Characters / Terraria Calamity

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Pre-Hardmode Bosses

    Desert Scourge
The desert sand stirs...

Once a mighty ocean worm that destroyed the Ocean Kingdom, its home has been dried up by Calamitas and it has been forced to become a desert worm. It's the first Calamity-exclusive boss available when you start the game, and is meant to be fought in the Desert after King Slime and before the Eye of Cthulhu.

The Desert Scourge drops various water-themed weaponry/equipment, and gives all the ingredients required to make Victide Bars, an early crafting material required to make beginner-level equipment.
  • Art Evolution: It went from a blue worm into a drier-looking brown worm, which looks more terrifying than its old sprite.
  • Contractual Boss Immunity: Unlike the vanilla worm bosses, the Desert Scourge reduces the damage of piercing weapons with every segment they pierce, which massively reduces the damage they would normally cause to it - a trait shared by a number of the Calamity worms and the Revengeance/Death Mode versions of the vanilla worms.
  • Dishing Out Dirt: In Revengeance Mode, it gains the ability to rapidly fire sand blasts at players.
  • Eyeless Face: Appears to just have empty sockets instead of actual eyes.
  • Flunky Boss: Summons Dried Seekers as you damage it.
  • Foreshadowing: Its lore makes mention that it was weakened due to a lack of food and water, exactly what the Aquatic Scourge actually does have.
  • How the Mighty Have Fallen: This thing went from being a force capable of wiping out an entire kingdom to a dried-up, early-game boss.
  • Leitmotif: Guardian of the Former Seas.
  • More Teeth than the Osmond Family: Both sprites have plenty of teeth.
  • Names to Run Away from Really Fast: Ironically, it's the easiest Calamity Boss.
  • Sand Worm: That used to be a water worm, no less.
  • Segmented Serpent: Likely the first Worm boss a player will fight.
  • Took a Level in Badass: Gains a boost in stats when Skeletron is defeated.
  • Wake-Up Call Boss: As a worm enemy, it's very hard to dodge its attacks unless you have some sort of vertical mobility or dash. The earliest you can get an accessory that lets you dash is after beating the Eye of Cthulhu, the very next boss, and in the early-game very few items that enhance your vertical mobility are readily available.
  • Worf Had the Flu: Pretty much why it's fought so early: Its home has been dried up, and it's been weakened by living in an environment with little water.
  • Wolfpack Boss: In Revengeance, you have to fight 3 of them at once.


A giant crab made of mushroom mycelia that can only be spawned in Glowing Mushroom biomes. It is intended to be fought before the Eater of Worlds/the Brain of Cthulhu, but after the Eye of Cthulhu.

Crabulon drops numerous mushroom-themed weapons, and drops the Mushroom Plasma Root in Revengeance which permanently boosts your Rage Mode damage.
  • Art Evolution: The new but unreleased sprite is much more accurate to normal crabs, with a lot more detail as well.
  • Death from Above: Its main attack is to fire explosive mushrooms which rain down on the player. It also rains Crab Shrooms from the sky.
  • Gentle Giant: Zigzagged. While it will fight back if you hurt it, it doesn't go out of its way to fight you, and if you kill it once you get an item that makes it completely passive when equipped.
    • Subverted nowadays, where it’ll attack if you don’t attack within 7 seconds.
  • Giant Enemy Crab: Well, yeah. Downplayed because it isn’t as big as many other bosses, but it still towers over the player.
  • Flunky Boss: While Crabulon is capable of directly fighting you, most of the challenge in its fight comes from the fact that it fires out huge clumps of Mush Bombs that descend across the screen and deal massive damage when they hit the player.
  • Leitmotif: 1NF3S+@+!0N.
  • Mushroom Man: Downplayed, being a crab and all.
  • The Last of These Is Not Like the Others: The only one of the pre-Hardmode bosses to have a leitmotif without a guitar in it.
  • Ultimate Life Form: Its lore entry describes it as this.

    The Hive Mind
Rotten cysts are oozing from the corrupt land...
Click here to see its second phase 

A giant colony of Eater of Souls, roughly shaped like a brain, that serves as a means of spreading and sustaining the Corruption. It's intended to be fought in Corruption Worlds after defeating the Queen Bee, but before fighting Skeletron. Notably, it is spawned naturally after destroying a Hive Cyst, which is an uncommon enemy that spawns in the Corruption after Eater of Worlds is beaten.

It drops dark-themed equipment, along with True Shadow Scales which are used to make higher-level Corruption gear. Killing it (or its Crimson counterpart) generates Aerialite Ore in your world.
  • Art Evolution: The eyes on its body don't resemble the eyes of Eaters of Souls anymore, now having turned into Yellow Eyes of Sneakiness. It also gained four small legs that it uses for landing, two tubes that constantly pump out Corruption in its first phase, its Demonite "crown" is now composed of 6 plates that twitch during the fight. And it now has holes all over its head, which would definitely bring Trypophobia to mind. Oh, and it has become smaller, too.
  • Brain Monster: A giant grey brain-like atrocity made up of rotting flesh and pockmarked with eyeballs, with a crown of bony spikes and Demonite.
  • Body of Bodies: This thing is made up of countless Eater of Souls that have merged together into this monstrosity.
  • The Darkness Gazes Back: Its second form invokes this, with its eyes lighting up within the numerous holes in its body.
  • Flunky Boss: Spams various Corrupt enemies as it loses health, which include Hive Blobs, Dank Creepers, Eaters of Souls and Devourers.
  • Hive Mind: Hey, it's in the name.
  • Leitmotif: The Filthy Mind.
  • Lightning Bruiser: To counteract its slow speed, it can teleport very close to you to deal some strong contact damage.
  • Load-Bearing Boss: Subverted. Yharim presumes that killing the Hive Mind will not put an end to the Corruption. And it shows; upon defeating the Wall of Flesh, which, by that point, the player should've killed the Hive Mind by now, the spread rate of the Corruption actually intensifies just like in the vanilla game.
  • Marathon Boss: The battle tends to play out like this; It's got high health and has long teleporting periods, but will also hit you pretty infrequently.
  • Mighty Glacier: Its second phase, where it hits pretty hard and has higher health, but it's fairly slow.
  • Stationary Boss: During its first phase, it is completely immobile, and has to rely on swarms of Mooks to defend itself.
  • Stone Wall: Its first phase, where contact damage is very minimal and it cannot move, but has a fair amount of health and enemies to keep the player distracted.
  • Suspiciously Similar Substitute: To the Brain of Cthulhu from the base game. The similarity used to be even stronger, as the Hive Mind and Brain of Cthulhu once shared a very similar AI.
  • Teleport Spam: Loves to do this in its second form, punctuated with projectile bursts which inflict Cursed Flames.
  • The Worm That Walks: A colony of creatures travelling in a group, combining their abilities to form a much more powerful being.
  • Turns Red: Once you deplete its first health bar, it uproots itself and begins charging at players.
  • Yellow Eyes of Sneakiness: Hive Mind's eyes in its second phase resembles this.

    The Perforators
Bloody cysts are erupting from the crimson's flesh...

A trio of worms that were once a single Eater of Worlds, before adapting to live in the Crimson and becoming parasites within the Brain of Cthulhu, which turned into the Perforator Hive once it was destroyed. They are intended to be fought in the Crimson before Skeletron but after Queen Bee in Crimson Worlds. Notably, they will spawn naturally after killing a Perforator Cyst, which is an uncommon enemy that spawns in the Crimson after the Brain of Cthulhu is defeated.

They drop equipment based around blood and flesh, and also drop Blood Samples which are used to make higher-level Crimson gear. Killing it (or its Corruption counterpart) generates Aerialite Ore in your world.
  • Art Evolution: The Perforator Hive has become a lot more mushroom shaped, with faces with rows of sharp teeth across its body and a shifting eye in the center. The worms, on the other hand, look much more terrifying than before by having their own Body Horror amplified.
  • Back from the Dead: The Perforator Hive (used to) resemble a floating chunk of the Brain of Cthulhu. Considering that the Perforators used to be parasites within the Brain of Cthulhu before it died...
  • Bloody Murder: The Perforator Hive's main attack, shooting a shotgun spread of blood into the air to rain down on the player.
  • Body Horror: Good lord. Not only do the Perforator worms themselves look grotesque as all hell, resembling twisting and infectious masses of raw flesh, the Perforator Hive has an attack that causes your blood to boil. The debuff inflicted by said attack is named Burning Blood. And its tooltip? "Your blood is on fire."
  • Bread, Eggs, Breaded Eggs: The Crimson + The Corruption = This atrocity.
  • Cyclops: Arguably the only trait it retains with the Brain of Cthulhu.
  • Death from Above: The Perforator Hive's main attack is raining red blasts from above that inflict the Burning Blood debuff.
  • Flunky Boss: After the Perforator Hive takes enough damage, it spawns one of the Perforators proper; the Hive (the main boss) can only be killed after killing all three worms. It will spawn them in order from weakest to strongest.
    • In addition, it spams Perforator Minis once the larger ones are killed.
  • Fragile Speedster: The first Perforator Worm, with the lowest attack and health but the highest speed.
  • Gameplay and Story Integration: The lore for the Perforators states that they were parasites within the Brain of Cthulhu before it was killed. Sure enough, their hive's old sprite resembled half of the Brain of Cthulhu flipped on its side.
  • Jack-of-All-Stats: The second Perforator Worm, with middling stats in comparison to the other two.
  • Kill One, Others Get Stronger: As more Perforator Worms die, the surviving ones gain speed and attack boosts.
  • Lamprey Mouth: The largest worm has this.
  • Leitmotif: Blood Coagulant.
  • Meaningful Name: Named after the Perforator veins. Can also be a Double Meaning, as to perforate is to pierce/make holes in something, like how the worms would pierce out of the ground, supported by the first Perforator's needle-like mouth.
  • Mighty Glacier: The last Perforator Worm, the strongest and tankiest but also the slowest.
  • Overdrawn at the Blood Bank: If all of those shots from the Perforator Hive are any indication.
  • Puppeteer Parasite: The Perforators evolved into this inside the Brain of Cthulhu. If they lose their host, they burrow as a group to the depths of the crimson and wait for a new host to come across them. Unluckily for you, their new host is you.
  • Segmented Serpent: The Perforators, obviously.
  • Villain Team-Up: Sort of; An Eater of Worlds from the Corruption with the Brain of Cthulhu from the Crimson.
  • Was Once An Eater of Worlds
  • Yellow Eyes of Sneakiness: Their resprites gave all of them this, the worms in particular having numerous that somewhat resemble the Hive Minds.
  • You Don't Look Like You: Said to be the reanimated Brain of Cthulhu, but the resprite heavily changed the hive's design to make them look more distinct.

    The Slime God
Blighted sludge spreads throughout the world's evil...

A mutated bacterium that absorbed enough matter to become the godlike control unit of all slimes, who created the Ebonian and Crimulan Slime Gods to protect it from all possible threats.note . It is the final Pre-Hardmode boss in the mod, and is intended to be fought after Skeletron and before the Wall of Flesh.

The Slime God drops slime-themed weapons and Purified Gel, which is used to make Statigel armor and other slime-themed weapons. In Revengeance, it notably drops Purified Jamnote  (which allows players to become temporarily impervious to harm) and the Electrolyte Gel Pack (which permanently shortens your Adrenaline charging time).
  • The Assimilator: It gained intelligence by consuming other beings, until it eventually gained telekinesis as well.
  • Asteroids Monster: Each Slime God can split into 2 when at half health.
  • Blob Monster: Of course.
  • Flunky Boss: Not only does the Slime God delegate most of the fighting to the Crimulan/Ebonian Slime Gods, even those can summon waves of minions when hurt.
  • Foreshadowing: From its lore item, "If this creature were allowed to combine every slime on the planet then it would be nearly unstoppable." The result of this is Goozma, the one of the Superbosses for Calamity Mod.
  • Fragile Speedster: The Slime God Core is incredibly fast and hits like a truck, but it has pitiful HP (a measly 800 in Normal Mode, and only 4000 in Death Mode).
  • From Nobody to Nightmare: From a simple bacterium to a massive and immensely powerful god.
  • Gravity Screw: Getting hit by the Slime God Core will inflict the Distorted debuff, causing you to float in midair and making it harder to dodge the Slime Gods' attacks.
  • Grenade Spam: Both Slime Gods and the Core can fire colored orbs that linger in the air before exploding.
  • Leitmotif: Return to Slime.
  • Magic Knight: Powerful melee and ranged attacks, the Ebonian Slime God leaning for stronger ranged shots while the Crimulan Slime God has higher contact damage.
  • Lightning Bruiser: The Ebonian/Crimulan Slime Gods are far faster than you think they are.
  • Shielded Core Boss: The actual Slime God is invulnerable until the other two Slime Gods are killed.
  • Standard Status Effects: The lesser Slime Gods inflict these, with the Ebonian Slime God inflicting Mana Sickness (reduces magic damage), the Crimulan Slime God also inflicting Mana Sickness (Cursed in Expert and above, which stops you from using items), and both inflicting Brimstone Flames (a Damage Over Time effect that inflicts 40 HP/sec). The Slime God proper inflicts some more... unorthodox conditions, however.
  • Time Abyss: The Slime God itself is one of the very first creatures to ever come to exist in the Terrarian's world.
  • Turns Red: After the two lesser Slime Gods are killed, the Slime God proper completely changes his attack patterns, attempting to ram you and launching barrages of energy blasts.



A two-legged seahorse-like miniboss found in the Underground Desert, possibly the former ocean where Desert Scourge and Amidias came from. It drops materials to make Victide Bars and an accessory which allows you to release an explosion of sparks when damaged.
  • Art Evolution: It has become from a seahorse with legs into a brown, drier-looking one just like the Desert Scourge. Combined with its hind legs, it has become more akin to a horse, fitting for its implied nature as a Seahorse Steed.
  • Armless Biped: It has a pair of hind legs, but it has no forelegs.
  • Butt-Monkey: When it appeared as though it had a boss theme made for it, it turned out to be a Halloween joke, with the Devourer of Gods breaking in to steal the show. Two months later, it’s confirmed it wasn’t getting a theme.
  • Leitmotif: Subverted. It gets a grand total of five seconds of "Seahorse Scrutiny" before the entire forest burns to a crisp. Few months later, DM DOKURO says he will not be getting a theme.
  • Making a Splash: Fires barrages of water shots at the player.
  • Jump Scare: Is one of the few pre-hardmode monsters that can move through blocks, causing this sometimes.
  • Seahorse Steed: Implied, given that it looks like it’s wearing something akin to a horse tack.
  • Unexpected Character: At first, it appeared to have its own theme being made, but this was actually a joke, being a set up for Devourer of Gods' final form's theme.

    Cloud Elemental
A hardmode miniboss akin to the Sand Elemental, originally revered as a deity like the other Elementals, and just like them, forgotten with the passage of time. Found at the Floating Islands or the Ocean. Drops a beam sword and an accessory which allows you to summon her as an ally.

    Earth Elemental
A hardmode miniboss found in the Underground and Cave layers, and another one of the elementals. Originally a part of a scrapped boss idea. Drops several earth-themed weapons and a consumable which allows you to summon a Sandstorm.
  • An Axe to Grind: Its arms are shaped like massive axes.
  • Armor Is Useless: Despite being visually covered in battle armor, it has the lowest HP of all the Elementals.
  • Art Evolution: Arguably the most drastic one, from a winged, two legged horse to a massive, humanoid set of armor.
  • Blade Below the Shoulder: Its arms are gigantic stone axes.
  • Bullfight Boss: Its primary attack beyond flying into the player is to charge at them.
  • By the Lights of Their Eyes: Only one of its eyes is visible as its only possible facial feature.
  • Cute Monster Girl: Defied. It’s a monstrous humanoid made of stone.
  • Dishing Out Dirt: Can fire bursts of explosive rocks along with its physical attacks.
  • Elemental Embodiment: Of earth.
  • Gladiator Games: Its overall design resembles a gladiator's set of armor. This may coincide with its previous design being a horse.
  • Glass Cannon: Less defenses and health than the Cloud Elemental, but hits harder.
  • Glowing Eyes of Doom: Shows a single glowing eye through its helmet.
  • Guys Smash, Girls Shoot: It is this given the other Elementals are female and focus more on ranged attacks, while the Earth Elemental mostly uses physical rams and only uses projectiles as a secondary attack.
  • Fragile Speedster: Surprisingly quick given its size and can deal good damage, but doesn't have exceptionally high health.
  • Heel–Face Turn: Averted. It lacks a summoning item that would make it a minion like the other Elementals,
  • Jump Scare: Its ability to phase through the ground can cause these.
  • The Last of These Is Not Like the Others: Runs on this trope. The Cloud, Sand & Brimstone Elementals and the Siren are Cute Monster Girls who focus on using ranged attacks and can be summonable minions. The Earth Elemental is a monstrous armored humanoid that likes to attack targets by ramming into them, and can’t be summoned due to it lacking such an item.
  • No-Sell: Immune to knockback.
  • Ramming Always Works: It tries to attack the player by flying at them.

A plague has befallen the Jungle...
The standard infantry units for Yharim’s army, being Queen Bee corpses intertwined with machinery. The heavy artillery variant, Plaguebringer Goliath, serves as the King Mook. Spawns in the Jungle randomly, and drops Plague Cell Canisters.
  • Boss in Mook Clothing: A surprisingly tough miniboss, formerly the hardest one to fight. The record has since been topped by the Abyssal Minibosses, with the Mauler being even more damaging than the Plaguebringer and having 12 times more HP than it.
  • Bee Afraid
  • Degraded Boss: Inverted. They're weaker versions of the Plaguebringer Goliath that appear before the boss itself. In fact, it is required to kill regular Plaguebringers in order to craft the summoning item for the Plaguebringer Goliath.
  • Flunky Boss: Can summon small groups of Plague Chargers to assist it in battle.
  • Lightning Bruiser: Like the Plaguebringer Goliath, it is fast, relatively sturdy and can strike the player with tough blows, both from its rams and its ranged rocket/stinger attacks.
  • Names to Run Away from Really Fast
  • Palette Swap: Nearly identical to Plaguebringer Goliath, with green eyes and a slightly lighter shade of black for its body.
  • Plague Master: They’re infamous for this, spreading it wherever they go.
  • Poisonous Person: By extension of the above trope.
  • Sickly Green Glow: The recurring theme for Plaguebringers, present even in their coloration.
  • Warm-Up Boss: More or less served as this for the actual Plaguebringer Goliath, who fights similarly to the standard units.

    Abyssal Minibosses 
The abyssal spirits have been disturbed...

A number of the creatures that lurk in the deepest regions of the Abyss are strong enough to be considered Minibosses on their own. Most of them will only retaliate if attacked or approached, and most of them drop unique items in addition to the standard Post-Plantera Abyss drops of Depth Cells and Lumenyl. The Mauler is an exception, living in the Sulphurous Sea above the Abyss instead.

A massive, mutated shark which lives in the Sulphurous Sea. It uses incredibly dangerous melee strikes and can also spit acid blasts. If lured out of the water long enough, it'll explode violently. Drops Shark Fins and a ranged weapon post-Polterghast.
  • Boss in Mook Clothing: Even though it's just a miniboss, and the weakest of the Abyssal Minibosses at that, it still has more health than the Aquatic Scourge, which is the actual boss of the biome.note 
  • Jump Scare: What differentiates the Mauler from the other Abyss minibosses is that it spawns on the surface. While you have to dive all the way down to the bottom layers of the Abyss to find the other bosses, this one can spawn the instant you try to enter the area. Combine this with the fact that it can spawn at any time in the game, new players are sure to get jumped by this thing at least once.
  • Leitmotif: Averted, it's the only miniboss relating to the Abyss without one.
  • Lightning Bruiser: It has a whopping 360,000 HP, can deliver nearly instakill attacks, and swims incredibly fast. It can even take massive leaps out of the water to surprise unwary players.
  • Poisonous Person: Spits acid to attack from range.
  • Taking You with Me: If you take it out of water for too long, it will explode into a massive nova of acid that's liable to kill any players standing too close to it when it happens. It also drops no loot as a result.
  • Threatening Shark: An acid shark.

Colossal Squid
A gigantic, pale squid which resides in the third layer of the Abyss. A deceptively fast, bulky creature, it attempts to crush players underneath it with large leaps towards them. Uniquely drops Black Ink and a powerful summon weapon post-Polterghast.

Reaper Shark

A predatory beast that spawns in the third and fourth layers of the Abyss, armed with a potent cloaking ability. Reaper Sharks will remain invisible until provoked, upon which it will aggressively ram into players. Always drops a Cloaking Gland to make Anechoic Coating, and can drop an item used to make a potent accessory. Post-Polterghast, it will begin dropping a deadly throwing weapon as well.
  • Art Evolution: Mere days after its release one was made for it, looking considerably more muscular and brutish.
  • Blade Below the Shoulder: There are evident elbow blades on the Reaper Shark's arms.
  • Expy: While it's not evident in as many ways as the Eidolon Wyrm, it is mildly based off of the Reaper Leviathans from Subnautica.
  • Hell Is That Noise: They will emit a loud roar if it draws too close to you or if you attack it.
  • Invisibility: It has the ability to cloak itself, with it only uncloaking if enraged.
  • Leitmotif: Shares Threats of the Ocean Floor with the other Abyss Minibosses.
  • Lightning Bruiser: It's decently fast, deceptively bulky and can easily shave off massive chunks of HP with each strike.
  • Meaningful Name: Its tail, which can be looted from it as a weapon named "Valediction", looks like a sickle, which is the signature weapon of The Grim Reaper.
  • Sea Monster: A vicious, shark-like predator with invisibility powers.
  • Turns Red: When at half HP, it will begin to use constant, rapid charges like Duke Fishron.
  • Threatening Shark: One with fists.

Eidolon Wyrm
Massive, ghastly sea serpents that spawn in the third and fourth layers of the Abyss and are armed with a wide array of deadly attacks. They will only attack if struck first, but pack immense amounts of power even for Abyss enemies. While the smaller juveniles can spawn anytime, the gigantic and more powerful adults will only spawn after Polterghast is killed.

Both of them will drop a number of items post-Polterghast, most notably an extremely dangerous magic gun and sword.
  • An Ice Person: They have the ability to fire frozen spikes like Lunatic Cultist's at any would-be aggressors.
  • Attack Its Weak Point: Attacks will phase right through them unless they hit its head. On the flip side, an Eidolon Wyrm's head is the only part of its body that can deal contact damage to you.
  • Berserk Button: Using the Rod of Discord in the Abyss will not only immediately spawn an Adult Eidolon Wyrm near you, but instantly trigger its aggressive state as well.
  • Bonus Boss: Both of them never need to be fought unless you want their rewards.
  • Boss In Mooks Clothing: The Juvenile packs incredible defense, dangerous attacks, and clocks in at 330,000 HP. The Adult, on the other hand, is by far the strongest Miniboss in the game. Not only does it have its attack power magnified exponentially, but it boasts a whopping 30,000,000 HP - more than every other boss in the game. To add to this, upon angering it by using the Rod of Discord in the Abyss, a status message will pop up to tell that an Eidolon Wyrm has awoken, something that the game otherwise only do with actual bosses.
  • Damage-Sponge Boss: Packing the aforementioned 30,000,000 HP, a surprisingly high defense of 300 (almost as much as Supreme Calamitas), and the fact that only its head is vulnerable, an Adult Eidolon Wyrm isn't going down without some serious effort on your part.
  • Dude, Where's My Reward?: The Adult is one of the strongest enemies in the game, with stats comparable to that of superbosses. And if you manage to kill one, it drops the exact same items as its Juvenile counterpart. Justified, as they were intended to be a glorified Dungeon Guardian to stop players from using the Rod of Discord in the Abyss.
  • Expy: They're essentially Ghost Leviathans from Subnautica, except with unexplained magical powers, two of which are similar to the Lunatic Cultist's for whatever reason.note 
  • Gentle Giant: Despite their enormous size and deadly combat abilities, Eidolon Wyrms are completely harmless until you attack them first - which stands out since most Abyss enemies will attack you if you draw too close. The only exception to this rule is the Adult Eidolon Wyrm spawned by using the Rod of Discord in the Abyss, which is always aggressive.
  • Hell Is That Noise: They will occasionally let out an ethereal, menacing roar if they're angered.
  • Leitmotif: Shares Threats of the Ocean Floor with the other Abyss Minibosses.
  • Lightning Bruiser: The Adults are surprisingly fast for their size and can hit you for enough damage to One-Hit Kill anyone not wearing endgame armor - and that's not putting its magic attacks and immense durability into account. The Juveniles, while much weaker, are still nothing to sneeze at either.
  • Mind over Matter: They can occasionally fling the player in a random direction through telekinesis.
  • Power Glows: Like their inspirations, many parts of their bodies glow in the dark. Their hammerheads also trail blue particles.
  • Sea Monster: Massive and terrifying sea serpents which look like ethereal beings and possess strange powers.
  • Segmented Serpent: As worms, this comes with the territory, however unlike most worms its head is the only part that can deal damage and be damaged. The Adult Eidolon Wyrm deserves mention for being absolutely massive.
  • Shock and Awe: They can summon giant Magnet Spheres that fire lightning bolts at their foes, much like the Lunatic Cultist.
  • Super Toughness: If having even more HP than the supposed strongest worm boss, the Devourer of Gods, wasn't enough, the Adult Eidolon Wyrm has 300 defense, while the Devourer has none.note 

    Great Sand Shark
A planned miniboss to be fought in the Desert.

Hardmode Bosses

The ancient ice spirits have been unbound!
After the archmage Permafrost refused to help Yharim's plans, Yharim sealed him, along with his castle and magic, in a frozen prison that transformed in the creature called Cryogen. Sealed away by Yharim after he realized it was too powerful and erratic for him to control, it has been released at the genesis of Hardmode. It is the first boss intended to be fought once Hardmode starts, right before the Destroyer. Can only be fought in the Snow biome.

Drops a number of ice-based equipment, and also drops Frigid Bars which can be used to craft hardmode equipment. Killing Cryogen also causes Cryonic Ore to generate within your world.
  • Action Bomb: Throughout its battle, it summons small snowflake-like bombs that explode into showers of icicles.
  • Animate Inanimate Object: A giant ice cube with crystals around it to look like a snowflake.
  • An Ice Person: Well, what did you expect from an oversized living snowflake?
  • Beam Spam: Its primary means of attack are radial bombardments of freezing blasts.
  • Confusion Fu: Has a whopping total of six phases, with a different attack pattern in each.
  • Death from Above: Starting from its second phase, it can try to rain icicles down on the player if they are below it. In addition, one of its later attacks has it launching spreads of icicles into the air, which crash down on enemies.
  • Empathic Environment: As it nears death, it starts snowing harder and harder.
  • Everything's Better with Spinning: In its last phase it starts to spin erratically.
  • Flunky Boss: Summons Cryocores and Aurora Spirits as it loses health.
  • Leitmotif: Antarctic Reinforcement.
  • Marathon Boss: It has six phases, more than the True Final Boss of the vanilla game!
  • Ramming Always Works: Its last phase has it abandon all of its projectiles and simply try to fly right into you at top speed.
  • Regenerating Shields, Static Health: Cryogen has an ice barrier that must be destroyed before damaging it, which will also explode into a burst of shots when broken. It will regenerate several moments after being destroyed.
  • Teleport Spam: Will do this in his semifinal phase.
  • Turns Red: In Expert Mode, its damage and defense rise as it takes more damage.
  • Was Once a Man: Cryogen used to be the Archmage of Ice Permafrost, Yharim's most bitter enemy, but after Permafrost refused to help Yharim he was destroyed by Yharim's magic and reborn as a mindless hunk of magical ice.

    Brimstone Elemental
Every rose has its thorn. This one's thorns just happen to make you die a horrible, fiery death.
A demonic elemental that used to be revered as a god, who eventually lost power after humanity began to lose faith in her. She is summoned in the mod-exclusive Profaned Crags, and is intended to be fought after the Destroyer and before the other two Mechanical Bosses. Gains a buff in stats if Providence is defeated.

Drops a number of brimstone weapons and accessories, and also drops Bloodstone and a special mount after Providence is killed.
  • Art Evolution: Overall looks like a more polished version of its older sprite.
  • Catch-22 Dilemma: An unintentional one was created when it was introduced. It drops an accessory called Abaddon, which grants immunity to the Brimstone Flames debuff and makes the fight against Calamitas far easier. However, if your world was created before the Calamity Biome (now known as the Profaned Crags) was implemented, you have to kill Calamitas before you can spawn in the Calamity Biome, and since Calamitas is tough as nuts to beat without Abaddon...
  • Cheerful Child: The Brimling summon, stated to be a younger Brimstone Elemental, is adorable.
  • Curb-Stomp Battle: Was on the recieving end of one courtesy of Calamitas when she invaded the Underworld, due to being far weakened by a lack of faith.
  • Cute Monster Girl: It's a woman made of fire that has a rose made of brimstone for a lower body.
  • Cyclops: Sources say Brimstone Elemental was originally to have two eyes that fuse into one while she attacks, now she is a full on cyclops.
  • Death from Above: One of her phases has her try to fly above the player while launching brimstone fireballs, which create large lingering explosions on impact with blocks.
  • Defeat Equals Friendship: If you collected her Rose Stone, you can summon her to fight for you.
  • Elemental Embodiment: Of fire.
  • Full-Frontal Assault: It's completely naked, yet lacks any genitalia or nipples.
  • Flaming Hair
  • Gods Need Prayer Badly: As humanity began to reject the Elementals as they lost faith in them figured out the secrets of their magic, the Elementals in turn lost power to the point of many of them fading away, and the ones who survived were severely weakened.
  • High-Heel–Face Turn: Joins the player as a summonable minion if you obtained the Rose Stone.
  • Hold the Line: For one of its phases, it will retreat into its shell and become nearly immune to damage. You simply have to outlast it as it fires waves and waves of projectiles at you.
  • How the Mighty Have Fallen: She and her “sisters” make it look like Desert Scourge had it easy. Originally praised as goddesses, they lost their followers as the years went by. Unlike the others, however, Brimstone Elemental got it even worse, when Calamitas rained havoc on the underworld where the Brimstone Elememtal thrived, now rendered weak and vengeful against humanity.
  • Leitmotif: Left Alone.
  • Playing with Fire / Casting a Shadow: Uses brimstone fire attacks, which inflict a seriously damaging debuff called Brimstone Flamesnote . Come Revengeance+, and her shots also inflict Abyssal Flames, which is even worsenote .
  • Sad Battle Music: “Left Alone,” full stop.
  • Teleport Spam: Can do this in one of her phases. For good measure, she leaves explosive dust clouds in her wake.
  • Took a Level in Badass: Gains a large boost in stats when Providence is defeated.

    Aquatic Scourge
The sulphuric sand stirs...

The distant relative of the Desert Scourge mutated by the sulphuric waters above the Abyss. Due to its adaptations to thrive in the sulphuric ocean and an ample food supply, it is noticeably less hostile in comparison to its starved cousin. It can only be fought in the Sulphurous Sea, and can uniquely spawn by itself. It is intended to be fought after two Mechanical Bosses.

The Aquatic Scourge simply drops beefed-up versions of Desert Scourge's equipment.
  • Flechette Storm: Can fire a large number of homing needles to skewer you with.
  • Flunky Boss: Rapidly spawns Aquatic Seekers, Aquatic Parasites and Aquatic Urchins as it takes damage.
  • Gameplay and Story Integration: The Aquatic Scourge is essentially the Desert Scourge before its home was dried up. As such, not only does it fight like a much stronger Desert Scourge, but its drops are just souped-up versions of the Desert Scourge's own drops.
    • Also mentioned is its lessened aggression. Sure enough, it won't attack unless hit first.
  • Gentle Giant: While it is huge and quite powerful, it won't attack unless attacked first. Justified because unlike the Desert Scourge, it's not desperate for food.
  • Helpful Mook: Like other bosses, its presence prevents other enemies from spawning. However, it can spawn naturally and it won't attack unless hit first, making fishing much less stressful.
  • Homing Projectile: It rapidly fires homing needles at the player to attack.
  • Leitmotif: Outcast of the Sulphurous Seas.
  • Making a Splash: Rapidly fires blasts of sulphuric water to attack.
  • Poisonous Person: Can leave behind clouds of toxic gas as it moves.
  • Recurring Boss: A stronger, hydrated version of the Desert Scourge.
  • Segmented Serpent: Much like its predecessor.
  • Team Pet: Served as this for the moderators/cool guys’ server, preventing enemies from spawning while they fish.
  • Underground Monkey: Debatably the most prominent one, with it literally being the Desert Scourge except in the Sulphuric Ocean. This is downplayed as the fight plays out pretty uniquely in comparison.



A mysterious, extremely powerful mage whose family was put to death by a rivalling faction. After she wreaked bloody vengeance on her family's killers, she wandered to the Jungle, driven by a mysterious voice, where Yharim found her and recruited her into his army. But the good in her still existed, and eventually she betrayed Yharim to help some of his strongest enemies. The Jungle Tyrant then cursed her in a rage, and eventually the curse drove her insane and caused her to return to Yharim's forces, where he relinquished the curse in exchange for her utmost loyalty and unwavering cruelty towards all who would oppose him. She can only be fought at night and after the Mechanical Bosses, but is intended to be killed before Plantera. Becomes much stronger after Providence is killed.

Calamitas drops a number of useful weapons and accessories based off of her, and drops Bloodstone after Providence is beaten.

She is the first boss in the mod to have a "Superboss" form, Supreme Calamitas. This version of her is the True Final Boss of the mod, and is accordingly insanely difficult to beat.
  • Actually a Doombot: Regular Calamitas is just a clone. Supreme Calamitas is the real deal.
    Calamitas Doppelganger (Lore item): You are indeed stronger than I thought. Though the bloody inferno still lingers, observing your progress...
  • I Am Not Left-Handed: After you deplete her first health bar, she gets a second one, summons her brothers, and mocks you for underestimating her. To emphasize this, the Boss 2 theme from the vanilla game plays during Phase 1, before switching to Raw, Unfiltered Calamity after she enters Phase 2.
  • Art Evolution: She and her brothers were formerly recolors of The Twins. In her case, she was one of Retinazer. Now, she resembles a flaming wood-like eyeball.
  • Attack Drone: Can summon Life Seekers at low health which orbit her and shoot fireballs.
  • Beam Spam: She spams deadly lasers that split into more lasers. It only gets worse in Revengeance Mode.
  • The Dragon: She served as this to Yharim before her betrayal. Even afterwards, she holds a high rank within his forces.
  • Evil Brit: Her voice actress at the end of the video for “Left Alone” has a British accent.
  • Flunky Boss: She can summon her brothers Catastrophe and Cataclysm to assist her during her second phase (more clones of them several times in harder difficulties), the former of which charges and spits fireballs and the latter of which charges and breathes fire. She also summons rings of Life Seekers to protect her when at low health.
  • Fighting a Shadow: Turns out this Calamitas is just a watered down clone of the original.
  • Foreshadowing: How could she summon two Catastrophes and Cataclysms at once in Deathmode? They're clones, just like herselfnote .
  • Leitmotif: Raw, Unfiltered Calamity.
  • Mascot Mook: Well, more than a Mook, really, but she is featured heavily in the mod's logo and, to an extent, its name.
  • Names to Run Away from Really Fast: Her name means "disaster" in Latin, as well as bears resemblance to the English word Calamity.
  • No Good Deed Goes Unpunished: She betrayed Yharim and granted power to Braelor and Statis, two of Yharim's most valiant opponents... and was promptly inflicted with a horrific curse by Yharim, causing her to slip into insanity.
  • Playing with Fire: Launches fireballs in her second phase.
  • Red Eyes, Take Warning: She IS the red eye.
  • Shielded Core Boss: Takes Scratch Damage from everything until her brothers are destroyed.
  • The Dragon: Used to be this to Yharim before her betrayal.
  • Took a Level in Badass: Stats are increased when Providence is killed.
  • Turns Red: When you take down her first phase, she berates you for underestimating her, summons her 2 brothers and begins lobbing deadly fireballs.
  • Used to Be a Sweet Kid: She actually used to be a nice enough person as a kid. Then her family got killed, pushing her over the edge. Then she met Yharim, and things got even worse.
  • Villain Respect: Once you deplete half of her health in her second phase, she compliments your skill.
    Impressive child, most impressive...
  • Yin-Yang Bomb: Attacks using fireballs and lasers that inflict the Brimstone Flames debuff.

    The Siren and The Leviathan
The ocean depths are trembling...

The Leviathan is a massive angler fish who once terrorized the Abyss before becoming bloated and old, only surviving due to the help of the Siren, a mysterious feminine creature who befriended the beast. The duo have left the Abyss and now roam the ocean, the Siren would use her alluring figure and enchanting singing voice to lure unsuspecting fishermen before drowning them once they got too close, while the Leviathan would capture the local divers in its jaws by disguising itself as a massive underwater rock formation. They are intended to be fought after Plantera and before the Golem, but can theoretically be fought at any point in the game due to the way they spawn.note 

The Leviathan drops aquatic-themed weapons and accessories, and the Siren (both before and after activation) can drop some very useful acessories. Notably, if you beat it before Plantera, you will get an item which can be combined with one of Plantera's drops to craft any one of the Leviathan's own drops.
  • An Ice Person: The Siren can fire icy mist that freeze players.
  • Alluring Anglerfish: A giant-scale one with a mermaid lure.
  • Animalistic Abomination: A giant beast with fangs, claws, a siren lure, and beady eyes. And we only see half of it.
  • Animal Nemesis: Was this for the divers and fishermen of the area it had moved by, with folkore and myths being spread about the Siren in particular.
  • Art Evolution: The Leviathan goes from more curved and tuskless to a more ferocious, bumpy look.
    • Played up more with the lure; starting out as a recolor of a sprite, then becoming its own thing albeit rather plain, to a gorgeously designed and detailed siren.
  • Autobots, Rock Out!: “Forbidden Lullaby” amps up the heavy metal after gradually building up in intensity from “Siren’s Call” and “Siren’s War Cry”.
  • Battle in the Rain: A storm starts when the Lure spawns.
  • Barbie Doll Anatomy: For the Siren, at least.
  • Artistic License – Biology: According to its lore, once it became too big to move it willingly cut itself in half to increase mobility. How it didn't bleed out is anyone's guess.
  • Badass Adorable: The Siren is on the cute side of the monster spectrum, and can easily send you packing if you aren’t prepared.
  • Bait-and-Switch Boss: A bit literally in this case. Different than the norm however is that both are fought at the same time.
  • Bizarre Sexual Dimorphism: They minions it summons are apparently the males of its species.
  • Body Horror: The body we see now is only half of the creature, having split its back half off by using a falling cliff.
  • Bonus Boss: Downplayed, as it still has an "order" in that it should be fought before Astrum Deus, the Astrageldon Slime and the Golem, but it doesn't need to be fought at any time to advance forward like the others.
  • Bullfight Boss: The Leviathan likes to charge into the player a lot, dealing tons of damage.
  • Cheerful Child: Delve within the Abyss, and you can gain the Strange Orb. The item in question summons the adorable Young Siren. D'awww!
  • Confusion Fu: The Lure is already versatile, but with the attacks the Leviathan has as well, it’s hard to predict what they’re going to use next.
  • Conjoined Eyes: The old sprite for the Leviathan had Pupula Duplex, where in the eyeballs contained two yellow pupils.
  • Cute Monster Girl: Compared to the rest of the cast, the siren lure is downright gorgeous with a nicely detailed sprite to help.
  • Cuteness Proximity: Lampshaded by the Young Siren's Buff tooltip, calling it "Small and Cute."
  • Dark Action Girl: The Siren is, rather obviously, female and is ready to kick the player’s ass when they start the fight.
  • Death Is Cheap: The Siren can be killed off and later be summoned, now on your side, by using the Heart of the Elements, Siren's Heart or Strange Orb.
  • Decapitation Presentation: Uniquely, the Leviathan’s trophy is the only one to actually be a head; the Siren’s.
  • Deflector Shields: The ice shield that the Siren periodically creates can reflect certain projectiles like bullets and arrows.
  • Determinator: Being cut in half wouldn't stop the Leviathan.
  • Dishing Out Dirt: The Leviathan spits out massive boulders to hit the player with.
  • Distracted by the Sexy: The Siren Lure apparently looks like a mermaid to attract unsuspecting fishermen for the Leviathan to devour.
  • The Dreaded: The divers became leery of the once calm beaches due to the presence of the Siren and Leviathan.
  • Dual Boss: The fight consists of the Leviathan herself and her Siren. Both must be killed for loot.
  • Early-Bird Boss: Meant to be fought by Plantera, but as it can be fought at any time, it can show up as early as the start of the game. This can also potentially be an Inverted Trope because of said factor, possibly being able to be fought after the Devourer of Gods and Supreme Calamitas.
  • Elemental Embodiment: The Siren turns out to be this, being more or less the Water Elemental under a new name.
  • Empathic Environment: Beyond the aforementioned rain, the background turns pitch black once the Leviathan spawns.
  • Expy: Of Lurerre the Abysroid, both being hulking aquatic behemoths with a lure in the shape of a mermaid. This is agiven, as the lure, prior to an update, was a recolor with some tweaks.
  • Face Framed in Shadow: The top half of Siren’s face was hidden in her old sprite, with only her eyes visible.
  • Fan Disservice: An attractive mermaid acting as bait for a giant angler fish-like abomination.
  • Fat Bastard: The Leviathan was a vicious predator that at one point had grown so big that it cut itself in half to continue moving. It’s still slow regardless.
  • Female Monster Surprise: While the Siren is rather obviously female, what isn't as obvious is that the Leviathan also is. Truth in Television, as female angler fish are far larger and deadlier than the practically helpless males.
  • Flunky Boss: During the fight, Paraseas and Aquatic Aberrations will spawn and attempt to attack you.
  • Flying Broomstick: Well, possibly. The Siren's capable of flying and is often seen riding on top of her trident.
  • Flying Seafood Special: The Siren can fly around above the surface and the Leviathan can also spawn above the seas and chase you without even needing to be in the water. More unusual is the Leviathan capable of moving above the water.
  • Four-Element Ensemble: The Siren is part of this with the Sand Elemental, Cloud Elemental and Brimstone Elemental when the accessory Heart of the Elements is equipped, representing water and confirming its status as the Water Elemental.
  • Fragile Speedster: Not very tanky, but the Siren is quite quick, and her attacks come very fast.
  • Full-Frontal Assault: Just like the other Elementals, the Siren lacks clothing, but also has Barbie Doll Anatomy.
  • Glass Cannon: The Siren isn’t too bulky, but is very versatile and hard hitting with its attacks.
  • Glowing Eyes of Doom: The Siren appears to have this, even in some older sprites.
  • Generic Doomsday Villain: It’s never made clear why the Siren is trying to lure everyone to their deaths, but it’s implied it does so to help the Leviathan survive or out of revenge, given she met the Leviathan after her fall from grace.
  • Genius Bruiser: They both have signs of this. The Leviathan in particular for seemingly being just an animal is capable of forming strategies with the Siren and comes in when it’s aware trouble is starting to rise.
  • God Needs Prayers Badly: Like the other Elementals, the Siren too lost most of her power from a lack of faith. Unlike the other Elementals, she came back with a friend.
  • Half the Man He Used to Be: The Leviathan did this to itself by using a falling cliffside after having grown too large to move around swiftly. It survived.
  • High-Heel–Face Turn: The Siren Lure can be summoned (twice) as a minion after defeating it.
  • Horned Humanoid: The Siren has orange horns on the sides of her head.
  • How the Mighty Have Fallen: Given she’s one of the Elemental’s, she was ultimately forgotten in time by her followers. Unlike her sisters, however, she came back with the Leviathan by her side.
  • Human Head on the Wall: Well, as close as it can get given the context, but the Siren's decapitated head trophy.
  • Interspecies Friendship: A Mermaid and a giant Anglerfish. A little downplayed, as they both are aquatic beings.
  • It Can Think: The Lure is not actually an extension of the Leviathan, but a separate living entity that had helped the Leviathan survive by bringing it corpses of fishermen.
    • The Leviathan itself shows signs of this as well, being able to form a mutual bond between itself and the Siren, as well as forming a strategy with her.
  • Jerk with a Heart of Gold: The Siren may be luring people to their unwitting doom, but it does seemingly care a lot for its friend, the Leviathan.
  • Karma Houdini: Given that it’s possible that they won’t even be fought during the game, they can get away with sending fishermen and divers to their watery graves.
  • Kill One, Others Get Stronger: Defeat the Lure first, and the Leviathan will start attacking more frequently.
  • Leitmotif: "Siren's Call", "Siren's War Cry" & "Forbidden Lullaby", starting out with a somewhat somber melody that gradually gets more and more rocking.
  • Lightning Bruiser: In Expert Mode, the Leviathan charges at you a lot more than usual, which with its large physique makes it very hard to dodge.
    • The Siren can be this as well while the ice shield is up, especially in Revengeance mode where she attacks more aggressively and by using the Leviathan as a meat shield.
  • Make Me Wanna Shout: The Siren, rather obviously, uses quite a few sound attacks, like treble clefs.
  • Making a Splash: Siren’s very capable of doing this with attacks like bubbles and water spears.
  • Mighty Glacier: The Leviathan by itself is really tanky with 42,000 base HP and hits like a runaway frieght train, but it barely moves vertically.
  • Ms. Fanservice: The Siren, full stop.
  • My Name Is ???: The Siren’s name at first is three question marks.
  • No Ontological Inertia: Averted, as you can try to kill the Leviathan first and the Lure will still be attacking. Justified, as the Lure is an entirely separate living being.
  • Odd Name Out: The Siren is the only one elemental to not have "Elemental" in the name.
  • Off With Her Head!: The Siren is on the recieving end of this, given the trophy is her head.
  • Our Mermaids Are Different: They're the willing lures of giant monstrous anglerfish, for one, and two, they’re actually water elementals, as seen with the Heart of the Elements.
  • Palette Swap: The Siren was formerly this for Lurerre the Abysroid’s lure with some touch ups, but it is now averted as it has gotten two sprite redos.
  • The Power of Friendship: A recurring theme revolving around the Siren:
    • One possible theory for her seeking out the Leviathan is out of loneliness ever since she fell from grace like the other Elementals, and thus repaying the beast due to more or less being the closest thing she’s had to a friend.
    • What’s the name of the item that allows you access to a Super Mode? Siren’s Heart.
    • How about the Young Siren that helps provide light upon being summoned?
    • The best example would be the rare drop known as The Community, described as "The heart of the Terraria community", and is one of the best items in the game.
  • Ramming Always Works: The Leviathan will do this every now and then. The Siren will also attempt to ram players at low health.
  • Regenerating Shields, Static Health: The Siren has an ice shield that must be broken before you damage it; it can regain the shield if enough time passes.
  • Revenge: There’s implication’s this is Siren’s driving motivation, given that she’s leading humans to their deaths and the backstory for the Leviathan took place after the Siren and the other Elementals were forgotten and as a result weakened.
  • Ridiculously Cute Critter: The Leviathan pet you can get at the end of the game. Interestingly, it resembles its older sprite.
  • Schmuck Bait: The Siren initially appears as the harmless "???". Kill it, and the Siren will immediately attack you. It gets even worse in Death Mode, where both the Siren and the Leviathan will immediately attack together.
    • Also worth noting is that you can find the Siren Lure anytime, even right when you start the game. Any new player that kills it is going to be in for a nasty surprise...
  • Sirens Are Mermaids: The Siren lure sings, trying to bring in fishermen to be devoured by the Leviathan while having the shape of a Mermaid.
  • Slime Girl: Implied when the Siren is summoned by the Heart of the Elements, where she is a lot more blue and translucent than before.
  • Standard Status Effects: The Lure can inflict Confusion with its treble clefs, as well as the Glacial status with the icy mist, immobilizing and halving the defense of a target.
  • Start of Darkness: Letting the Siren be forgotten with the others with a loss of power as a result was NOT a good idea.
  • Stationary Boss: Downplayed, as it will still chase after you if you move horizontally, but it doesn't move nearly as much as other bosses.
  • Super Mode: You can actually get one by obtaining the Siren’s Heart, allowing you to turn into the Siren herself.
  • Super-Persistent Predator: The Leviathan just refuses to die, surviving near starvation and bisection and continuing to fight onwards.
  • Suspiciously Stealthy Predator: Somehow capable of pulling this off as well as the above trope, completely undetected until the Siren’s at low health.
  • Theme Music Powerup: At first, the Siren's theme is serene and unsuspecting. Then, when she begins her attack, the song picks up and gains intensity. And when the Leviathan itself finally shows up, the song descends into full metal territory.
  • Took a Level in Badass: The Siren is way more aggressive in Expert Mode than ever. The Leviathan also charges more frequently.
  • True Companions: The Siren seems to fit with the Leviathan in this trope.
  • Used to Be a Sweet Kid: The Young Siren summoned from the Strange Orb implies this, given all it does is hang around casting a light.
  • Villainous Friendship: The Siren had helped the Leviathan survive for a large amount of its life and is perfectly willing to help it out in battle.
  • Villain Song: Downplayed, as the Siren never really says a word, but it’s implied the Siren is the one that’s singing throughout all three phases.
  • Wake-Up Call Boss: By virtue of the fact that it can be fought at any time, it can potentially be fought before King Slime or the Eye of Cthulhu.
  • Yellow Eyes of Sneakiness: Both of them have it and are associated with stealth and trickery.

    Astrageldon Slime

A giant space slime, like a much harder King Slime. Meant to be fought on the Surface before Astrum Deus but after Plantera. Killing it spawns an Astral Meteor, but you need to kill Astrum Deus first in order to mine it.

Drops an abundance of Stardust and Fallen Stars, as well as a consumable called Astral Jelly. After Moon Lord is defeated in Revengeance, it becomes substantially more powerful in exchange for dropping large amounts of the 4 Celestial Fragments and a unique mount.
  • Art Evolution: Its sprite was formerly an orange Palette Swap of the Ebonian Slime God. Its new sprite is a purple-colored giant slime with an original pattern resembling a starry sky.
  • Beam Spam: Its only attack besides contact damage is to fire radial bursts and rapid barrages of cosmic beams.
  • Blob Monster: Of course.
  • Celestial Body: Its surface resembles a night sky.
  • Flunky Boss: As it loses health, it will spawn Astral Slimes in huge quantities.
  • King Mook: To Astral Slimes.
  • Leitmotif: "Cosmic Disgust".
  • One-Hit KO: When fought post-Moon Lord on Revengeance, its projectiles hit for an average of 6500 damage.
  • Playing with Fire: Its cosmic blasts resemble purple-and-gold fireballs.
  • Shows Damage: Much like King Slime, it gradually starts shrinking as it loses health.
  • Took a Level in Badass: Dear GOD. If you are playing in Revengeance mode, it becomes absurdly powerful post-Moon Lord in exchange for dropping more items. For reference, its laser attacks are known to One-Hit KO characters in Auric Tesla armor.
  • Teleport Spam: It will frequently vanish and reappear from a different angle to get the jump on players.
  • Turns Red: It starts off rather weak. As it takes damage, its damage, defense, and speed gradually go up.
    • However, its projectiles will do the same damage throughout the entire fight.
  • Unskilled, but Strong: The Astrageldon Slime has simple behavior similar to that of the normal King Slime, but makes up for it with high health and deadly attacks.

    Astrum Deus
May the stars guide your way.

A swarm of large, heavily armored space worms, meant to be fought at night after the Astrageldon Slime but before Golem. Killing it will allow the player to mine Astral Ore from Astral Meteors.

In addition to releasing the aforementioned lock on Astral Ore, it also drops some star-themed equipment for your troubles, including the Starlight Fuel Cell in Revengeance which permanently decreases your Adrenaline charging time.
  • Art Evolution: Like Brimstone Elemental, it looks a lot more polished than its older sprite.
  • Beam Spam: Much like Destroyer, it fires off lasers like a machine gun.
  • Bilingual Bonus: Its name means "Star God" in Latin.
  • Flunky Boss: Like Destroyer, it will spam Astral Probes as it loses HP.
  • Gravity Screw: Being near it inflicts Extreme Gravity, which massively impairs your flight.
  • Grenade Spam: One of the small worms will have a layer of orbiting probes that spew Astral Mines, stationary orbs that linger in the air before exploding. The frequency of the mine-laying increases with each worm killed.
  • Heavily Armored Mook: For a worm boss, Astrum Deus has abnormally high Defense, greatly lowering the damage output of any weapon that hits it. However, it is still vulnerable to piercing weapons unlike other worms.
  • Leitmotif: "Pest of the Cosmos".
  • Light Is Not Good: A pack of golden worms with bright yellow and purple lights.
  • Oxymoronic Being: In a retconned lore suggestion, Astrum Deus was an organic being of wood and stone.
  • Segmented Serpent: Like the other Worm bosses.
  • Shielded Core Boss: The main, most powerful worm is invisible and invulnerable until its 10 smaller counterparts have been destroyed.
  • Turns Red: The more worms you take down, the faster the worm with the orbiting probes will churn out Astral Mines.
  • Wolfpack Boss: You have to fight 10 of them at once in the first phase.

    The Plaguebringer Goliath

One of the bio-weapons that was a result of an experiment that Yharim conducted to weaponize the Queen Bees. However, unbeknownst to him, one of his head scientists had added a weapon that the Tyrant had deemed too deadly for use: Nanomachines that would cause victims to rot from the inside out while still being kept alive. The plague spread through the entire jungle, infecting entire hives, and rather than destroy the plagued bees Yharim instead made them his living weapons, turning them into some of his deadliest servants: the dreaded Plaguebringers. Meant to be fought in the Jungle after Golem but before Duke Fishron.

Killing it rewards you with various powerful plague-themed weaponry and equipment.
  • Action Bomb: In Revengeance, it can summon Plague Mines that chase players before exploding.
  • Artificial Zombie: A combination of this and Plague Zombie, being bees that have been infected by a nano-virus that turns the poor creature into a rotting carcass enslaved to Yharim’s will before being fitted with missile pods and armor plating. Oh, and they can spread their horrible condition to others too.
  • Art Evolution: Twice. At first rather plain, then a bit more detailed as a Queen Bee recolor, then a more sleek design with fang-like mandibles.
  • Bee Afraid
  • Big Creepy-Crawlies: Was originally a giant bee like the Queen Bee. It has since been transformed into an undead cyborg monstrosity.
  • Body Horror: Whatever parts of the Goliath's body that are not mechanical are rotted away from Yharim's virus. It’s pretty obvious that the things you fight are no longer alive by this stage. Hopefully.
  • Cyborg: After their infection, Yharim had them augmented with missile launchers and armor plating. Although it looks like they’re more machine than bee at this point, as their liquified remnants are dripping out of their armor.
  • Death from Above: When it says "MISSILES LAUNCHED, TARGETING ROUTINE INITIATED!!!", a couple seconds later it will call in a huge bombardment of artillery shells from above. You best hope you've got some sort of cover you don't want to get blasted to shreds.
  • Degraded Boss: Right after Golem is killed, weaker versions of itself simply called Plaguebringers can start showing up in the jungle, identifiable by their smaller size and green eyes as opposed to the Goliath's red.
  • The Dreaded: Feared both for their incredible destructive power and the murderous plague they spread in their wake.
  • Empathic Environment: It will tint the screen greenish when summoned.
  • Flunky Boss: Summons Plague Chargers constantly. In Revengeance Mode, it can spawn Plaguebringers as well.
  • King Mook: Serves as one for the Plaguebringers, down to their sprites being almost identical.
  • Leitmotif: "Fly of Beelzebub".
  • Lightning Bruiser: It's extremely quick, has a surprising amount of bulk, and hits like a truck. That's not even getting into its arsenal of explosive artillery...
  • Macross Missile Massacre: Constantly unloads enormous fusillades of rockets aimed at targets.
  • More Dakka: Besides firing volumes of rockets, one of its other attacks is to spray plagued stingers at the target. In Expert mode, these explode too.
  • Mechanical Monster: An abomination made of rotted flesh and metal that functions as a mindless killing machine.
  • Names to Run Away from Really Fast
  • Ninja Pirate Zombie Robot: A giant rotting undead robot bee armed to the teeth with military-grade weaponry and capable of spreading a deadly plague wherever it goes.
  • No Indoor Voice: Given all of its lines are in all caps and have a minimum of two exclamation points.
  • Our Zombies Are Different: Technically, the Goliath isn't even alive: it's essentially an dead, diseased, rotting bee that only operates due to being composed of mostly machinery.
  • Palette Swap: Of the standard Plaguebringers.
  • Person of Mass Destruction: It is described as being able to easily raze an entire city to the ground through its artillery. And due to the deadly plague it spreads, anything that isn't blown up will be turned into an apocalyptic wasteland.
  • Plague Master: Hey, it's in the name.
  • Poisonous Person: By extension of the above trope.
  • Red Eyes, Take Warning
  • Sickly Green Glow: A recurring theme with the Plaguebringers, but the Goliath takes this further by making the screen green-ish when active.
  • Weaksauce Weakness: Despite being a biomechanical zombie, the Plaguebringer Goliath is still classified as a bee enemy, and as such can have its contact damage halved through the use of the Honey Dew accessory or its upgrades.

    The Ravager
An ancient automaton roams the land...
A mysterious automaton intended to be fought on the Surface after Golem and before Duke Fishron. Gains an immense stat buff (and unique loot drops) after Providence is killed.

Drops various bars and cores which would have required a lot more effort to craft, along with several unique weapons and accessories. After Providence is killed, it begins dropping Bloodstone as well. Notably drops the Infernal Blood in Revengeance, which permanently boosts your Rage Mode damage.
  • Art Evolution: Heavily resembles a walking fortress with flaming towers now, and overall looks far more polished and coherent.
  • Beam Spam: Its body rapidly fires off rings of lasers in its second phase, and its head launches homing ones.
  • Bizarre Alien Biology: Its head can fly off and attack you once sufficiently damaged. There is also the natural blue flames on its tower-like "shoulders," as well as one of the skulls seemingly growing from beneath the other.
  • Body of Bodies: Currently unreleased lore makes the Ravager out to be a living mass of corpses.
  • Boss Arena Urgency: It destroys any nearby platforms whenever it jumps high in the air and slams back down.
  • Cognizant Limbs: Much like Golem, Ravager's arms can fire at you independently.
  • Contractual Boss Immunity: Its ability to smash platforms make most run-of-the-mill arenas next to useless.
  • Detachment Combat: When its head loses all its HP, it starts flying around, trying to ram players and fire rockets.
  • Dishing Out Dirt: Whenever it stomps, it can cause giant damaging pillars of rock to appear. These will quickly launch out of the ground and attempt to land on players.
  • Eldritch Abomination: A massive, grotesque monster that looks like an amalgamated fusion of flesh, bones, and rock, with 2 skulls and purple flames erupting from its "shoulders."
  • Expy: Its general 'headless' design, otherwordly design and traits, and the placement of the skills could bring Sachiel to mind.
  • Flesh Golem: The best way to describe it. Aside from having a similar AI as the Golem from the original game, its resprite heavily implies that this is now the case, being mostly composed of rotten flesh holding castle parts together.
  • Giant Space Flea from Nowhere: There is currently absolutelyno indication of what the hell the Ravager is or even where it came from besides the fact that it's an ancient automaton. Its appearance is out of place with anything else that's in the game and its methods of attack are strange and vary widely (it launches fire, lasers and homing rockets, to name a few). Even its drops (various craftable metals and cores) don't do anything to explain its origins. Even Polterghast, the other space flea, you can at least come to the conclusion that it's related to the Phantom Spirits. The Ravager has nothing.
  • Glowing Eyes of Doom: One red and one blue, in fact.
  • Gravity Screw: Upon having its limbs taken care of, the Ravager will permanently inflict all players with Weak Petrification, which severely limits the players' mobility by cutting flight time by 90%, disabling mounts, disabling any additional jumps, and removing all jump height boosts.
  • Homing Projectile: It can launch giant missiles that home in on players before exploding for enormous amounts of damage. Its head also launches smaller, red flares that have a weak tracking property.
  • Leitmotif: "Open Frenzy".
  • Losing Your Head: As seems to be growing common nowadays, the Ravager's head will detach and fly after you when destroyed.
  • Mighty Glacier: Ravager isn't very mobile compared to many of the other bosses (not helped by a lack of flight/teleportation abilities), but it has very high HP at the point you're supposed to fight it and deals incredibly high damage with a wide range of attacks. Not to mention that instead of running to you, it can force you to itself using its petrification and flight-nerfing powers.
  • Mismatched Eyes: Played with. It has two faces, one that has a single red eye and one that has a single blue eye. Played straight with its minimap icon, which is a skull with both a red and a blue eye.
  • Names to Run Away from Really Fast
  • Playing with Fire: Periodically summons pillars of blue flame around the player, which deal high contact damage and lob bouncing fireballs. In addition, its body can launch bouncing fireballs like Golem.
  • Red Eyes, Take Warning: Well, one of them anyway.
  • Rocket Punch: Like Golem, its fists can extend to punch you.
  • Shielded Core Boss: Ravager's main body is invulnerable until all of its body parts are destroyed.
  • Taken for Granite: Implied with the Weak Petrification debuff it hammers you with in its second phase.
    • It can literally petrify you if you run too far away from it.
  • The Power of Blood: Played with. While it doesn't use this itself, all of its items that aren't Cores or Bars (the Hematemesis, Bloodflare Core, Blood Pact, and Flesh Totem) seem to use blood as a central theme. The item obtainable from fusing all of Ravager's accessories together is even called the Core of the Blood God.
  • Took a Level in Badass: Ravager gains a truly enormous stat boost after Providence is killed, multiplying its health by almost 15 times. However, it also drops loot that it didn't before.
    • On a more meta level, the Ravager used to be just a stronger Golem clone with a few more attacks (that were developed from Golem itself). Now, it is far more powerful, possessing higher damage output, a more diverse and unique moveset, and the ability to uniquely inflict a debuff that nearly completely neuters your flight power.
  • Turns Red: If the player gets underneath it, it will receive a large speed boost and start firing projectiles more aggressively.
  • You Will Not Evade Me: If the player strays too far away from the Ravager, they will be frequently turned into stone, impeding them from moving further away.

Post-Moon Lord Bosses

    The Profaned Guardians
The Profaned Flame blazes fiercely!note 

The eternal servants of the Profaned God, formed from the souls of the worshippers that devoted their lives to protecting their God. They are meant to be the first boss you fight after Moon Lord, and can only be fought in the Daytime Hallow/Underworld.

They don't drop anything except a Profaned Core, which is used to summon Providence herself.
  • Art Evolution: They have become far more polished and organic-looking, with each guardian receiving its own unique sprite.
  • Ascended to a Higher Plane of Existence: Having been devoted to Providence for so long, they ascend to become her eternal guardians.
  • Degraded Boss: They are summoned by Providence herself as minions during her boss fight.
  • Heavily Armored Mook: The Defense Guardian has armored plates all over its body and specializes in blocking hits for the Healer Guardian.
  • Homing Projectile: The Healer Guardian can fire bursts of orange beams that home in on the player, dealing a surprisingly high amount of damage. These beams, however, will dissipate after travelling far enough.
  • Javelin Thrower: More like javelin shooter - the Offense and Defense Guardians use radial bursts of accelerating fire spears to attack. The former notably fires a lot more of them in a single sitting.
  • Leitmotif: "Unholy Ambush".
  • Lightning Bruiser: The Offense Guardian, having the most health, highest durability, and highest damage output, not to mention the widest variety of attacks.
  • Mini-Boss: Usually seen as this, since they're not particularly strong and only drop the item used to summon their master.
  • Oxymoronic Being: They seem to be made partially of wood, despite the rest of their bodies being flaming rock and them using fire as their main power.
  • Playing with Fire: They all attack using fire.
  • Power Crystal: The Healer Guardian has numerous purple crystals on its body.
  • Resurrective Immortality: If killed, they will just reform from Providence later.
  • Shielded Core Boss: The main and most powerful Guardian is invulnerable until the other two are killed.
  • Spikes of Doom: The Offense Guardian has a prominent molten spike on its front.
  • Stone Wall: The Defense Guardian, having the most durability of the two lesser guardians but the least attack power.
  • Support Party Member: The Healer Guardian, who has the worst stats and sits in the backlines while firing homing flares.
  • Turns Red: The main Guardian gains access to more and more attacks as it loses HP, going from simply firing spears to launching massive fireballs and leaving flame trails wherever it goes.
  • Wolfpack Boss: There are 3 Profaned Guardians that must be killed. The main, offense-oriented one charges at players while spraying flaming spears, the second defense-oriented one who circles the main one while firing spears, and the third support-oriented one that heals the others fires homing blasts from a distance.
  • The Worf Effect: In their backstory, they fought Yharim to stop his influence and actually managed to push him to the brink of defeat. However, he promptly summoned the Devourer of Gods, who delivered a Curb-Stomp Battle to the Guardians.

    Providence, the Profaned God
The air is burning...

An ancient deity that is the original source of all ancient religions. Created in a clash between angels and demons, Providence is both light and dark, and doesn't take sides. The Devourer of Gods and his Sentinels were sent by Yharim to destroy her, but she concealed herself so well that it is still looking for her to this day. She is meant to be fought right after the Profaned Guardians, and like them can only be fought in the Daytime Hallow/Underworld, with her drops differing depending on where you killed her.

Providence drops many weapons which revolve around holy fire, Divine Geodes used to make Tarragon Armor among other things, and also drops the Rune of Kos, used to summon the Sentinels of the Devourer. Her death also causes Uelibloom Ore to generate in the world. In Expert and above, she drops a unique accessory depending on where she's killed (the Elysian Aegis for the Underworld, and the Elysian Wings for the Hallow). Killing her also buffs up Dungeon and Profaned Crag enemies (along with Calamitas, Ravager and Brimstone Elemental), while allowing them to drop Phantoplasm and Bloodstone respectively.
  • Anti-Frustration Features: A Profaned Core (her summoning item) can combined with some of the Divine Geodes she drops to create a special Profaned Core which has infinite uses.
  • Art Evolution: Formerly, Providence was a massive moth with red wings. Then, she was a large statue-like mass with flaming wings. Her current sprite takes this even further by giving her a more cohesive design with an actual head, pale purple crystals lining her "shoulders," and flame wings that now resembles a Daimonji.
  • Big Creepy-Crawlies: Her old design was this, instead of the mass of rock and flame she is currently. She still had some traits in some former sprites, primarily her "head" having mandible-like protrusions. Not nowadays, though, as there's no insect traits to be seen.
  • Empathic Environment: Causes the area to turn orange.
  • Exploited Immunity: Due to her natural affinities, Providence is inherently capable of surviving the overwhelming pressure and heat that comes with living inside the sun. The Devourer of Gods, for all its dimension-tunneling abilities and cosmic steel armor, cannot.
  • Expy: Her old sprite highly resembled a Volcarona.
  • Female Monster Surprise: You wouldn't know that she's in fact a goddess by looking at her.
  • Flechette Storm: One of her attacks summons a swarm of flaming spears to pincushion you with. She'll both fire these spears directly and summon them around the player.
  • Flunky Boss: Although plenty powerful by herself, she summons groups of Profaned Guardians at certain HP intervals.
  • Gravity Screw: She inflicts the debuff Icarus' Folly, which greatly reduces flight time.
  • Hold the Line: Occasionally Providence will retreat into her shell and become highly resistant to damage, while spraying either a maelstrom of flames or a barrage of flaming spears. In both cases, dodging is your best option - although, unlike Brimstone Elemental it's still possible to do reasonable damage to her during this state.
  • Hot Wings: Her wings are entirely made of fire.
  • Leitmotif: "Unholy Insurgency".
  • Lightning Bruiser: She's surprisingly fast for her bulk and deals huge amounts of damage through her projectile spam.
  • Loophole Abuse: She has a very particular attack that doesn't inflict damage conventionally, but instead "heals" the player by a negative amount. As a result, this attack gets to alter your health directly, completely bypassing your defense, your damage reduction, and your invincibility frames in the process.
  • Oxymoronic Being: A god of both light and darkness. Being born of the sun's light and the underworld's darkness, she is technically good and evil at the same time.
    • Even her name contradicts itself: since "profaned" means desecrated or defiled, she is essentially an unholy god.
    • Her new sprite takes it even further, since she has wooden parts despite being on fire.
  • Physical God: Specifically, a fire/sun god that is a perfect balance of light and darkness. Her powers even allow her to hide in areas where not even the Devourer's interdimensional tunneling can reach.
  • Playing with Fire / The Power of the Sun: Her main method of attack is obliterating her target with showers of holy fire blasts. She shoots volumes of fireballs, exploding flares, fireballs that explode into more fireballs, lingering fire blasts, flaming spears, fireballs that launch more get the point.
    • This is also the one of the main reasons the Devourer can't find her: she hides herself in places too hot for even it to access.
  • Power Crystal: Her shoulders feature prominent purple crystals, and she has a purple gem serving as what appears to be her core.
  • Power Gives You Wings: Whenever she's in her active state, she has 6 distinctive seraph-style wings made of pure flame.
  • Rock Monster: She's more or less a magically-charged core surrounded by fire and a rocky shell.
  • Shielded Core Boss: Providence will be immune to damage as long as at least one Profaned Guardian still stands.
  • Shoot the Dog: She's effectively a bystander in your rampage against Yharim and his forces, but she has to be killed to lure the Sentinels Of The Devourer as well as the Devourer of Gods itself out of hiding.
  • Tactical Suicide Boss: In one of her phases, she summons a number of deadly fireballs. Along with them, she summons green orbs that heal players that collect them. Averted in Deathmode, where she only uses orange flames.
  • True Neutral: Being composed of both light and darkness, Providence is a neutral god. She only destroys those who tamper with her artifacts, and only protects those who rever her. She only attacks the player because they found a piece of her inner core.
  • Turns Red: If you get too far from her, she'll inflict the Holy Inferno debuff until you come back. Said debuff drains your HP at a massive rate to ensure quick death should you refuse to get closer to her.

    The Polterghast
Shrieks are echoing from the dungeon...

A mysterious being that appears in the dungeons after you kill 30 Phantom Spirits, speculated to be an amalgamation of numerous vengeful spirits. Do not take it lightly. Meant to be fought after the Sentinels of the Devourer but before the Devourer itself.

Drops numerous spectral weapons as well as the Ectoheart in Revengeance which permanently shortens your Adrenaline charging time, and killing it also allows certain Abyss foes to start dropping items. Also drops Ruinous Souls, which are used to create Bloodflare Armor.
  • Anti-Frustration Features: You can use Phantoplasm to craft a Necroplasmic Beacon to manually summon him instead of farming more Phantom Spirits. In fact, the Necroplasmic Beacon is the only way to summon him after he's killed once.
  • Big Creepy-Crawlies: Vaguely resembles a stag beetle.
  • Bonus Boss: Word of God considers it one. It's not required to kill Polterghast in order to unlock other bosses or progress the game, but the items you get from him and his Ruinous Souls can give you a huge edge over the next couple of bosses. You also need the Bloodflare Armor if you want to make the Auric Tesla Armor in the endgame.
  • Beam Spam: Its primary means of attack. They alternately bounce off surfaces or home and pierce walls.
  • Combat Tentacles: In a similar vein to Plantera, it uses damaging hooks to move itself around. Turns out it actually doesn't need them - once it loses enough health, it will detach its hooks and turn them into invincible turrets while it begins flying.
  • Doppelgänger Spin: As the Necroplasm, it can spawn a clone of itself that attacks just like it. While the clone has far less health and lacks Polterghast's signature obscene damage reduction, it will be respawned shortly after being killed.
  • Expy: The Polterghast, in particular its last form the Necroplasm resembles the Metroid Prime.
  • Flunky Boss: Summons Phantom Turrets that chase players, and when at low health it will begin creating Phantom Spirits.
  • Fusion Dance: Allegedly a fusion of numerous spirits into one creature.
  • Giant Space Flea from Nowhere: Like the Ravager, there is no explanation to where this thing came from or what it is. The only thing that's known about it is that it's some kind of spirit.
  • He Was Right There All Along: How do you summon Polterghast before killing it once? You don't, because Polterghast summons itself after the player kills enough Phantom Spirits in the dungeon.
  • Implacable Man: Taken to an absolute head. It starts off taking normal damage, but as it loses health its damage resistance will slowly go up. Once it's nearing the end of its life, Polterghast will only be taking a fraction of the damage you dealt to it originallynote  - sometimes making the last quarter of its health bar tougher to whittle down than the three quarters you already took down.
  • Invincible Minor Minion: The Phantoms it spawns as the Necroplasm (one stage earlier as Necroghast in Death Mode). They are invincible and will rotate around the player, deploying spectral mines which slowly accelerate towards their target.
    • Once it becomes the Necroghast, its hooks detach and become stationary turrets.
  • King Mook: Seems to be one to the various spirits roaming the dungeon.
  • Leitmotif: "Feral Amalgamation".
  • Merger of Souls: It is speculated to be an entire legion of souls that fused into a single, monstrous being.
  • Our Ghosts Are Different: For one thing, it's a giant spectral insect-like thing with a rocky shell that fires lasers.
  • Pinball Projectile: Its shots bounce off walls.
  • Punny Name: Its name is derived from a combination of "poltergeist" and "ghast", both of them referencing a type of spirit.
  • Sequential Boss Fight: The Polterghast has 3 phases, one as the Polterghast, one where it transforms into the Necroghast, and a final one when it transforms into the Necroplasm.
  • Shed Armor, Gain Speed: With every phase, more of its stone shell falls off and the faster it gets. Unfortunately, its Defense doesn't go down at all: in fact, it has damage reduction that actually goes up as it loses health.
  • Shmuck Bait: Thinking of farming some Phantom Spirits right after Providence? Well, make sure not to kill that many, lest you want this spectral nightmare to show up and quickly murder you.
  • Turns Red: It makes up for its rather lacking HP for passive damage resistance that only increases as its HP goes down. When in its second phase, its shots literally turn red and become more damaging. Of course, as it moves through its phases it will become more and more deadly.
    • If you leave the dungeon, Polterghast goes absolutely berserk until you go back in.

    The Sentinels of the Devourer 
A group of three wildly different entities that act as the Devourer of Gods's personal squad of second-in-commands. Displaying utmost loyalty to their master, they are bound under a magical pact which has them offer their services for a fragment of the Devourer's own strength. Before the player's arrival, they were searching for Providence in order to expose her to their master. The Rune of Kos, which can only be obtained by defeating Providence, allows the player to use a fragment Providence's power to lure them out of hiding instead. They are all supposed to be battled before the Polterghast and after Providence, and each of them drops a material used to craft the Cosmic Worm, which allows you to summon their master.

Each Sentinel must be summoned by the Rune in a different location. Signus must be spawned in the underworld, the Storm Weaver must be spawned in space, and the Ceaseless Void must be spawned in the Dungeon. None of the bosses will enrage, but it's difficult to escape the area the Ceaseless Void and Signus spawn in without them despawning.
  • Arch-Enemy: Providence. Their mission is to track her down and bait her out of hiding so the Devourer can kill her.
  • The Bus Came Back: Once the Devourer of Gods is defeated, all three spawn in order with a third of their health. They must be defeated before take on the mechworm's final form.
  • Degraded Boss: All three of them are summoned by the Devourer of Gods once his first form is defeated (in order: Ceaseless Void, Storm Weaver, and Signus). Fortunately, they only have 1/3 of their HP. Unfortunately, once you take them down, you'll have to deal with the Devourer's second form as well.
  • Dragon-in-Chief: They all look for Providence while Devourer of Gods minds his own business.
  • Eldritch Abomination: A trio of them taking on the forms of a Humanoid Abomination followed by a normal Eldritch Abomination and finally an Animalistic Abomination.
  • Fire/Ice/Lightning: Signus dwells within the depths of hell and can cast Cosmic Fireballs, Ceaseless Void has the occasional Freeze Ray attack, and Storm Weaver can cast orbs that shoot electricity.
  • Leitmotif: "Servants of the Scourge", which is shared by all three of them. Uniquely, it’s divided into three individual variations for each Sentinel: the first for Storm Weaver, the second for Ceaseless Void, and finally, Signus, Envoy of the Devourer.
  • Magically Binding Contract: Each Sentinel is bound to the Devourer of Gods by a magical contract. In exchange for their unconditional allegiance and service to their master, they are blessed with a fragment of the cosmic serpent's godlike power. The Devourer wields their strength, and they in turn are infused with its might.
  • Mini-Boss: Often regarded as these rather than full bosses, but are far tougher than the average Mini-Boss.
  • Purple Is Powerful: All three have purple as a predominant color, and they're each very deadly.
  • Land, Sea, Sky: Sort of. Signus is in the lava filled underworld, Ceaseless Void is in the dungeon complex beneath the surface, and the Storm Weaver is miles above the clouds, found in space.
  • Undying Loyalty: They answer only to the Devourer of Gods.

Signus, Envoy of the Devourer
Click here to see his second form 
Click here to see his third form 

An enigmatic being of unparalleled power, Signus is a deadly assassin capable of swiftly killing anyone he's contracted to target. When he made an attempt on Yharim's life, he suffered his first defeat at the hands of the Devourer whom Yharim summoned to aid him. Trapped in the eldritch worm's dimension, he and the Devourer reached a stalemate and Signus eventually gained a grudging respect for him, becoming his deadliest and most trusted Sentinel. Must be spawned in the Underworld.

Drops several weapons themed after him and Twisting Nether, which is used in several weapon recipes but mainly used to complete the Cosmic Worm.
  • The Ace: Highly efficient in his assassin occupation, capable of killing heroes like Statis, as well as the Devourer of God’s most trusted Sentinel.
  • Action Bomb: Can summon Cosmic Mines that fly at players and explode.
  • All-Encompassing Mantle: Wears a purple cloak that obscures everything on him, minus his glowing eyes, a set of spikes on his back and his rather misshapen lower half.
  • Art Evolution: The cloak becomes a bit more detailed as he gains two more eyes, all in pink, and his tail becomes more smog-like.
  • Badass Long Robe: An all encompassing one in purple.
  • Belly Mouth: During one of his phases, his face becomes a mass of black tendrils while he grows a toothy purple maw on his torso.
  • Bizarre Alien Biology: His eyes are glowing purple teeth.
  • Bullfight Boss: During one of its phases, Signus will rapidly lunge at the player several times in succession.
  • By the Lights of Their Eyes: The only thing on his face that’s usually always visible. Except they’re teeth.
  • Cthulhumanoid: His second phase resembles one, where his face is entirely replaced with tentacles.
  • The Dragon: Of all the Sentinels, he is this to the Devourer of Gods, partially due to his power and partially due to the fact that he's the only Sentinel with actual intellect (since Storm Weaver is more animalistic and Ceaseless Void is outright mindless).
  • Death from Above: One of his attacks has him fly above the player and rapidly fire cosmic flames down at them. At half health, he will begin raining cosmic fire from the sky regardless of phase.
  • Evil Sorcerer: One theory suggests he is a mage of insane levels of power.
  • Expy: A hooded being of high levels of magical power as well as some Facial Horror, serving as The Dragon to an Eldritch Abomination related to invertebrates can bring The Hooded One to mind.
  • Flunky Boss: Summons Cosmic Lanterns to provide melee combat assistance and block off the player's escape path while he's charging. Notably, the lanterns have practically no HP but hit almost as hard as Signus himself.
  • Glowing Eyes of Doom: Six pink and narrowed ones.
  • Hero Killer: The actual one who murdered Statis.
  • Humanoid Abomination: The only member of Yharim's command aside from Draedon that is even remotely humanoid. Although it's painfully obvious that he is anything but human.
  • In the Hood: Has a hood that completely hides his face, save for his eyes.
  • Lightning Bruiser: Travels very fast, teleports a lot, and hits like a truck. Taken Up to Eleven in his charging phase, where he can dash across the screen in less than a second.
  • My Greatest Failure: He has only ever failed an assassination once, and that was against Yharim. Said failure eventually resulted in his mutual defeat at the hands of the Devourer.
  • Our Ghosts Are Different: A theory is that he is a wraith of sorts.
  • Playing with Fire: Can summon cosmic flames to blind and burn anyone he fights, which he uses to great effect during his fight by launching rapid barrages of fire. The creation of these ethereal flares is also the only thing all of Signus' attacks have in common, due to his shapeshifting nature making all other clues inconsistent.
  • Predecessor Villain: In a sense. He made his mark on Statis’s clan before allying with the Devourer of Gods, with the clan deriving their arts from him.
  • Professional Killer: Can be contracted to kill just about anyone, regardless of the conditions or his target's defenses. He has only ever failed one mission.
  • Purple Eyes: Six of them. Well, pink, but it’s close enough.
  • Red Eyes, Take Warning: His old sprite had four of them.
  • Shapeshifting: Capable of doing this by virtue of the fact that he lacks a true form. It has even been seen consuming bodies and taking their appearances after. In battle, he can takes on three wildly different forms as he switches phases.
  • Spikes of Villainy: Has 3 spikes on his back. And they move.
  • The Spook: No one knows who the hell Signus really is, be it a wraith, a mage or an interdimensional being, nor what his backstory is like.
  • Teleport Spam: As part of his stealth motif, he will teleport constantly during one of his phases.
  • Turns Red: While his phases are time-based and follow a set pattern, they will become enhanced as he loses HP. As he nears death, he will teleport and move faster, shoot flames faster, and leave behind exploding dust as he charges.
    • Also, at half health he will begin summoning cosmic flames from above in all of his phases.
  • Villain Respect: It eventually became a servant of the Devourer after developing a grudging respect for the worm, which was the only one who ever defeated him.

Ceaseless Void
An Eldritch Abomination of horrific power created when the Devourer was still practicing dimensional tunneling, the Ceaseless Void is a sentient tear in reality barely stabilized by a cosmic steel shell and impossibly powerful magic. While research was done on it, it was eventually deemed too powerful to control and left in the Dungeon, but not before the Devourer took ownership of it via magical contract. Must be spawned in the Dungeon.

Drops some equipment based off of it and also drops Dark Plasma, which is used for several weapons as well as the Cosmic Worm.
  • Achilles' Heel: The Dark Energy swarms are sensitive to knockback, allowing the player to survive even in the tightest of choke points in the Dungeon with decent weaponry. Another weakness of the Ceaseless Void is weapons with high usetime as they will shorten the transition between phases and may help keep the Dark Energy at bay.
  • Apocalypse How: The second possibility if its casing is shattered: The void fills up and takes out the entire universe, making this a X-4 level. Otherwise, it will collapse in on itself and die.
  • Art Evolution: Has been redesigned to look more jagged, like a maw filled with teeth held together by crystals.
  • Beam Spam: Its only attack besides contact damage is to fire a large orb that fires homing lasers at the player while they're swatting away the Dark Energy swarms. Both the orb and the lasers hurt a lot.
  • Cat-and-Mouse Boss: Ceaseless Void will rain hell on you while it's invulnerable, but doesn't have much to protect itself with when it's rendered vulnerable.
  • Cessation of Existence: If its shell is broken, it could possibly end all of existence, trapping everything in a void between realities.
  • Eldritch Abomination: A semi-sentient living tear in reality that resulted from a flawed teleportation attempt by the Devourer, held in place by a Cosmilite structure which resembles a generic arcanum. It consumes matter and life indiscriminately and turns anything it consumes into shapeless masses of Dark Energy which drain the life force of anything they touch.
  • Flunky Boss: Relies on the melee combat of its Dark Energy minions to attack, but will not hesitate to try and freeze you with its own attacks.
  • Glass Cannon: While its laser attacks hit quite hard and its Dark Energy swarms can rack up a ton of damage, even with 999,999 defense 150 HP is still quite pathetic at the time when the player should face itnote . It circumvents this by turning invincible whenever a new horde of Dark Energy is summoned.
  • Homing Projectile: Both its laser orb and the lasers said orb fires will track players.
  • Omnicidal Maniac: Despite lacking a proper mind, the Ceaseless Void is solely driven on by an all-encompassing desire to consume life.
  • Person of Mass Destruction: Anything that would go near its regurgitated globs of shadow would die instantly. If its armor were ever to be compromised, it could possibly expand and engulf all of existence.
  • Psycho for Hire: The Ceaseless Void is only a Sentinel of the Devourer by the loosest definition: although it is bound to his will, it has no mind of its own and its only drive is to consume the life force of all living things.
  • Shielded Core Boss: Only turns vulnerable if all its Dark Energy is destroyed.
  • The Worf Effect: It took the combined powers of Calamitas and the Devourer of Gods to seal it away.
  • Void Between the Worlds: It is a living version of this. It was created on accident by virtue of the fact the Devourer of Gods didn’t instantly master its dimension jumping.

Storm Weaver
Click here to see its unarmored state 
The last of the Devourer's species after the worm himself caused humanity to drive it to near-extinction. The Devourer found it as a newborn and, taking pity on it, nursed it back to health and brought it to Yharim, who equipped it with cosmic steel plating just like the Devourer himself. It now remains in space, devouring Wyverns for sustenance, and while it is still rather mentally underdeveloped due to a lack of intelligent creatures to absorb, it is still a force to be reckoned with. Must be spawned in space.

Drops two ranged weapons based off of it, and also drops Armored Shells which are used for a few weapons and the Cosmic Worm.
  • Animalistic Abomination: The most animal-like in the form of a worm, and also more or less Devourer of Gods Jr.
  • Always a Bigger Fish: The creature feasts upon Wyverns that are in the air with it.
  • Anti-Air: Only physically attacks if the player is in the air. In Death Mode, its second form will chase you anywhere.
  • Attack Its Weak Point: Its tail in the first phase. Attacking anywhere else will result in Scratch Damage.
  • Contractual Boss Immunity: Piercing weapons are the age-old counter to any worm, and many late-game weapons can even do damage for every single tick they touch an enemy. The Storm Weaver's first form, on the other hand, not only takes Scratch Damage from any attacks that don't hit its tail, it also despawns all projectiles after they damage it regardless of which segment it touched. This renders a great number of otherwise powerful weapons next to useless against it.
    • In addition, his second form massively resists piercing projectiles like most of Calamity's worm bosses.
  • Empowered Badass Normal: At first just a newborn of the species Devourer of Gods hails from, it was given the same kind of armored plating and weaponry as the Devourer, making it a formidable opponent despite its mental immaturity.
  • Flunky Boss: Releases Statis Probes to gun the player down as it hangs in the sky.
  • High-Altitude Battle: It's in space.
  • Laser Guided Tyke Bomb: More or less this for the humans who hunted his species to extinction.
  • Last of His Kind: One of two with the Devourer of Gods.
  • No-Sell: Not only does its first form take 1 damage from any attacks that don't hit its tail, piercing weapons have no effect on it.
  • Lightning Bruiser: While it appears to be only moderately fast, going airborne to aggro it will make it accelerate at incredible speed. Fitting the "bruiser" part, it hits like a freight train and can take quite a bit of damage in both forms (for different reasons).
  • Pint-Sized Powerhouse: In Death Mode, its second form shrinks down to a fraction of its original length. Despite what that might imply, it has more health, hits far harder, and not only is it harder to hit now, its smaller body also causes piercing weapons to not inflict as much damage as they would have before.
  • Segmented Serpent: However, its piercing immunity makes normal tactics for worm enemies useless.
  • Shed Armor, Gain Speed: After you beat its first phase, its armor shatters and it becomes much faster and more deadly, albeit losing all its defense. Strangely enough, it has more HP in its unarmored state.
  • Shock and Awe: Can spawn orbs which fire lightning bolts.
  • The Last of These Is Not Like the Others: Currently the only one of the Sentinels without a confirmed resprite.
  • Turns Red: "Defeating" it once causes it to lose its shell, respawn, and become far more aggressive.
  • Unskilled, but Strong: A lack of intelligent prey to assimilate means that the Storm Weaver still has the mentality of a feral animal. However, considering that it's the same species as the Devourer of Gods and that it's equipped with a similar set of Cosmilite armor, its low intellect isn't really holding it back a lot.

    The Devourer of Gods
Click here to see his final form 

Once an ordinary giant worm with the ability to absorb the powers of those it consumes, countless years of assimilating prey turned the Devourer of Gods into a massive, reality-warping menace who lives in an alternate plane, only leaving to eat and assimilate beings of sufficient power. It drew the attention of Yharim after devouring a platoon of his finest. Instead of killing it, Yharim struck a deal with it, which was a supply of powerful entities to consume in exchange for his eternal servitude. The Devourer accepted and, after being equipped with incredibly durable cosmic steel armor, now serves as one of his most powerful mercenaries. To be fought after the Polterghast but before the Bumblebirb.

The Devourer drops a number of weapons based off of him, but his most important drops are Cosmilite Bars, which are used in most endgame recipes such as the God Slayer Armor. Killing him also buffs up the Frost/Pumpkin Moons while making them drop Endothermic Energy and Nightmare Fuel respectively, which are each used in many endgame recipes.
  • A God Am I: Firmly believes himself to be one. Given his immense strength and the fact that he eats said gods and assimilates their power, his claims may be perfectly justified..
  • All Your Powers Combined: To a degree. While obviously similar to Storm Weaver, the Devourer of Gods also uses Ceaseless Void's primary attack and changes its behaviour and method of attack on a timer like Signus. In lore, it's also said to gain the abilities of anyone it consumes.
  • Anti-Air: During its airborne "blue" phase, it will only physically attack players that are in the air.
  • Arch-Enemy: To Providence, her being his one target that got away from him. To the present day, he's still hell-bent on killing her and assimilating her powers, having dispatched all his Sentinels to find her.
  • Art Evolution: It gradually got more and more detailed through its many balances, culminating in the eldritch monstrosity that is his final form. And even then, it’s still getting a few resprites.
  • The Assimilator: It absorbs the powers of anything it consumes.
  • Attack Its Weak Point: While it doesn't No-Sell attacks to its body like Storm Weaver, its tail and head should be aimed for as much as possible due to the body taking massively reduced damage.
  • Beam Spam: Follows the proud tradition of worm bosses spraying projectiles all over the place. Aside from the obligatory Frickin' Laser Beams, it also fires nebula spheres, gravity orbs, laser walls, homing spheres that shoot more homing lasers, streams of fire... the list goes on.
  • Boss Banter: The creature's surprisingly talkative during its fight.
  • Bragging Rights Reward: The Cosmic Plushie, which is obtained by opening The Devourer of Gods' Treasure Bag with a Hardcore character while Deathmode is active. It's a pet-summoning item that summons a miniature anthropomorphic Devourer of Gods known as the Chibii Devourer. As expected, it acts like a normal pet item... except not. If you and Chibii are in very dark areas, Chibii Devourer may meow, scream, or stab the player for 500 damage.
  • Bullfight Boss: Well, half the time. It spends fifteen seconds flying and another fifteen seconds chasing players on the ground... though this is never an excuse to underestimate its insane killing power.
  • Cannibalism Superpower: As said before, he gains the powers of anything he eats.
  • Contractual Boss Immunity: The Devourer's body segments are massively resistant to damage, making a number of piercing (and therefore worm-killing) weapons far less effective than they would have normally been.
    • In addition, he uniquely disables mounts and teleporters while active.
  • The Dragon: With Calamitas gone, he serves as Yharim's right-hand man and go-to monster when he wants something killed. Even after Calamitas comes back, he still holds a position as the Jungle Tyrant's most deadly mercenary.
  • The Dreaded: The mere fact that it existed drove humanity to promptly hunt its species to extinction before they could get as powerful.
  • Deadpan Snarker: It sounds positively exasperated if you get hit by its tail, criticising your dodging skills.
    "Are you honestly that bad at dodging?"
    "Of all my segments to get hit by..."
  • Eaten Alive: Ninety percent of all player deaths against this boss will be to its freakishly powerful jaws. Notably, this was also apparently Yharim's preferred method of executing traitors.
  • Eldritch Abomination: A giant predatory worm of immense power that possesses reality warping capabilities and resides in its own dimensional plane. Simply being near it warps gravity and it can seemingly phase out of reality at will.
  • Empathic Environment: The screen darkens in its presence.
  • Evil Is Hammy: Boy, is he ever. Just take a look at his quotes.
  • Flunky Boss: It can summon smaller versions of itself at certain health intervals in Revengeance mode. In addition, he will call his Sentinels to assist him when first killed.
  • From Nobody to Nightmare: It started life as a ravenous but otherwise normal worm, albeit capable of assimilating the power of those it killed. Eventually it grew so strong that it developed the ability to tear holes into alternate realities and set up home there, where it turned into the cosmic monstrosity it is now. Believe it or not, it got even worse when it agreed to serve Yharim and the Jungle Tyrant decided to give him superpowered, nigh-impenetrable cosmic steel armor.
  • Gravity Screw: Simply being near it inflicts either Extreme Gravity or Warped, which cripple flight time and distorts falling speed respectively.
  • Hero Killer: In older lore, it was used by Yharim to kill Braelor and Statis after they betrayed him. On a meta level, the Devourer is notoriously competent at ripping unfamiliar players to shreds time and time again.
  • Hold the Line: When at about half HP in its second form, it will be able to turn invisible and invulnerable for about 20 seconds while firing laser walls to harass you from all sides.
  • Kill the God: It's in the name. It loves devouring gods and absorbing their powers.
  • King Mook: To every worm in the game and even the other worm bosses to some extent. Most prominently, the Armored Diggers seen roaming underground look almost exactly like miniature Devourers of Gods.
  • Last of His Kind: He was until he discovered the Storm Weaver. Although it was technically his fault, as he gained such a terrifying reputation that humanity hunted his species to extinction.
  • Leitmotif: "Scourge of the Universe".
  • Lightning Bruiser: Moves scarily fast, dishes out One-Hit Kill attacks like nothing, is exceptionally durable - and that's just its first form...
  • Names to Run Away from Really Fast: The Devourer of Gods.
    • Even the name of its theme, Scourge of the Universe, qualifies in its own right.
  • No Fair Cheating: Trying to butcher it won't do anything but earn an angry response. Trying to outrun it with accessories like the Warp Core or Soul of Dimensions cause it to speed up with you - potentially reaching speeds so high that he catapults himself off the world map entirely. Because of this, the Warp Core was coded to not work during the fight in a joint effort from Thorium and Calamity's dev teams.
  • No-Sell: Unlike any other enemy, attempting to instakill it with Cheat Sheet's butcher function does absolutely nothing. In fact, the Devourer will actually mock you if you try to do so.
    You can butcher...ME?
  • Omnicidal Maniac: It used to tunnel through the world, slaughtering anything and everything it could find.
  • One-Hit Kill: In Deathmode, getting hit by its head segment is a guaranteed kill regardless of your HP.
  • One-Winged Angel: After you seemingly kill him, he returns in a larger and more monstrous final form.
  • Pet the Dog: The Devourer's sparing of the Storm Weaver can seem like this. Subverted with the fact that it would not hesitate to destroy the Storm Weaver should it ever turn against him.
  • Playing with Fire: It has the ability to occasionally breathe a stream of purple flames which deals a ton of damage and hammers you with a lengthy dose of God Slayer Inferno. In addition, touching him will inflict the God Slayer Inferno as well.
  • Psycho for Hire: It doesn't serve Yharim out of respect so much as the opportunity to chew on some more gods. It is unknown whether the Devourer could actually overthrow the Jungle Tyrant if he really wanted.
  • Purple Is Powerful: Primarily associated with the color purple, and one of the most powerful entities in canon.
  • Reality Warper: It wasn't this until it consumed enough prey. Now, however, its very presence causes gravity to go haywire and it can rip holes through dimensions at will.
  • Resurrective Immortality: It's been stated by Word of God that it's impossible to truly kill him, only to temporarily defeat him. No matter how many times you defeat him, he'll just come back again later.
  • Segmented Serpent: The thing is even larger than Destroyer, and immensely more dangerous. You can't even take advantage of its size like most worms, due to its body having massive resistances.
  • Sequential Boss: Once you kill the damn thing, nothing happens for a bit...then the Devourer returns, extra powerful and extra angry.
    It's not over yet, kid!
  • Stronger with Age: Countless years of hunting, killing, and consuming its foes along with their power has turned this creature from a mere worm into the cosmic serpentine wrecking ball you have to fight.
  • Super-Persistent Predator: Once summoned, the Devourer of Gods will not stop until you kill it or it kills you. Even if you teleport away from one corner of the world to the other, it will hunt you down.
  • Super Speed: Can effortlessly overtake the player, even with Seraph Tracers equipped... which isn't much, but it also scales with their acceleration. While this isn't too significant in normal gameplay, using other mods to massively increase your speed will also increase the Devourer's speed as he chases you. Even if you're hurtling along at over four thousand miles per hour, the Devourer of Gods is still faster.
  • Theme Music Powerup: As if its Leitmotif, Scourge of the Universe, wasn't awesome enough, when you kill it all goes quiet for a bit...then Universal Collapse kicks in as the Devourer unleashes its final form in one last attempt to destroy you.
  • Took a Level in Badass: The Devourer used to be nothing more than a direct Destroyer clone that could be fought immediately after Plantera. It was then overhauled, buffed, moved to post-Providence, and continued receiving a mixed bag of balance adjustments - culminating in its infamous Revengeance ability. It has been nerfed a bit since, but it still remains one of the deadliest bosses the mod has to offer.
  • Trash Talk: Yes, really. The interdimensional god-killing cosmic worm is not only the chattiest boss, but also very prone to throwing out taunts and snide remarks whenever the opportunity presents itself.
  • Turns Red: When you deplete its enormous health bar, all becomes calm for a few seconds...then he comes back with a new sprite and a deadly new arsenal of attacks.
  • Villain Respect: After reaching a stalemate with Signus, it eventually developed a grudging respect for the ethereal assassin.
  • Wolfpack Boss: It summons a smaller version of itself christened the "Devourer of Thots" in Revengeance Mode when at 60% life. When at 20% life, it will summon 2 more.
  • You Will Not Evade Me: His homing laser portals in his second form will teleport to players if they stray too far away from them.

    The Bumblebirb

Odd creatures created by Yharim as a failed experiment to create clones of Yharon's species. They were left to their own devices in the Jungle, where they wander aimlessly and attack anything that poses a threat to the Jungle Tyrant. They can reproduce with themselves to create new Bumblebirbs, however they have a hormone that shuts down their reproduction if there are too many Bumblebirbs nearby. Meant to be fought in the Jungle after the Devourer of Gods and right before Yharon.

Bumblebirbs drop several weapons and Effulgent Feathers, which are used to make Silva Armor and craft the Dragon Egg to summon Yharon. In Revengeance, it also drops the Red Lightning Container to permanently buff your Rage Mode damage.
  • Degraded Boss: Weaker Bumblebirbs are spawned by Yharon during his final phase.
  • Extra Eyes: It's not very obvious, but the Bumblebirb actually has four eyes much like the being they were cloned from.
  • Flawed Prototype: A failed attempt to create more of Yharon's species resulted in these Bumblebirbs.
  • Fluffy the Terrible: Is an efficient killer and a scarily dangerous boss, but its ridiculous name makes it hard to take seriously.
  • Leitmotif: "Murderswarm".
  • Lightning Bruiser: Moves impossibly fast, has above-average health, and shears off enormous amounts of HP with each attack.
  • Mini-Boss: Usually regarded as this, mostly due to having a very simple AI compared to most bosses. However, even with its below-average difficulty, it's still not one to be underestimated - it's far stronger than your average miniboss.
  • Self-Duplication: All Bumblebirbs have the ability to do this. The only thing stopping them from overpopulating the Jungle is their built-in protocol that shuts down their reproductive hormones if there are too many Birbs nearby.
  • Shock and Awe: The Bumblebirb doesn't use any lightning attacks, but it seems to have a red lightning theme going on. It creates red electricity whenever it flaps its wings, its feathers constantly crackle with it, and it drops an item called the Red Lightning Container.
  • Unskilled, but Strong: Unlike most of the other endgame bosses which use complex bombardments of projectiles and gimmicky mechanics to screw you over, the Bumblebirb's only method of attack boils down to "run at the player and ram them". However, it deals so much damage with each attack that the Birb can get away with it.
  • Vocal Dissonance: Used to make the same sound as the Lost Girl/Nymph upon being hit.
  • Wolfpack Boss: It can spawn small Bumblebirbs to attack alongside it, although it can only have 3 out at once.

    Jungle Dragon, Yharon
The air is getting warmer around you.

The Jungle Tyrant's personal pet and the current resident Final Boss, who must be fought in the Jungle. Given to Yharim as an egg by his mother, the egg prematurely hatched when it was tossed into lava along with its owner's family. Yharon then saved Yharim from a fiery demise before assisting Yharim in his rise to power by crushing all the previous Jungle tyrants. Now, he serves as Yharim's most powerful and deadly minion, as well as his closest friend.

Uniquely, Yharon will flee battle upon reaching low health the first time you fight him, buffing up the Solar Eclipse while allowing it to drop Darksun Fragments, an endgame crafting material. Taking down a buffed Mothron will unlock Yharon's final phase and subsequently allow him to be killed.

Drops a number of extremely powerful fire-based weapons and Yharon Soul Fragments which are used in endgame recipes. Killing him also allows Auric Ore to generate in your world, unlocking the highest tier of standard weaponry available.
  • Blow You Away: Takes this Up to Eleven by creating flaming tornadoes. He can create smaller Flarenados which split apart eventually, along with gigantic Infernadoes. He also creates special rainbow Infernadoes along the border of his arena which One-Hit Kill players.
  • Bullfight Boss: He charges a lot, three times in his very first phase alone.
  • Death from Above: In his final phase, he has the ability to rain down massive quantities of flaming meteors from the sky.
  • Death Song: The lyrics to "Roar of the Jungle Dragon" lead up to his death, with the Jungle Dragon using his last words to warn his master of the great danger that the Player poses to him.
    If you proceed, I will not blame you.
    I will move forth and win your war.
    But if I should die before you continue,
    You shall have heard my final dying roar.
  • Defiant to the End: "Roar of the Jungle Dragon" makes him out to be this, fully aware that he is to die but will continue fighting for Yharim out of Undying Loyalty.
  • Disc-One Final Boss: Played with. Should one factor in the Superbosses, he is this, but is still the Final Boss otherwise.
  • Doppelgänger Spin: As he takes damage, several transparent clones of himself appear around him a la Brain of Cthulhu.
  • The Dragon: Yharim's personal pet, closest companion, and deadliest minion. Bonus points for actually being a dragon.
  • Empathic Environment: Tints the screen orange, possibly from the enormous amounts of fire he's tossing around.
  • Extra Eyes: If you look close enough, you'll notice that he actually has four eyes.
  • Feathered Fiend: Has many traits associated with birds, and most certainly not your friend.
  • Final Boss: Of course, Supreme Calamitas still trumps him in difficulty, but he is the ultimate normal boss in the mod.
  • Flunky Boss: Spams Detonating Flames, which chase players while shooting fireballs. He also spawns small Bumblebirbs in his final phase.
  • Hoist by His Own Petard: He gave this to the original Jungle tyrants - if they hadn't thrown Yharon's egg into the lava just to spite his family, Yharon wouldn't have hatched and went on to annihilate them later.
  • Hold the Line: When he hits critical health (after killing a buffed Mothron), he will go invulnerable for about a minute, regenerate his entire health bar, start spamming small Bumblebirbs, and begin raining fireballs from the sky a la Betsy.
  • Homing Projectile: Can spam homing fireballs. In his last phase, some of the meteors that he rains from the sky will track players.
  • Invincible Minor Minion: In Revengeance, he summons an Angery Flame in his last phase which is invincible and chases players while shooting homing fireballs.
  • Morality Pet: Yharon is living proof that Yharim still has the capacity to love another living thing.
  • Leitmotif: "Infernal Catharsis".
  • Lightning Bruiser: Moves incredibly fast, has enormous HP, and deals near-lethal damage with each hit.
  • Living Emotional Crutch: Yharon was the only thing comforting the Jungle Tyrant during times of depression.
  • No Final Boss for You: The first time you bring him to low health, Yharon actually deems you an unworthy opponent and leaves the fight entirely, making you unable to kill him. In order to unlock his last phase (and therefore kill him), you need to kill a newly-buffed Mothron, then challenge him again.
    "My dragon deems you an unworthy opponent. You must acquire the power of the dark sun to witness his true power."
  • Our Dragons Are Different: Despite having a lot of draconic traits, Yharon has quite a few avian attributes, such as his feathers, beak, and wings. He also seems to have a phoenix motif of sorts, since he kind of looks like one and gets "reborn" in his last phase.
  • Playing with Fire: He uses all manner of apocalyptic-level fire attacks, from explosive fireballs to meteor showers to gigantic flaming tornadoes. Its a miracle the place isn't blasted into a crater yet.
  • Taking You with Me: Upon death, he explodes into a massive ring of fireballs that home in on the nearest player.
  • Teleport Spam: Can do this in his semi-final phase.
  • Tornado Move: Flaming ones that can possibly pull off a One-Hit Kill, no less.
  • Turns Red: He very clearly defines that he wants the player to remain in a certain area (read: gigantic One-Hit Kill firenadoes), and should you leave the area he gets even more dangerous until you return.
  • Undying Loyalty: The lyrics to "Roar of the Jungle Dragon" all but state that Yharon knows that he's already lost the fight, but he still persists because of his absolute loyalty to Yharim.
  • Wreathed in Flames: During the transition to his last phase, his entire body becomes engulfed in harsh flames.


    Supreme Calamitas
Do you enjoy going through hell?

The true form of Calamitas and the first Superboss to be introduced. The ultimate boss of the Calamity Mod, designed to be a final test of both a player's skills and their power.

Supreme Calamitas drops Calamitous Essence to make Shadowspec Bars, which in turn allow you to make your own developer-grade Game-Breaker items. On expert, she also drops an additional one of said developer items, and she drops additional loot when fought on even harder difficulties.
  • Always Someone Better: As powerful as she is, she says that she stands no chance against Yharim.
  • Bonus Boss: One of currently several planned Superbosses.
  • Boss Banter: As powerful as she is, she's even more talkative than the Devourer of Gods.
  • Bragging Rights Reward: Killing her on Death Mode will give you the Levi item, which allows you to summon a mini Leviathan pet. This is a Shout-Out to the Youtuber Leviathan, who does numerous challenges involving the mod, including no-hit fights with all the bosses in Death Mode, including Supreme Calamitas herself.
  • Bullet Hell: Every now and then, she will turn invulnerable fly off the screen and spam a gridlike barrage of fireballs along with homing blasts that erupt into more bullets. As she loses HP, the bullet-hell phases become more and more hectic.
  • Damage-Sponge Boss: She blows every boss out of the water with a HP of 10,000,000 on the highest difficulty, and not much less on easier ones.
  • Deadpan Snarker: She's just as snarky as the Devourer of Gods. If not, even more so. Whenever she's summoned after the player has been killed by her for enough times, she will start the battle with a mocking quote.
    After 4 deaths: "Don't get me wrong, I like pain too, but you're just ridiculous."
    After 5 deaths: "You must enjoy dying more than most people, huh?"
    After 20 deaths: "Do you have a fetish for getting killed or something?"
    After 50 deaths: "Okay, I'm done counting. You probably died this much just to see what I'd say"
  • Easter Egg: Kill her on your fourth attempt, and you will get an item called Lol. It instantly kills the player if equipped, but if their name is Fabsol it grants complete immunity to damage.
  • Eldritch Abomination: Her very presence hampers your healing, she is ungodly powerful and she can spawn clones of herself which are plenty damn nasty in their own right as well, and if the backstories involving her are of any indication, she is capable of drying up entire oceans and laying waste to entire civilisations.
  • Empathic Environment: Tints the screen blood-red.
  • Face Death with Dignity: As constrasted to her Villainous Breakdown throughout the fight, she reacts to her death with Dull Surprise. Given that she knows she'll come back anyway due to the player re-summoning her to farm more Calamitous Essences and Developer Weapons, this is justified.
  • Faux Affably Evil: Her defeat quotes show a friendly attitude to the player despite how much of a total sadist she is, like congratulating the player and giving them a reward. This may be the result of her Medium Awareness.
  • Flunky Boss: She can summon Supreme versions of her brothers to assist her at 45% HP, and can summon Soul Seekers at 20% HP. Twice throughout the fight, she can also summon a large worm boss called Sepulcher to help her out by spamming brimstone blasts.
  • Invincible Minor Minion: At about 30% HP, she will summon several giant brimstone monsters that slowly chase the player.
  • Leitmotif: Shares "Raw, Unfiltered Calamity" with her first form.
    • She's confirmed to be getting her own theme (Stained, Brutal Calamity) in a later update, however.
  • Leaning on the Fourth Wall: Some of her quotes show that she has some knowledge about the game mechanics, such as cheating and calling the weapon that she dropped as a "reward". Case in point, after 20 seconds after she's been defeated:
    "At long last I am I'll just keep coming back, like you. Funny how that works...isn't it?"
  • Level Scaling: Her damage scales with how much HP you have.
  • Lightning Bruiser: The most extreme version in the game. She can dash across the screen in a fraction of a second, has tons of health, and can kill you swiftly in a few hits.
  • No Fair Cheating: She has a large number of special restrictions in place to prevent you from cheesing her fight.
    • She scales her damage depending on how good your equipment is.
    • She builds her own arena around you to cut off mobility and stop you from using yours.
    • If you survive tanking a certain number of her attacks or take less than 20 damage from one of them, she will instantly kill you.
    "You aren't hurting as much as I'd like...are you cheating? trollface.png"
    • Mounts and teleporters/Magic Mirrors are disabled during the fight.
    • She kills the Nurse when the fight begins. In addition, healing from sources besides potions is greatly reduced.
    • She can still kill you with her hit cap if you are under godmode.
    • If you somehow One-Hit Kill her or similarly kill her too quickly (like using the butcher function in Cheat Sheet), she won't drop anything except Supreme Healing Potions.
  • Playing with Fire: Launches fireballs and flaming missiles that explode and inflict the devastating Abyssal Flames debuff.
  • Recurring Boss: A much, much harder version of Calamitas.
  • Red Eyes, Take Warning: She IS the red eye.
  • Shielded Core Boss: Twice during her fight (at the start and at 8% HP), she will generate a number of Brimstone Hearts that make her invincible until destroyed. Made harder by the fact that she also summons the Sepulcher, a large worm boss for you to contend with.
    • Not to mention that the Sepulcher itself is one as well - it can't be harmed normally, but will die instantly when all of the Brimstone Hearts are destroyed.
  • Shout-Out: Her dialogue used to be more or less a blatant Expy of Sans.
    "You got hit too many times...noice. Did you take lessons from Leviathan?"
  • Smug Snake: She’s powerful, there’s no denying that, but she’s very cocky and smug when she enters the fight, and as she starts to lose her cocky demeanour disintegrates into impotent rage and ultimately despair when she realises that she’s too weak to win and can't convince you that Yharim is indeed invincible.
  • Sore Loser: Zigzagged. If you beat her on your first attempt, she accuses the player for cheating, even if they really didn't. However, she is far less sore outside of this - she will downright congratulate you if you beat her within a reasonable number of attempts, and she still drops a Developer Weapon after accusing the player for cheating, all while being calm about it.
  • Straw Nihilist: She wholeheartedly believes that there is nobody who can stop Yharim, and constantly implores the player to just give up on trying to beat him.
  • Tranquil Fury: If you use Cheat Sheet's butcher function on her or use an overpowered weapon from another mod to One-Hit Kill her, not only will she only drop healing potions, she'll reply with a single chilling line.
  • True Final Boss: The current hardest boss in the Calamity Mod.
  • Turns Red: Exiting her arena with something like the Rod of Discord will cause her to enrage, massively boosting her projectile speed and making her take Scratch Damage from all attacks.
  • Villainous Breakdown: As you slowly overpower her in her fight, she’ll retort with begrudging approval, then disbelief and rage before sinking into despair as she realizes she's about to be defeated.
  • Villain Respect: After beating her down enough, she'll react with reluctant approval before the aforementioned Villainous Breakdown. In addition, she will straight-up praise you for beating her within a reasonable number of deaths.
    "One death? That's it? ...I guess you earned this then."
    "Two deaths. Good job. Here's your reward."
    "Third time's the charm, huh? I guess it is. Here's a special reward.
  • With Great Power Comes Great Insanity: The curse Yharim inflicted upon her after she betrayed him has turned her into a being of godlike power and speed rivaled only by the Devourer of Gods itself. It's also driven her completely Ax-Crazy.


A Lethal Joke Character spawned forward from memes in the Discord. Whether or not you'll take it seriously is entirely at your discretion. It is intended to be fought after Supreme Calamitas, with its summon dropping from BOHLDOHR after the aforementioned condition is met.

As of now, THE LORDE has been removed from the game, and using his summon will crash it.

Strangely enough, it doesn't drop anything except 2000 Platinum Coins.
  • All Your Powers Combined: Randomly cycles through the vanilla enemy AIs very frequently. This is also its undoing as it can become "None," a blank spot early on in the AI list, or any number of AIs that would force it to despawn.
  • April Fools' Day: The spawn of this, being released on that very day.
  • Ascended Meme: A Running Gag in the Discord that became a real boss.
  • Damage-Sponge Boss: Has a whopping 25 million HP, more than Supreme Calamitas herself.
  • Early-Bird Cameo: It's an early sprite for Yharim's in-game appearance but with googly eyes.
  • Hold the Line: At about 500k HP it will become impervious to damage for 100 seconds. During this time you must outlast it until it loses its resistance, allowing you to finish it off.
  • Lethal Joke Character: An immensely powerful boss that can use any vanilla enemy power and can disable all of your armor and accessories. Of course, it's all Played for Laughs.
  • Level Drain: Inflicts a debuff aptly named "NO U", which temporarily removes all your armor and accessories.
  • Money Spider: While every enemy in Terraria is this by default, THE LORDE takes this trope Up to Eleven because, like stated above, it drops 2000 Platinum Coins upon death.
  • No-Damage Run: Essentially a boss fight where you cannot afford to take any damage, since taking damage will give you the NO U debuff, which is practically a death sentence.
  • No-Sell: Like the Devourer of Gods, the Butcher function in Cheat Sheet does nothing to it.
    • Its NO U debuff is the only thing that can nullify the Lol accessory, which normally makes you invincible to all damage.
  • Purposely Overpowered: THE LORDE is not designed to be a particularly fair boss - it's a joke boss, designed as a mocking parody of poorly made final bosses. As such, it is capable of killing you in ways that would normally be considered downright cheating, such as turning invisible before teleporting on top of you and using its NO U debuff to inflict a One-Hit Kill. It gets off easy, however, due to its Joke Character status and the fact that it doesn't drop anything particularly useful.
  • Retcon: Was removed entirely, and using the NO U (now named SYNTAX ERROR) kills the player.
  • Sequence Breaking: Defied. Using the "NO" item before defeating Supreme Calamitas will inflict NO U for an infinite amount of time until THE LORDE either dies or despawns.
  • Stylistic Suck: Done on purpose, having an obviously bad graphic with googly eyes and being a Take That! to poorly-created mod bosses.
  • Take That!: At poorly-created mod bosses who's difficulty stems from lazy design or overpowered gimmicks, the most notorious of which are those featured in the Tremor Mod.
  • Turns Red: Get far away enough, and THE LORDE will engage you in a nonstop chase a la Dungeon Guardian.

Other Characters and Walking Spoilers

Concept art of the currently planned design.

The former Sea King who ruled the oceans with Cnidrion and the Desert Scourge. By the time the player arrives, his title is all but irrelevant as the ocean he ruled was evaporated by Calamitas for refusing to directly resurrect the Moon Lord. Word of God states that he probably escaped to the Abyss and may return some time in the future.
  • Fish People: A variant; he's an anthropomorphic leafy seadragon.
  • The Ghost: Although very much alive, he disappeared from Calamity's timeline after he lost his kingdom. Supposedly, he's hiding somewhere in the Abyss, but has yet to make an in-game appearance.
  • Made of Iron: Assuming he did make it to the Abyss, he's either this or has extra emphasis on The Ghost, since the deeper you go, the more the Abyss's creatures deal in assassination instead of fair fights.
  • Shock and Awe: Is implied to have lightning powers, as Cnidrion sometimes carries one of his artifacts which electrifies attackers.
  • Sole Survivor: Currently the only lore exclusive character against Yharim to be implied as still alive.
A man with unparalleled strength and chivalry, Braelor was a legendary hero who waged war against Yharim for countless years in an attempt to reclaim his hometown from the Jungle Tyrant.
  • Doomed Hometown: The reason he decided to rebel against Yharim was to reclaim his hometown.
  • Healing Factor: He was the original owner of the Tarragon armor, which granted him this. Blessed by the gods with unmatched endurance, its metal grows like a living being to mend its injuries and draws upon the energy of the planet to protect and heal its user. It's not too hard to imagine how Braelor fended off the onslaught of the Jungle Tyrant's forces for years on end.
  • Heroic Second Wind: After wandering through the mountains for a while alongside his newfound companion, Statis, he eventually heard the news of Yharim's recent loss to the Profaned Guardians and his retreat to the Jungle. Aided by his new friend and the will of Providence, Braelor returned with newfound awareness of his power and carved a mighty path through the Jungle. Unfortunately, Yharim had recruited a number of eldritch monstrosities in his absence...
  • La Résistance: He led one against Yharim. While they were an actual threat to him, they ultimately failed.
  • Men of Sherwood: He commanded barely a few hundred men, yet he and his squad managed to ward off attacks from every direction for years.
  • One-Man Army: On several occasions, Braelor sent his men to defend other locations while he faced down whole armies alone - and left the battlefield victorious.
  • Posthumous Character: By the time the player arrives, he was already killed by one of Draedon's mechs.
  • Precursor Heroes: Was one of them before the player, alongside Statis.
  • True Companions: Upon encountering Statis, Braelor became the first person he could truly call a friend.
  • The Worf Effect: After being the unstoppable One-Man Army against Yharim's forces for so long, the Jungle Tyrant himself decided to intervene, riding his pet dragon, Yharon, with a fearsome blade in his hand, and decimated Braelor's defenses like a living force of nature.
The ninja assassin who was seeking revenge against Yharim for killing the previous Jungle tyrants, who he still saw as his masters.
  • Final Solution: Was a victim of this when his family and ninja clan that spanned many generations was wiped out by the previous Jungle tyrants, who were even more paranoid and dictatorial than their successor would become - If they believed anyone to pose the slightest threat to their reign, they disposed of them with little provocation.
  • From Nobody to Nightmare: Scouring Statis' village after razing it to the ground, the jungle overlords found one person they had overlooked: a baby that posed no threat, yet still bore the blood of powerful warriors. To exploit the child's great potential, they took him in and raised him.
  • Heroic Second Wind: Eventually, the time for hiding came to an end; seeing their opportunity, Statis returned alongside Braelor to strike against the Tyrant...not knowing what devastating forces Yharim had recruited in their absence.
  • Ironic Death: The one he eventually died to was none other than Signus, who was the origin of his clan's techniques, and an assassin himself.
  • Not So Different: To Signus, the person who defeated him. Both are Professional Killers who never failed an assassination before, and their only failure was against Yharim, which eventually led to their downfall. To make matters worse, the arts of Statis' clan were derived from Signus.
  • Posthumous Character: By the time the player arrives, he had already died in an attempt on Yharim's life, at the hands of the then newly-recruited Signus.
  • Precursor Heroes: Was one of them before the player, alongside Braelor.
  • Professional Killer: Was raised to be this. After his old masters, the previous Jungle tyrants, were gone, his ultimate goal was to perform an assassination against Yharim.
  • Super Empowering: The Statigel armor, which was the combat gear of Statis' ninja clan, is infused with the energy of the Slime God, whose power they drew upon.
  • True Companions: Became this with Braelor, who was the first person he could truly call a friend.
  • Tyke-Bomb: He was isolated from society, immersed in the killing arts from childhood. Statis grew up as little more than a tool that brought silent, untraceable death.
  • Undying Loyalty: When Yharim overthrew the old rulers, Statis appeared before the new Jungle Tyrant and declared his fealty...but, indoctrinated since infancy, he still saw the previous overlords as his masters.
  • Weather of War: Was a victim of this; a blizzard at the mountain ruined his assassination attempt against Yharim, causing him to lose his target for the first time, unable to match the speed of the tyrant's dragon, Yharon.
  • You Killed My Father: Because of his Undying Loyalty to the previous Jungle tyrants as his masters, Statis bided his time and waited, fulfilling the missions given to him - and always watching for his chance to personally assassinate Yharim.
Concept art of Yharim.
The resident Big Bad and Jungle Tyrant. Not too much is known about him besides the fact that his family was thrown into the Underworld for an unknown offense, and Yharon saved him before the pair crushed the corrupt leaders of the Jungle and took over as its master. Yharim's goal seems to be total control of Terraria and his influence is felt throughout almost every aspect of the mod, but he has yet to appear in person. This is to change soon, where he is planned to be one of the Superbossss, and seemingly the last in progression.
  • Affably Evil: If the lore items really are written by him, the language used in those items are pretty formal, and in Plantera's lore item, he even wishes you luck in dealing with the fallout that is the post-Plantera Dungeon and the post-Plantera Abyss.
  • Always Someone Better: To the player once the Auric Tesla armor is acquired. His official appearance shows him clad in what appears to be a mechanically augmented version of the armor, fueled by his Stims. This also gets inverted somewhat - one of his family's superweapons, the Astreal Defeat, is eventually made obsolete by the Heavenly Gale, one of the two ranged weapons created to compete with the Exoblade (the other being the Photoviscerator.)
  • Arch-Enemy: He has made several over the course of the story. Notable ones are Braelor, Statis, Permafrost, and Providence.
  • Badass Cape: Wears a long blue-and-gold one that borders on All-Encompassing Mantle.
  • The Beastmaster: He seems to have a penchant for controlling beasts. Yharim is the most notable example but he has also shown to be able to control Queen Bees (and by extension the Plaguebringer Goliaths).
  • Cool Sword: As seen in his official artwork, he wields a massive, 3-meter long, intricate broadsword which bears a striking resemblance to the True Tyrant's Ultisword you can make in-game.
  • Asskicking Equals Authority: The ruler of the jungle, and by far the most powerful fighter in his forces except for Draedon once he becomes the Big Bad. He's been stated to be powerful enough to deliver Curb-Stomp Battles to the likes of The Devourer of Gods and Supreme Calamitas.
    • Once Yharim realized that Braelor posed an actual threat, he and Yharon went to deal with his army personally. It's stated that Yharim was so insanely powerful (the lore describes him as a "living force of nature") the only reason Braelor survived was because his men all threw themselves at Yharim to buy him time.
  • Bling of War: Much like the Auric Tesla Armor it's based off of, his Powered Armor is golden.
  • Deal with the Devil: After hearing that the Devourer of Gods had just butchered a platoon of his best soldiers, he struck a deal with the worm: in exchange for his eternal loyalty, he would feed the Devourer any entities of power he could capture. The Devourer accepted.
  • The Dreaded: Word of God states that the only thing that the Devourer of Gods fears is Yharim himself, because he could defeat the Devourer in a few hits when at full power.
  • Despair Event Horizon: The lyrics of "Roar of the Jungle Dragon" imply that he's hit this, to the point where he may have purposely let the player become a being of godlike power just to watch them lay waste to his legacy and empire.
  • Even Evil Has Loved Ones: Despite all his asshattery towards practically everyone he meets, he seems to genuinely love his pet Yharon. In addition, the murder of his family was stated to be his Start of Darkness.
  • Even Evil Has Standards: When he accidentally created a type of infectious nanomachines that could rot their victim from the inside out, even he promptly declared them too dangerous for use and locked them away. Unfortunately for him, someone snuck them into his newest project, infecting the entire Jungle and creating the Plaguebringers, Plague Chargers, and Plaguebringer Goliaths.
    • The lore items gotten from certain bosses (which are implied to be written by him) show that he has at least a few redeeming qualities, such as pitying the Desert Scourge (which he inadvertently created).
  • Evil Is Petty: His default response to things he disagrees with is usually Disproportionate Retribution.
    • When the Sea King Amidias refused to help him resurrect the Moon Lord, Yharim had Calamitas evaporate the whole ocean, laying waste to his kingdom and causing the Desert Scourge to go on a rampage.
    • He had Calamitas lay waste to the Underworld capital just because he hated it. Similarly, he wanted to learn ice magic from Permafrost just so he could lay waste to the Underworld.
    • On the subject of Permafrost, when the archmage refused to help him Yharim trapped him and his fortress in a chunk of ice forever, creating Cryogen.
    • Upon hearing that Calamitas betrayed him, he promptly cursed her with a spell so powerful that even though it was imperfectly cast, it still managed to drive her into insanity.
  • Evil Overlord: He rules over the jungle from his temple with an iron fist and commands an entire army of incredibly powerful beings such as cyborgs, reality-warping abominations, and god-level beasts.
  • Freudian Excuse: His family was incinerated in the Underworld and only he survived because Yharon saved him. He consequently decided to overthrow all of the previous Jungle Tyrants and take over in their place.
  • Hoist by His Own Petard: Pretty much everyone Yharim hurt in the lore ends up being useful in one way or another to the player, who's objective is to kill him.
  • I Have Many Names: He has a lot of titles that pop up throughout the game, although the most common ones are Yharim, Jungle Tyrant or Yharim, Lord of the Cosmos.
  • Jerkass Has a Point: It's implied that the Underworld was indeed morally corrupt beyond repair.
  • Lean and Mean: Nine feet tall and has the ideal slim body for the job.
  • Light Is Not Good: Decked out in his own version of the Auric Tesla armor, which was already golden in coloration.
  • Lizard Folk: Under the helmet, Yharim is in fact a reptilian, if Wordof God is to be believed.
  • Mad Scientist: He's mentioned several times to conduct many scientific experiments. He created the Plaguebringers through nanotech/robotics and the Bumblebirb through genetics, and he also is implied to have made Yharim's Stimulants, a potent buff consumable. That's not getting into his actual armor of choice, which is a Powered Armor variant of the Auric Tesla armor.
  • The Plague: He created a version of this by making virulent nanomachines that would rot away at the target while using its life force to sustain itself. While he tried to contain it, they eventually got released, with disastrous consequences.
  • Powered Armor: Wears a mechanized version of the Auric Tesla armor.
  • Roaring Rampage of Revenge: Right after Yharon saved him from being immolated, his next move was to use Yharon's power to annihilate all the leaders of the Jungle and take over.
  • Summon Bigger Fish: His new solution to most of his problems is to throw the Devourer at it, which is odd considering that he's canonically many times more powerful than the cosmic serpent.
  • The Unfought: While he is intended to be a Final Boss, currently he is nowhere to be found besides in the lore.
  • World's Strongest Man: If Supreme Calamitas' words are taken as the truth, Yharim has yet to lose a single battle.

Concept art of Draedon.
Yharim's weapons/armor expert and his go-to man for weaponsmithing. Little is known about him, and most of his lore is spread solely through Word of God and Word of Dante.

He is responsible for creating the Exoblade, a powerful amalgamation of blades from across the world, and the Draedon's Forge is named after him. In this version of Terraria's story, he also built the Mechanical Bosses.

At some point in the story, he becomes overcome with power to rival the Tyrant King himself, which goes to his head. From there, he becomes one of the four Superbosses.
  • A God Am I: Declares himself one at the end of the Blood Coagulant video.
  • A.I. Is a Crapshoot: Was on the receiving end of this when the Mechanical Bosses (that he built) suddenly went rogue and ran amok, something he failed to fix before they ran off to do whatever they pleased.
  • Always Someone Better: The player is this to him. Not only do they somehow pick up on his master craftsmanship, they recreate his signature weapon and even his augmented heart. As if that's not enough, the player then proceeds to make six more weapons in the style of his Exoblade, all of which are of comparable or even greater power.
    • On the flip side, he's this to Yharim. You know of his Ultisword? Well, with Draedon's sword being the Exoblade, it vastly outclssses the tyrant's blade.
  • Badass Transplant: He apparently has a mechanical heart, the aptly named Draedon's Heart, which can utilize nanomachines, not unlike a certain senator. When the player uses it, it passively allows them to build up Rage while allowing them to gain massive buffs when standing still. When Draedon himself utilizes it, he apparently becomes a Physical God strong enough to ascend from Yharim's right-hand man to one of the four to five Superbosses of the mod.
  • Bonus Boss: Planned to be a Superboss with Goozma, Supreme Calamitas and Yharim.
  • Cool Sword: You know the Exoblade? As in the insanely powerful Infinity +1 Sword which has to be built up over the course of the whole game and can pretty much deliver a Curb-Stomp Battle to nearly anything? Well, that was originally Draedon's personal weapon.
  • The Dog Was the Mastermind: A minor character who isn't even shown as antagonistic, being a Punch-Clock Villain, becomes a warrior around as strong as Yharim, proclaims himself a Physical God (likely due to his nanomachines), is in the Superboss tier, and is rumored to be The Chessmaster who organized every facet of your journey. Holy shit.
  • Dragon Ascendant: The Jungle Tyrant's right-hand man who would soon become even more powerful than him.
  • Evil Laugh: Has one laced with Creepy Monotone before The Stinger at the end of Blood Coagulant.
  • Expy: Of Senator Armstrong, mainly in the fact that they both use nanomachines produced by an augmented heart.
  • Extra Eyes: Played with. He seems to lack conventional eyes, but each "eye" seems to be made up of numerous other ones arranged into a hexagonal formation.
  • Lean and Mean: He's very tall (about 14 feet) and incredibly skinny. He also becomes a rather malicious Physical God.
  • Machine Monotone: Seems to display this, if his cameo at the end of Blood Coagulant is anything to go off of.
  • Mad Scientist: Aside from crafting the weapons for Yharim, he also built the Mechanical Bosses. And according to Yharim, the Destroyer could have proven useful as a resource collector if Draedon didn't have an obsession with turning everything into a tool of destruction.
  • Punch-Clock Villain: Sees doing work for Yharim as some sort of side job and is unusually complacent in doing what he does, suggesting that he lacks malevolent intention. Additionally, the Mechanical Bosses were not inherently malevolent until their AIs went rogue and ran away. He won't be this for long.
  • Skele Bot 9000: His body vaguely resembles a robotic skeleton - although it's mostly because of how thin he is.
  • Ultimate Blacksmith: Is more than capable of forging the most powerful weapons in Calamity Mod, with the most notable one being the legendary Exoblade, and is heavily implied to be responsible for the creation of Yharim's Powered Armor as well. Aside from this, he's responsible for the Draedon's Forge, which is even more powerful than the cultists' Ancient Manipulator from the vanilla game and is required to make nearly every endgame weapon in the game.
Goozma's currently planned sprite.
The amalgamation of every slime ever killed by the player, serving as one of the planned Superbosses of mod, in the same 'tier' as Supreme Calamitas, Yharim and Draedon.

Not to be confused with ya boy, Guzma.