system, where multiple beasts of one type can combine into one to dramatically increase its power. On top of that, the Beast Handler also can't be sacrificed, buffed by Alchemists, nor are able to be repositioned with Support Chinook (a restriction that is typically for the non-monkey towers).
* OneHitKill: At its top path, starting from the Great White, it’s able to instantly pop bloons by dragging them to the water. As it gets upgraded into higher tiers and increases in Beast Power, it can drag stronger and stronger bloons. At its strongest, it can even do this to ''[=BADs=]'' (though only until Round 150. They attack like normal otherwise).
* ShockwaveStomp: Starting from the Tier 4 Tyrannosaurus Rex, the dinosaur beast will gain the ability to stomp the ground, damaging and stunning all bloons up to [=ZOMG=]s in range. The Giganotosaurus improves this ability by extending its duration and making the shockwave hit the whole map.
[[/folder]]
[[folder:Cave Monkey]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/cave_monkey.png]]
'''Class:''' Item
A secret tower exclusive to the map "Frozen Over". It is stuck under the frozen lake, but can be freed if a Mortar Tower shoots at its location enough times, which causes it to appear in a set location near the start of the map. Its only attack consists of swinging its club, which stuns affected Bloons (including [=MOABs=]), and it cannot be upgraded.
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* AllCavemenWereNeanderthals: The Cave Monkey is bigger and more brutish than most other monkeys.
* BigOlEyebrows: Its bushy eyebrows contribute to its savage, primitive look.
* ContemporaryCaveman: After being [[HumanPopsicle frozen under the surface of a lake]] for who knows how long, it can be freed by a modern artillery cannon and recruited to join the fight against the Bloons.
* EasterEgg: Only appears on one map, and has a specific requirement to get him.
* HumanPopsicle: It can be seen frozen solid in the ice of the "Frozen Over" map.
* PeltsOfTheBarbarian: The Cave Monkey is dressed in a generic spotted fur drape similar to those worn by stereotypical cavemen.
* PrimitiveClubs: Befitting a caveman (or, cave monkey in this case), it wields a large wooden club capable of stunning even MOAB-class bloons.
* SecretCharacter: Prior to ''[=BTD6=]'' Patch 17.0, it was just a background decoration on one map. After that patch, it can be temporarily unlocked for a single game by having a Mortar Tower fire at it several times.
[[/folder]]
[[folder:Dungeon Statue]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/capture_413.PNG]]
'''Class:''' Item
A secret tower that only appears in "Dark Dungeons". By clicking on both torches and then the statue in the middle and then paying $50,000, the statues comes to life and starts attacking the Bloons. It can be upgraded to deal more damage.
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* AwesomeButImpractical: Despite dealing a lot of damage, it is very expensive to summon and upgrade so it isn't used very often.
* RecurringElement: Like the temple on the Monkey Temple track in ''[=BTD4=]'', it's a map fixture which can be turned into a powerful tower by paying money.
* SecretCharacter: Only appears on one map, and the requirement to unlock it isn't said in-game.
* ShockAndAwe: Its orb shoots a bolt at the Bloons.
* ShoutOut: Its pose is a reference to [[https://knowyourmeme.com/photos/2259810-pondering-my-orb the cover]] of the ''Franchise/TheLordOfTheRings'' gamebook ''Middle-Earth Quest: A Spy In Isengard''.
[[/folder]]
