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The player character starts off with nothing but a shortsword, pickaxe, and axe. (If you bought the Collector's Edition, you also get a carrot which you can use to summon a pet bunny.) Over the course of the game they will explore the world, build a home, find treasures, defeat ever more challenging foes, and eventually, plunge the world into a battle between the ancient spirits of light and dark.
- The Ace: Architect, engineer, tactician, warrior, mage, technician, electrician, inventor, alchemist, savior, destroyer. The PC is all these things and more. There is no weapon they cannot wield, no metal they cannot forge, no creature they cannot slay, no power they cannot control, and no challenge they cannot conquer.
- Ambiguously Evil: It's not hard to see why some believe the fan theory mentioned on the YMMV page. They are willing to sacrifice others to ensure their life improves and most bosses seem to avoid them unless necessary.
- Anti-Hero: Regardless of the decisions they make, the player does a few very questionable things during their journey, like murdering the Clothier and Guide with their respective voodoo dolls to draw the bosses connected to them out of hiding.
- Clothes Make the Superman: The large majority of the player's power resides in the clothing and accessories that they wear. Often, these items are enchanted to bestow perks in addition to their function (for example, "Armored" Rocket Boots increase your defence as well as their normal function of allowing you to fly).
- Celestial Body: They can acquire this with the hardmode-exclusive Twilight dyes.
- Curb-Stomp Battle: As the player becomes more powerful, they will start becoming able to steamroll enemies that previously put up a good fight. By the time you unlock Hardmode, you could be one-hit-killing many regular enemies.
- Did You Just Punch Out Cthulhu?: Many of the bosses the player character fights are Eldritch Abominations — in some cases, they are literally parts of Cthulhu himself. By the end of the game, he/she beats the Moon Lord, the brother of Cthulhu and the closest it gets to the real deal himself.
- The Gardener: Can be a Mundane Gardener who grows a variety of plants both magical and mundane.
- Heroic Mime: The player character has no dialogue, but communicates with NPCs just fine.
- He Who Fights Monsters: Eventually after punching out many a Eldritch Abomination, the amount of sheer power that the character gains effectively makes them one themselves.
- Humanoid Abomination: An end game character is both much more durable than the average mortal and fully capable of wielding weapons and magics that are nearly cosmic in scope. They can have minions made of star matter, armor forged solar energy and other worldly metals, weapons that summon falling meteors with every swing, ect. Very little about how the player fights is at all human in the end and a battle involving a high tier player can look outright terrifying from an outside perspective. On a side-note, the more stranger dyes can also turn you into one visually as well, if you wish to complete the image.
- Instant Expert: No matter what weapon/item s/he gets their hands on, they are able to wield it flawlessly. Be it swords, bows, guns, magic spells of untold power, yoyos...
- Kleptomaniac Hero: You can take everything. Literally everything. Found an underground cabin? You can loot any treasure chests that are in it. Then take the chest. Then steal all the light fittings. Then disassemble the walls and take those too.
- Nice Job Breaking It, Hero!: By killing the Wall of Flesh, the player turns a slightly corrupted world into one threatened to be overrun by huge, competing, pockets of Hallow and Corruption or Crimson.
- One-Man Army: The player will kill thousands of enemies over the course of a full game. The game awards the player with banners for every 50th kill of a particular enemy, and the player can also obtain a Tally Counter which tells them exactly how many enemies of each type they have killed. In some of the special events, such as the Goblin Invasion, they actually do take on entire armies single-handedly.
- Person of Mass Destruction: The amount of devastation you can wreak is cataclysmic. It also doesn't help that your weapons tend to be stuff along the lines of Wave-Motion Prisms , rapid-fire rocket launchers or swords that literally pull stars from the heavens and send them crashing onto your enemy.
- Villain Protagonist: In order to progress past a certain point, in this game that averts Death Is Cheap when it comes to the NPCs, they need to summon, then kill, an Eldritch Abomination by sacrificing the current guide. Although how they feel about this depends on how they view the guide and his frustrating quirks.
- Was Once a Man: The player starts out perfectly baseline mortal, although as time goes on and they start both gathering all sorts of energies and weaponry, they eventually become an unnatural Physical God.
- You Gotta Have Blue Hair: The player character can have any hair color, and the random character generator will happily give you blue, pink, or any color of hair.
As a Whole
All NPCs can move into a player's town if they have, a room with light, a large item (such as a table, dresser, bookshelf, etc.) and a comfort item (such as a chair, bench, bed, etc.), a door and some criteria specific to the NPC.
- Action Girl: Each and every one of the female NPCs can defend themselves when push comes to shove.
- Action Survivor: Most of them are relatively normal people with normal jobs- unfortunately, being 'normal' isn't enough to protect you in the Death World that is Terraria.
- Badass Crew: They can all participate in combat, and can easily become this if enough are gathered in one place.
- Damsel in Distress/Distressed Dude: The Goblin Tinkerer, Stylist, Mechanic and Wizard are all initially found tied up in one place or another, and must be freed to be recruited.
- Dungeon Shop: They can live anywhere that isn't the Corruption or Crimson, as long as it fits the requirements for a house—including underground, producing this trope.
- Idle Animation: Are prone to these when the PC isn't interacting with them. This includes talking to and playing games with fellow NPCs and sitting on nearby chairs.
- Improbable Weapon User: Most of the NPC's whose functions aren't directly related to combat tend to be this. Examples include the Nurse and her needles, the Party Girl's Confetti Guns, and the Truffle's spores.
- Love Dodecahedron: The Nurse likes the Arms Dealer. The Arms Dealer reciprocates, but is also not above flirting with the Dryad and Mechanic, neither of which like him back. The Mechanic, meanwhile, has a mutual attraction with the Goblin Tinkerer, but neither of them is willing to voice it.
- Took a Level in Badass:
- A meta-example: prior to the 1.3 release, the NPCs were defenseless against enemies and reliant on the player to deal with any attackers. The 1.3 update armed them and made them ready to fight anything that invades the town.
- And more straightforwardly: once you reach Hardmode, some of the NPCs switch to more powerful weapons, and can utterly decimate even (pre-Hardmode) bosses without breaking a sweat.
The first NPC, who you start out with in every world. As befits his name he guides you with tips of varying levels of helpfulness, and if you show him any material item he can tell you what can be crafted from it.
- Badass Normal: The most "average" of the NPCs and besides having a vast amount of insight he's seemingly normal, yet can still hold a fight along with the rest of them when pushed enough times.
- Guide Dang It!: His purpose is to avert this for new players: if you give him a crafting material, he can tell you everything you can make with it, where it can be crafted, and the crafting recipe itself. He will also tell you the next possible objectives towards progression (at least until the later portions of Hardmode).
- The Generic Guy: Besides his knowledge, he's just a normal guy.
- The Scrappy: Invoked. He originally got hate from the beginning for appearing in every world, being unkillable, and subject to mass Artificial Stupidity. At this point he's somewhat become the Scrappy in-game, with other NPCs occasionally making comments about how much they're annoyed with his antics.
- Shaped Like Itself: As shown in the caption quote, one of the first tips you receive from the Guide is that there is a Guide, although he quickly realizes how redundant this information is.
- The Smart Guy: Both of the booksmart and Street Smart variety.
- Smug Super: See the caption quote. Now remember this is the same guy who holds every single bit of knowledge of the world of Terraria.
- The Straight and Arrow Path: Uses a simple Wooden Bow to defend himself if forced into combat. Come Hardmode, he upgrades to flaming arrows.
- Voodoo Doll: You can find his in the clutch of Demons flying about in the Underworld. Equipping it allows the player to attack the Guide even though NPCs are normally immune to player attacks, and tossing it into lava instantly kills him. However, a doll incinerated in the Underworld (whether tossed by a player or simply dropped by a killed Demon and not caught) will summon the Wall of Flesh.
As the player amasses more money, the Merchant will appear to relieve them of that burdensome cash. He sells mostly general use items, some potions, and spare tools in case the player loses theirs and lacks the materials to make more.
- Bunny-Ears Lawyer: Lies that he doesn't periodically sell junk and believes the moon is made out of cheese yet is essential early on, all the while keeping to his promise that his prices aren't high as they could be.
- Crutch Character: The wares he sells are useful in the early game, but by the time Hardmode comes around just about all of them have been surpassed in function or usefulness.
- Honest John's Dealership: Judging by his dialog. He's constantly trying to foist off items of dubious usefulness like "perfectly ventilated armor". Despite his claims of not being a junk dealer, he's tried to sell useless angel statues to other NPCs, and he sells dirt blocks for exorbitant prices on the international market.
- Knife Nut: If forced into combat, he will defend himself with throwing knives.
The nurse will move in once a player has found a heart crystal to expand their maximum health above the starting 100. For a price, she can restore the player back to full health in an instant, and remove any debuffs.
- All Periods Are PMS: All of the female characters get really nasty during a Blood Moon, which the devs have confirmed is a joking reference to periods. The Nurse is no exception, as her lines become various levels of bitchy, either accusing the player of being a hypochondriac or complaining that they dare to get injured.
- Amusing Injuries: Several of her lines has her casually mentioning re-attached body parts or other grievous wounds.
- Combat Medic: Will heal herself or other wounded NPCs after attacked, and when not helping her allies stay alive she'll be fighting off enemies with poisoned needles.
- Dr. Jerk: She tends to become a bit sarcastic, especially when the player wants her to heal them at high health. Approach her on the brink of death, and she'll quickly lose this attitude.
- Healing Shiv: She also throws needles at the NPCs to heal them, and will occasionally use them to heal herself. She throws poisoned needles at enemies instead.
- Hello, Nurse!
- Tsundere: The Nurse can come off as this: Some of her quotes suggest a Team Mom mentality, others that she only sticks around because you pay her.
- Turn Your Head and Cough: One of the random quotes when you talk to her, even if your character is female.
A dwarf who moves in after you find grenades/dynamite or craft sticky bombs and can sell you more of them and with many other explosive products.
- Ax-Crazy: This guy is a little too fond of explosive tumult.
- Grenade Spam: Defends himself through the use of Grenades.
- Leaning on the Fourth Wall: If you talk to him, he may ask you to sign a "Griefing Waiver".
- Our Dwarves Are All the Same: He has many of the stereotypical dwarf's traits. He is significantly shorter than other NPCs and has a beard. Furthermore, his mining helmet, lantern, and the fact that he sells Explosives fits the trope of dwarves preferring underground environments.
- The Rival: To the Arms Dealer.
- Stuff Blowing Up: His speciality.
- Your Answer to Everything: Got a problem, any problem? Easy — blow it up.
A trader and purveyor of dyes, who wears a colorful Arabian-styled outfit. He sells the Dye Vat, which allows the player to start making their own dyes from natural resources. If you bring him particularly exotic plants, he will trade them for special, magical dyes.
- Color-Coded Multiplayer: In a multiplayer server, he sells Team Dye that changes the color of the armor/clothing that it's applied to the respective color of the team if you are on one.
- The Fashionista: He's the most colorfully dressed, and all of his lines to the player are about dyes and/or appearance.
- Nice Hat: A deep purple turban that matches the front of his robes.
- Shout-Out: His line about rich mahogany is a reference to Anchorman.
- Sinister Scimitar: The weapon he uses to fight is explicitly called "Exotic Scimitar".
A centuries-old Nature Spirit, who will move in if you have defeated one of the regular pre-Hardmode bosses. She sells various natural items like acorns and seeds, and she can tell how corrupt the world has become (and will rebuke you for it).
- A Day in the Limelight: She becomes a playable character in Dungeon Defenders 2.
- All Periods Are PMS: During the blood moon but not as bad as the Nurse and Mechanic.
- Garden Garment: She's clad in naught but vines and leaves. Players can buy it during Halloween and wear it themselves.
- Green Thumb: Nearly everything she sells has something to do with growing vegetation or altering nature. When monsters are nearby, she'll cast a barrier of leaves that buffs up the defense nearby players and NPCs, increases their life regeneration, and gives them the Thorns ability. The more bosses you defeat, the more powerful the barrier gets against enemies.
- Ms. Fanservice: Not entirely visible in game, save for a risqué painting of her that can appear in the dungeon, but definitely in most fanart.
- Nice Girl: She's one of the kinder NPCs in the game (when it's not a Blood Moon), passionate about the wellbeing of her neighbors and the environment and one of the few people who is on good terms with the Truffle.
- Our Fairies Are Different: Being a dryad, she's a fey creature associated with plantlife and happens to be one of the few fairies in the game who has a humanoid shape.
- Really 700 Years Old: "I wish [Arms Dealer] would stop flirting with me. Doesn't he realize I'm 500 years old?"
- Shout-Out: "The sands of time are flowing, and you are not aging gracefully."
- Another reference is one of her possibles names being "Celestia".
- Stripperiffic: Those vines don't cover a lot of skin.
- Status Buff: When threatened, she will generate an aura that boosts all nearby Non Player Characters and players by increasing their defense and regen, while giving them a permanent Thorns effect. On enemies, however, the aura burns them for a small amount of Damage Over Time.
- Well-Intentioned Extremist: She encourages the player character to make the world a Crapsaccharine World by spreading the Hallow, although as of 1.3 she'll praise the player even more for completely purifying the world.
- You Gotta Have Blue Hair: Her hair is grass green and done up in a long, curling braid.
He moves in after you find a gun. He sells guns and bullets, and will also sell you illegal gun parts if you catch him at the right time.
- Arms Dealer: Of the Gun Shop Owner type. He can sell you illegal parts, however.
- Blood Knight: He loves the sheer amount of enemies he has the chance to kill during Blood Moons. After all, it's much more fun than trying to hold a conversation with his neighbors while the event lends most of them their own Jerkass Ball.
- Casanova Wannabe: He has a tendency to flirt with the ladies. The Dryad is sick of him doing so with her due to the massive age difference, the Mechanic already has a crush on the Goblin Tinkerer and is completely oblivious to his innuendo-laden jokes, and he may occasionally mention that he's preparing for a date with the Nurse or say that he's into what she's selling.
- Covert Pervert: If the Halloween event is any indication, he's not above having spare of the Nurse's clothes lying around and selling them.
- Double Entendre: He may mention that he "wants what the Nurse is selling" and the Mechanic may mention that he's asked her if he could press her pressure plates.
- The Gunslinger: Wields either a Flintlock Pistol pre-hardmode, or a Minishark post-hardmode.
- Kinetic Weapons Are Just Better: Notice how he only sells weapons and ammo that are kinetic?
- More Dakka: The guy loves his firearms. He also sells the infamous Minishark, which can then be upgraded into the extremely fast-firing Megashark.
- The Rival: To the Demolitionist.
- Shotguns Are Just Better: He sells them in hardmode.
- You Do NOT Want To Know: It's best he didn't answer HOW he made the Minishark, even stating this trope's name in a conversation with the player.
A new NPC introduced in 1.3.4, unique in that most of the items he sells can only be bought using Defender Medals. He sells the items required to summon the Old One's Army, as well as several weapons useful for completing the event.
- Global Currency Exception: You can use Terrarian cash to buy the two things you need to summon the Old One's Army, as well as ale, from him. Everything else in his inventory can only be bought with Defender Medals.
- Grievous Bottley Harm: Defends himself against monsters by throwing mugs of ale at them.
- Guest Fighter: Originally from Dungeon Defenders 2.
- His Name Really Is "Barkeep": One of his possible names is literally "Barkeep".
- Mr. Exposition: With regards to the Old One's Army.
He's a painter, dressed in a red cap and white overalls. He sells everything you need to paint your world and decorate your walls, as well as a number of decorative paintings, particularly landscapes. Many of the paintings and wallpapers he sells depend on location and the moon phase.
The only child NPC, who can first be found sleeping out on the ocean. He gives out rewards in exchange for finding special, rare fish.
- Bratty Half-Pint: He's possibly the most annoying character in the game. At times he even refers to the player as an errand boy.
- Conveniently an Orphan: He may occasionally mention that he's parentless, which partially justifies why he can be found in the middle of nowhere in the Crapsaccharine World that is this game.
- Infant Immortality: He can be hurt by monsters or traps like the other townsfolk, but instead of dying bloodily like the others, he vanishes in a puff of smoke with the message "[name] has left" when his health runs out.
- Jerkass: This kid has nary a redeeming feature. He's an egotist who actively pulls cruel pranks on his neighbors and views the player as nothing more than a personal slave.
- Knife Nut: Throws Frost Daggerfish to fight.
- Small Name, Big Ego: Everyone else in his eyes are his underlings, despite the fact that unlike him they're all adults with a myriad of useful skills and wares.
- Spoiled Brat: He frequently screams that he wants the daily quest fish immediately.
A new NPC introduced in 1.2.3 that is found inside a spider nest, bounded by webs and can be freed. She can change your hair style. She also sells various hair dyes.
- Ax-Crazy: Downplayed Trope as she's only this on blood moons. The other female NPCs only go as far as telling you not to bug them. This one? She will threaten to go Sweeney Todd on you with her styling tools if you don't leave her alone.
- All Periods Are PMS: During the Blood Moon, which the devs have confirmed is a joking reference to periods, she threatens you with her scissors and razor.
- Color-Coded Multiplayer: In multiplayer servers, she sells Team Hair Dye that makes the player's hair change colors depending on what team they're on.
- Diegetic Interface: Many of her hair dyes can be used as Dead Space-style indicators such as life, mana, depth, biome, team, time, etc.
- The Fashionista: She's all about the freshest hair styles, defends herself with Stylish Scissors and has got a nice dress and pair of high heels.
- Hairstyle Malfunction: Possibly. Upon her death, her head and hair split into two different chunks, unlike other long-haired NPCs. What little hair is attached to her head is a spiky, misshapen mess, and it might not all be that surprising given how she might complain of her hair being loaded with spider web when you rescue her.
- Shear Menace: Uses Stylish Scissors when forced to fight monsters.
- Serious Business: Bad hair days. She may mention a disastrous attempt to dye her hair using some of the Dye Trader's stock or comfort the player if they supposedly have an awful hair problem.
After the player repels the first Goblin Invasion, the Goblin Tinkerer can be found underground. He is an invaluable asset to any player, for he can reforge the player's items to make them more powerful; he also sells a couple of items that are extremely useful in the mid-game (Rocket Boots for flying, and the Tinkerer's Workshop for combining items).
- Expecting Someone Taller: Lampshaded.
- Grappling-Hook Pistol: Sold for 2 gold in case the Randomly Drops were unkind that you couldn't find an actual hook for one.
- Interspecies Romance: He and the Mechanic have a mutual crush on each other.
- Jetpack: Sells Rocket Boots for 5 gold, and combined with Hermes Boots at the workbench to make Spectre Boots.
- Lampshade Hanging: He hangs a lot of lampshades on the goblins such as the fact that they carry the spike balls they drop, the true direction they approach from due to the sun's left-to-right pattern (making West and East flipped), the fact that thieves don't even steal anything and that tattered cloth from their scouts can be used to start a war with them.
- Luck-Based Mission: Getting the right modifier for a weapon can cost immense amounts of time and money, especially if said item is incredibly expensive to buy/sell. But that Unreal Megashark is so tempting...
- My Species Doth Protest Too Much: If he's to be believed, most goblins are generally disagreeable, bumbling idiots. Not this guy; he's completely polite in his interactions with you and provides some useful tech. Naturally, he didn't really get along with the rest of his kind, and the reason you find him tied up in a cave is because the other goblins left him there.
- Our Goblins Are Different: He's quite adept at technology, selling you the tinkerer's workshop, necessary to combine accesories, and also sells spike balls that can be used as traps.
- Ship Tease: He's always asking about the mechanic.
- Shout-Out: His name is a reference to Warcraft III's Goblin Tinker.
- "Hey, does your hat need a motor? I think I have a motor that would fit exactly in that hat."
- "Yo, I heard you like rockets and running boots, so I put some rockets in your running boots."
- Spike Balls of Doom: Throws Spiky Balls in self-defense against monsters.
- Token Heroic Orc: The only goblin that isn't antagonistic.
- Will They or Won't They?: Toward the Mechanic.
The Witch Doctor moves in after defeating the Queen Bee. She/He sells the imbuing station and various tribal-themed accessories and items.
- Ambiguous Gender: None of the NPCs' conversations mention his gender at all and his mask obscures his facial features. The only way one can find out on their own is to mess around with King and Queen Statues; these statues can be used to teleport random NPCs of the corresponding gender.
- Blow Gun: His Weapon of Choice.
- Lizard Folk: Word of God has offhandedly said that the witch Doctor is a lihzahrd. More info
- Pungeon Master: Several of his lines involve wordplay.
- Witch Doctor: It's in the title, after all.
Formerly a slave of Skeletron who could be found wandering outside of the dungeon, he moves in once his master has been slain, selling clothes.
- Bad Powers, Good People: From 1.3 onward, he will fend off invading monsters by launching magical skulls at them.
- Back from the Dead: Summoning Skeletron undoubtably kills him, as the process of Skeletron emerging tears him apart from the inside out, but he appears later perfectly fine and with only very vague hints as to how he came back.
- Dark Is Not Evil: Going by his means of self-defense and the fact Skeletron bursts out of his corpse if you personally kill him at night, the Clothier still has some connection to Skeletron even without his curse. However, he's just another friendly NPC who never harms the player or the other NPCs on his own, and none the items he sells have any application in combat either.
- Demonic Possession: Considering he has Red Eyes, Take Warning before he's set free as well as the fact that Skeletron bursts out of him, it's heavily implied that this is the case with him.
- Earn Your Happy Ending: He's extremely grateful towards the player for freeing him from Skeletron's control.
- Ludicrous Gibs: He violently explodes into Skeletron if you ask him about the curse if he hasn't been freed yet.
- One-Winged Angel: If it's night time and he hasn't been freed, talking to him and agreeing to fight Skeletron will result in the beast bloodily ripping itself out of him and tossing his dismembered body aside to fight you. He can also do this after he's been freed when you kill him with the clothier voodoo doll, although considering all he's been through it makes the player look like more of a dick.
- Shout-Out: Nearly every line he says is a reference to a Tom Hanks movie.
- Spell Book: Uses the Book of Skulls to attack monsters. In hardmode, he begins using a special version that also inflicts the Shadowflame debuff on enemies.
- Video Game Cruelty Potential: If you want to obtain his hat, you need to get him killed, and if you want to challenge Skeletron again you need to kill him yourself while you are equipped with his voodoo doll at night.
- Voodoo Doll: Now dropped by Skeletons in the dungeon, in-case you aren't bothered to build an elaborate lava trap to get his hat. Killing him this way will summon Skeletron again if it's night.
Like the goblin, she's also bound, and found in the dungeon. She sells wires and wiring tools.
- All Periods Are PMS: During the blood moon.
- Blind Without 'Em: If you talk to her shortly after rescuing her, she may mention that she's dropped her contact lens and is desperately looking for it.
- Distressed Damsel: While he was still cursed the Clothier tied her up and tossed her into the dungeon, and the player has to save her before she moves in.
- Interspecies Romance: She's a human, and has a crush on the Goblin Tinkerer.
- Oblivious to Love: She doesn't understand the Arms Dealer's comments about "pushing her pressure plate". On the other hand, she appears to have a mutual crush on the Goblin Tinkerer.
- Ship Tease: She's always asking about the goblin tinkerer.
- Will They or Won't They?: Towards the Tinkerer.
- Wrench Wench: She even throws boomerang-like wrenches in self defense.
The party girl moves if you have at least 14 NPCs living in houses, with a 2.5% chance of doing so each day while the population remains at or above that number. She sells party supplies, including fireworks.
- All Periods Are PMS: She's the only female NPC that averts this during the Blood Moon.
- Genki Girl: Just like the pony she's based off, most of the thoughts running through her mind are about fun and parties.
- Improbable Weapon User: Uses Confetti Guns and Happy Grenades in self-defense.
- Joke Item: All of her items have no real significance for actual combat or other tasks but just there to, well, party.
- Lethal Joke Item: The Fireworks she sells in Hardmode can kill enemies and even bosses, and the Confetti she sells can be combined with empty casings from the Arms Dealer to make Confetti Ammunition, which is more powerful than all pre-Hard Mode ammunition.
- Rose-Haired Sweetie: She's cheerful and optimistic and loves parties, and she's the only female NPC who doesn't become rude or grouchy during a Blood Moon.
- Shout-Out: She is a very blatant shout out to Pinkie Pie, she has blue eyes, dark pink hair, a love for parties, etc. Two of her possible names are Sparkle and Trixy.
- Where the Hell Is Springfield?: According to her, the world of Terraria is somewhere on Earth - she mentions that she's been to Sweden.
Once the world is in hardmode, he can appear underground, bound. He sells the materials to make a variety of magical weapons.
- Accidental Misnaming: He frequently calls you by the names of other NPCs of your character's gender.
- Magic Librarian: He sells tomes that are used to craft the Crystal Storm, Cursed Flames, and Golden Shower spellbooks.
- Nice Guy: He tries to be friendly to the player, but if a couple of his possible conversations are any indicator then they aren't exactly working.
- Playing with Fire: Uses the Flower of Fire to fight.
- Robe and Wizard Hat: He's a wizard who wears a purple robe and pointed hat.
- Shout-Out: "Someone once told me 'friendship is magic'. That's ridiculous, you can't turn people into frogs with friendship!"
The Tax Collector moves in after you sprinkle a Tortured Soul, found in the Underworld in Hardmode, with Purification Powder. Every in-game minute (a second in real time), he will collect 50 copper from each NPC that is living in a house up to a limit of 10 gold.
- And I Must Scream: He's trapped in the underworld until you decide to free him.
- Cane Fu: Uses his Classy Cane to fight.
- Heel–Face Turn: He goes from a hostile monster down in the underworld to a recruit-able NPC if you have some purification powder handy.
- The Scrooge: He's based off of this, right down to the personality.
- Ungrateful Bastard: He's created by purifying his Tortured Soul. Anybody would think that would give him a more kinder demeanour in his new lease on life, but sadly, that is not the case.
- Then again, the taxes he collects go straight to you, so he's not entirely ungrateful. He also has a few lines where he isn't so sour about giving you his money.
- Because he's immediately changed into a new character when you purify him and only has his standard dialogue (same as he uses when he's in your town), he can't even acknowledge that you just saved him. (This is unlike other NPCs that you save such as the Mechanic and the Goblin Tinkerer, who do have appropriate lines for thanking you.)
The Truffle will only move into a house within a surface mushroom biome during hardmode and cannot be moved anywhere outside of it. He sells mushroom stuff.
- Blade on a Stick: He sells Mushroom Spears.
- Drone Deployer: Of a sort. He creates explosive spores that hover in the air when threatened.
- The Friend Nobody Likes: He's at odds with everyone but the Dryad. The Clothier and the Witch Doctor have even gone as far as to try eating him.
- Mushroom Man: All of his possible names are kinds of mushrooms or toadstools to boot, too. He'll also release spores as a means to attack enemies.
- Shout-Out: He doesn't know the "Truffle Shuffle", so stop asking.
- What the Hell, Player?: He calls you out for "stealing his children."
The pirate moves in after defeating the Pirate Invasion and sells cannons primarily, and some other things.
- Cool Gun: A minigun with a cannon strapped to it. Extremely effective for self defense.
- Defeat Equals Friendship: He looks and fights exactly like the Pirate Captain enemy, which may imply he elected to join the winning side after you trounced his invasion.
- Pirate Parrot: Which you can buy as a pet, but it requires him in the ocean and costs two platinum coins. The Cyborg also implies the Pirate has one of his own after exclaiming how corrosive its droppings are to him.
- Talk Like a Pirate: His manner of speaking.
The Steampunker moves in if you have beaten at least one hardmode boss. She sells a variety of high-tech, Steam Punk gizmos.
- All Periods Are PMS: During a Blood Moon. Notably, she only has one Blood Moon-exclusive quote warning the player that she's feeling peevish; aside from that, her dialogue is the same as always.
- Cool Gun: Wields a Clockwork Assault Rifle to defend herself.
- Sky Pirates: She may mention that she's beginning to consider becoming one.
- Steam Punk: It's in her title, and she sells a lot of industrial-looking gadgets.
- Wrench Wench: This girl is extremely tech savvy, building and selling some of the most high end machinery in the game like jetpacks and teleporters. She occasionally expresses curiosity about the workings of the Cyborg.
The cyborg will move in once you have defeated Plantera and collected a rocket launcher. He sells rockets.
- Ambidextrous Sprite: Either his optical enhancement is more like goggles for both eyes or they can swap between eyes based on how the eye that's shown is always covered.
- Arm Cannon: Uses one that can either fire Missiles or Proximity Mines to defend himself.
- Expo Speak Gag: "My expedition efficiency was critically reduced when a projectile impacted my locomotive actuator."
- Grenade Launcher: Or a Proximity Mine Launcher to be exact.
- Logic Bomb: Completely unaffected. In-fact, he makes a joke of it.
- Stuff Blowing Up: Many of his items involve explosions, excluding the nanites.
He will only move in if 1: It's around December 15th to 31st and 2: If you summon, and defeat the Frost Legion. He sells a variety of Christmas-themed decorative items, including christmas trees and trimmings.
An NPC introduced in 1.2.3 that has a random chance of spawning every day once the player has at least two NPCs moved in and no other daytime events are occurring (goblin invasion, pirate invasion, eclipse). Unlike other NPCs, he does not move into a home and instead wanders around near where your home is. He carries a random list of goods each time he appears.
- Badass Cape: He can sell one of four possible vanity capes.
- Booze-Based Buff: Sake sometimes shows up which grants the tipsy (de)buff for twice as long as ale.
- Energy Bow: After defeating Plantera, one of the possible items that can be purchased is the Pulse Bow. He also uses it to shoot down enemies.
- Katanas Are Just Better: One of the possible items that can be bought.
- Killer Yo-Yo: Has a random chance of selling One Drop's Code 1 yo-yo or the Code 2 when in hardmode, he can also sell two of the counterweights that the Skeleton Merchant does not.
- Revolvers Are Just Better: A possible item he can sell after a Shadow Orb or Crimson Heart has been smashed.
- The Gunslinger: Attacks enemies with his Revolver when threatened pre-hardmode.
- Nice Hat: Wears a blue hat with a feather in it, which he sometimes drops when killed.
- The Straight and Arrow Path: When Hardmode comes along, he switches out his Revolver for a Pulse Bow to attack enemies with.
Introduced in 1.3, the Skeleton Merchant has a random chance of spawning underground. Like the Traveling Merchant, he will not move into a home and will wander around the caverns. He carries a list of goods dependent on current time and moonphase.
- Ballistic Bone: He throws bones at enemies when threatened.
- Cruel and Unusual Death: One of his lines implies that he died by being caught by underground spiders, and they feasted on him until there was nothing left except bones. Oh, and he remembers it completely.
- Dem Bones: He's a skeleton, albeit a friendly one.
- Glove Slap: During a Hardmode Blood Moon, he carries a glove on a stick, while its damage and critical chance is mediocre at best, it has the single highest base knockback of any weapon beyond the Breaker Blade and is great for repelling enemies not entirely immune to knockback.
- Killer Yo-Yo: He can sell the various yo-yo Counterweights that send out a tiny, orbiting counterweight upon attacking an enemy and during Hardmode, he not only can sell two unique yo-yos but also the Yoyo Glove that allows the equivalent of Dual Wielding two of the same yo-yo at once.
- Nice Hat: Wears a large black hat.
- Shout-Out: Several of his names are shout outs to other skeleton or advertiser characters.
Critters spawn in certain environments and are completely harmless and all of them can be caught using the bug net sold by the Merchant and put into bottles or Terrariums. These include birds, cardinals, blue jays, ducks, mallards, bunnies, squirrels, fireflies, butterflies, goldfish, worms, grasshoppers, mice, snails, scorpions, black scorpions, penguins, frogs, lightning bugs, glowing snails and truffle worms. The truffle worm is used for summoning Duke Fishron.
- Animalistic Abomination: The Corrupted forms of penguins, goldfish, and bunnies. Considering that the Corruption has a reputation for spawning minor Eldritch Abominations, this comes part and parcel. Their crimtane versions in Crimson worlds are even worse.
- Bunnies for Cuteness: Bunnies spawn at random and you can even catch one to put into a terrarium to keep. Although they become less cute during Blood Moons.
- Everything's Better with Penguins: In the snow biome, unless it's a Blood Moon then you should run...
- Gold Makes Everything Shiny: 1.3 brought about gold versions of all critters, which are very rare and worth 10 gold coins each. If they're bait critters then they have 50% bait power.
- Metal Slime: Truffle worms, they burrow away the moment you get too close and spawn rarely. 1.3 introduces gold variants of various critters.
- Number of the Beast: The Truffle Worm's bait power is 666%.
- One-Hit-Point Wonder: Although they actually have 5 HP, they have zero defence and literally any attack will instantly kill them unless it was a weak starting weapon such as the Wooden Hammer.
- Tailfin Walking: When it rains, goldfish shuffle about on land on their tails.
With the right equipment, Players can summon several different minions to aid them in combat. They are crucial to the Summoner class set up, and a small yet helpful addition to the others. All of them are summoned from magic staffs.
- Anti-Frustration Features: Zigzagged. If the player is separated from the minions and moves too far away from them, they will spawn/fly over to the players location. . . Most of the time. If the minions in question can't pass through walls and are still on screen, they won't be able to get beside the player unless they are re-summoned.
- Arbitrary Headcount Limit: Without certain gear or buffs, a player can only have one minion active at a time. The highest cap is 11 on computer, and 9 on mobile and console versions. Some armor sets meant for summoning minions will grant an increase in minion damage rather than an increase in the minion cap.
- Evil Counterpart: Inverted. Most of the minions are loyal ally versions of enemies the players fight, and likely encounter first. On a more meta level, the Minions were not originally in the game when it first came out, and started being added in later updates.
- Friendly Fireproof: The Minions attacks cannot hurt the player, and the players attacks cannot hurt the minions.
- Gameplay Ally Immortality: None of the minions can take damage or die, but will de-spawn if dismissed, or the player dies.
- Leeroy Jenkins: They will rush off to fight any enemies they can get to, regardless of wether or not the player is actually fighting them.
- Loyal Animal Companion: All of them are loyal minions for whomever summons them, though only a handful of them are actual animals.
- Summon Magic: All of the minions are summoned from magic staffs. The minions damage is based on the stats of the equipment used to summon them.
- You and What Army?: The achievement for having nine minions at once is called this.
The easiest though time consuming minion to get, the baby slime is summoned from the Slime Staff, which is a Rare Random Drop from slimes. It is one of the three pre-hard mode minions.
- Black Bead Eyes: Has these.
- Blob Monster: A tiny slime.
- Blush Stickers: Has these to make it look cuter and younger.
- Death of a Thousand Cuts: As the weakest minion, fighting just about anything stronger than a zombie goes like this.
- Evil Counterpart: Inverted. The first slimes encountered by players are enemies, while baby slimes are loyal to the player who summons them.
- Infant Immortality: Is a baby slime, that like other minions cannot die.
- Rare Random Drop: The Slime staff that summons it has the lowest drop rate of any item dropped by an enemy. In normal mode, The lowest drop rate is 1/10000 (0.01%), while it's "best" drop rate is marginally better, at 1/100 (1%), but the latter only applies to Pinky. By the time a player obtains one, they probably have the means to get the Hornet staff, or even the Imp staff instead, making the Slime staff and the Baby slime by extension more of a Bragging Rights Reward.
- Ridiculously Cute Critter: Is tiny, with Blush Stickers, beady little eyes,and a pacifier.
One of the three pre-hard mode minions. A hornet that is summoned from the Hornet Staff, which requires materials dropped by the Queen Bee to craft.
- Bee Afraid: Hornets actually, but close enough to fit when lots of them are summoned.
- Beware My Stinger Tail: The hornets method of attack is firing poisonous stingers.
- Big Creepy-Crawlies: Is a hornet almost as big as the PC.
- Evil Counterpart: Inverted. The first Hornets the players encounter are enemies, while the summoned ones are loyal to the player who summons them.
- Loyal Animal Companion: A large Hornet minion loyal to the player who summons it.
- Standard Status Effect: It's stingers can inflict the "Poisoned" debuff on enemies.
The strongest, and last minion pre-hard mode. Summoned from an Imp Staff the player must craft from hellstone bars at an anvil.
- Evil Counterpart: Inverted. The first imps encountered by the players are enemies, while the summoned ones are loyal to the player who summons them.
- Good Wings, Evil Wings: They have bat like/devil wings on their backs which they use to fly, but they only attack their summoners enemies.
- Playing with Fire: Attacks enemies with fire balls.
- Reality Ensues: Water puts out their fireballs on contact.
- Secret A.I. Moves: Played with. Enemy Imps have the ability to teleport, but player summoned Imps lack this ability. Instead, player summoned Imps have wings and can fly, an ability enemy Imps lack.
- Sequence Breaking: Meant to be the last minion players get pre-hard mode, but since the staff is the only thing a Summoner player really needs from the Underworld pre-hard mode, they can use the Reaver Shark (a rare drop from fishing in the ocean) to collect only enough materials for the staff, go back to home base, and have an Imp be the first minion they get, rendering the Slime and Hornet Staffs obsolete.
- Standard Status Effect: It's fireballs inflict the "On fire!" Debuff on enemies.
- Useless Useful Spell: Is the best pre-hard mode minion- unless water is involved. Its fireballs are extinguished the moment they come in contact with water, making Imps useless for underwater combat.
The weakest Hardmode minions, but the easiest to obtain, Spiders are summoned from the Spider staff, which is crafted from 16 spider fangs at an iron/lead anvil and above.
- Big Creepy-Crawlies: Spiders that are about as big as the player characters head.
- Loyal Animal Companion:Is a Spider that is loyal to the player who summons it.
- Palette Swap: Has three possible sprites with minor differences.
- Wall Crawl: Spiders can climb background walls.
- Spider Swarm: Invoked if the player summons more than one.
- Standard Status Effect: Inflicts the "Venom"note debuff on enemies.
Smaller versions of The Twins in their second form, called Spazmamini and Retinamini, respectively, are summoned from the Optic staff, which requires souls of sight obtained from defeating The Twins as one of the crafting materials.
- Eye Beams: Retinamini fires these.
- One Steve Limit: Downplayed. To lessen confusion between these minions and The Twins, they are just referred to by the Optic staff as "Twins".More
- Short-Range Guy, Long-Range Guy: Like The Twins. Retinamini fires Eyebeams, while Spazmamini charges enemies.
- Zerg Rush: Both do 30 base damage (only 4 more than a Spider), but each pair of Retinamini and Spazmamini count as one minion, meaning that a fully geared and buffed player can have 18 or 22 at once, depending on what version they are playing.
Small Pirate minions summoned by the Pirate staff, a Rare Random Drop from enemies in the Pirate Invasion event.
- Dressed to Plunder: There are three different sprites for the Pirates:
- Palette Swap: Has three possible sprites with minor differences.
- Pirate: Tiny pirates.
- Pirate Parrot: If they are too far away from the player, a Parrot will carry the Pirate to them.
- Shout-Out: To Pixel Piracy, a game Re-Logic published.
- Toilet Humor: Occasionally the Pirates will poop. This has no functional purpose.
Pygmy minions that are summoned from the Pygmy Staff, which is one of the items Plantera might drop upon defeat.
- Blade on a Stick: They fight with throwing spears.
- Guide Dang It!: The Pygmy Staff must be in the players inventory when talking with the Witch Doctor in order to buy the Tiki armor, Pygmy Necklace, and Hercules beetle.
- Palette Swap: Has four possible sprites with minor differences, mainly the colours on their faces. They are: Blue, red, yellow/orange, and purple.
- Shout-Out: The four different Pygmy sprites have colours on their faces that match up with the masks worn by the Ninja Turtles.
A small flying saucer minion summoned by the Xeno Staff, which is one of the possible drops from the Martian Saucer during the Martian Madness event. It is currently only in the desktop version.
Ravens that are summoned from the Raven Staff, a rare drop from the Pumpking during the Pumpkin moon event.
Sharknados(small tornados that fire sharks) summoned from the Tempest Staff dropped by Duke Fishron.
A minion summoned with the Deadly Sphere Staff which is a rare drop from Deadly Spheres during the Solar Eclipse event. It is currently exclusive to the Desktop version.
A dragon summoned from the Stardust Dragon Staff, which is crafted from 18 Stardust fragments. Instead of summoning more dragons, each use of the Stardust Dragon Staff will increase its length and damage. It is currently exclusive to the Desktop version.
- Evil Counterpart: Inverted. The Stardust Dragon operates like a player friendly version of a Wyvern.
- Energy Being: It's less of a Dragon and more of a Dragon-shaped mass of eldritch energy.
- Infinity -1 Sword /Infinity +1 Sword: A single summon Stardust Dragon has a base attack of 40 while the Stardust Cell does 60. So, a single Stardust Dragon at maximum length is the strongest minion, while a one summon Stardust Dragon is the second best individual minionnote .
- Lightning Bruiser: When it's on the attack, it moves faster than the player.
- One-Man Army: Invoked. The Stardust Dragon at full power tears enemies, both mooks and bosses alike, to shreds.
- Our Dragons Are Different: Has no legs, no wings, attacks enemies by flying through them instead of using some kind of Breath Weapon, is blue and yellow, and looks more like a flying sea serpent.
- Power Floats: How it flies, gliding effortlessly around.
- Power Glows: As it moves, it leaves behind a small trail of blue sparkles that provide some temporary light.
- Ramming Always Works: Despite being a dragon, it has more in common with the Wyvern than Betsy, as it will instead charge and ram into and through it's targets. Although it doesn't make it any less lethal.
- "Cultivate the most beautiful cellular infection"
- Damage Over Time: The Stardust Cell fires "mini cells" that latch onto enemies and damage them for 30 "ticks".
- Flash Step: Will do this to get closer to enemies out of range.
- Homing Projectile: Its mini cells.
- Infinity -1 Sword /Infinity +1 Sword: Is the strongest individual minion due to its base damage of 60, while the Stardust Dragon has a base damage of 40, but will increase in attack power and length with each use of the Stardust Dragon Staff making it stronger than the Stardust Cell. Unlike the Stardust Dragon, multiple Stardust Cells can be summoned.
- Power Floats: Stardust Cells float around.
King Slime is a Giant Slime with a crown. It is a side boss that can be fought at any time but doesn't count for progression of the first act of Pre-Hardmode.
- And Your Reward Is Clothes: You beat it? Enjoy your random part(s) of the ninja costume and possibly the boss mask. Not so bad since 1.2.4 as it now drops the Slime Hook, the Slime Gun and a Slimy Saddle that you can get a Slime mount. Then 1.3 improves the drops even more by making the Ninja costume into functional armor that improves Throwing weapons.
- Asteroids Monster: It will eschew normal slimes from itself as it takes damage.
- Cool Crown: Now wears one after the 1.3 update, making it look very similar to King Slime from Dragon Quest.
- Flunky Boss: Spawns blue slimes as it takes damage. On Expert, it can also spawn spiked blue slimes.
- King Mook: Basically a bigger, stronger version of the blue Slime. After the 1.3 update he even has a crown, and also appears as the boss of a Slime Rain.
- Shout-Out: To Ninja Gaiden with the ninja floating inside it, being a reference to a boss of the same one you fight.
- Shows Damage: It gets smaller as its health gets lower. Justified as it starts losing mass as it takes damage, as shown by the blue slimes it releases when taking enough damage.
- Skippable Boss: It's entirely possible to never fight this boss. The triggering events are avoidable and it isn't tied to game progression.
- Spike Shooter: Not King Slime itself, but the Spiked Blue Slimes it spawns on Expert can fire spikes at the player.
- Teleportation: Will now dissolve and reform on the player if it happens to get stuck or manages to escape it for a while, so it cannot be trapped or outran anymore.
- Time-Limit Boss: One of the very few bosses in the game that doesn't do this.
The Eye of Cthulhu
Cthulhu's disembodied eyeball. It's very likely to be the first boss fought, unless players set sight on the weaker King Slime first.
- The Berserker: Adopts this strategy as it's Expert Mode-exclusive Desperation Attack.
- Early-Bird Boss: After the player has satisfied a few relatively easy-to-meet conditions, the Eye of Cthulhu may simply decide to show up one night and start attacking, even if it hasn't been summoned. While it's still within reason to defeat it, it's also just as likely that the player lacks the equipment or skill necessary to fend it off.
- Eldritch Abomination: Well, at least the eye of one.
- Flunky Boss: For the first phase, it shoots weaker and smaller Demon Eyes called Servants of Cthulhu at you.
- Giant Eye of Doom: The first major Lovecraftian horror most players with find themselves against, and once it loses enough health it ditches its iris for a horrifying and toothy mouth. With its speedy charge, it can easily outmatch an unprepared player.
- Time-Limit Boss: It will run away if you do not defeat it by dawn.
- Turns Red: Once at half health, it spins in a circle, releasing a small swarm of Demon Eyes and gaining a giant mouth where its iris was. In this state, it no longer shoots Demon Eyes but charges more aggressively. The 1.3 Big Update adds a new attack to the Eye's arsenal in Expert Mode, granting it a powerful and even faster berserker charge that it uses in proportion to how much damage it's taken.
- Wake-Up Call Boss: For those who faced the King Slime earlier than anticipated.
- It also serves this role in Expert Mode, demonstrating that bosses have become much stronger than they were in normal mode. Its movement is upgraded to nearly match The Twins' ability to track the player's position, it releases a large swarm of lesser eyes transitioning into its second phase, and the new Desperation Attack it uses makes it extremely difficult for early-game characters to both hit and dodge the Eye of Cthulhu when it's on its last legs.
The Eater of Worlds
A giant-sized Devourer. It typically takes the Brain of Cthulhu's place as the second major boss in worlds afflicted with the Corruption.
- Asteroids Monster: If you destroy a segment that would leave two intact segments ahead or behind it, the detached segments will become a separate worm that must also be destroyed. At a bare minimum, you have to kill at least half of the Eater of Worlds to kill it permanently.
- Eldritch Abomination: A gigantic mutant worm with eyes all around it's body that heralds from the Corruption.
- Sand Worm: Well, Corruption Worm. Plays this straight if summoned in a Corrupted desert.
- Super Spit: The Expert Mode version of the Eater of Worlds possesses the ability to shoot Vile Spit like a Corruptor on LSD.
- Segmented Serpent: Each of its segments is its own entity with its own health bar, and are capable of acting as independent worms so long as two segments are connected.
- Skippable Boss: If you can fish up the Reaver Shark, you can skip the Eater of Worlds. It'll be a bit harder to mine Hellstone with inferior armor, but not insurmountable (unless you farm Eater of Souls instead for the Ancient variety of Shadow Armor).
Brain of Cthulhu
Cthulhu's brain. It typically takes the Eater of World's place as the second major boss in worlds afflicted with the Crimson.
- Bizarre Alien Biology: It has a heart inside of it. With an eye on it.
- Brain Monster: A giant, monstrous brain which attacks you in the Crimson should you smash too many Crimson hearts or use a bloody spine to summon it.
- Doppelgänger Spin: On Expert, during the second half of the fight. Each time it teleports, it produces three translucent, harmless fake images of itself that also converge on you. As its health gets lower, these images become less transparent, making it harder to distinguish the real one.
- Eldritch Abomination: Again, at least the brain of one.
- Flunky Boss: Much like the Eye of Cthulhu, it summons eyeball-like minions to attack you. Unlike the Eye of Cthulhu, these must be destroyed if you want to hurt the Brain itself.
- Skippable Boss: If you can fish up the Reaver Shark, you can skip the Brain of Cthulhu. It'll be certainly a bit harder to mine Hellstone with inferior armor, but not insurmountable.
- Standard Status Effects: On Expert, any Collision Damage with the eyeballs or the Brain can cause the Confused, Poison, Bleeding, Darkness, Broken Armor, or Weak status effects.
- Suspiciously Similar Substitute: Due to being a floating brain-like enemy that attacks you with eyeball-like minions, the Brain of Cthulhu is possibly the closest thing the PC version has to Ocram.
- Teleport Spam: In the second half of the fight.
A giant queen bee. Her larvae spawn inside bee hives and can be fought if broken. She's a sideboss and can be fought at any time although again like the King Slime, she doesn't count towards progression of Pre-Hardmode.
- Bee Afraid: You stumble into a hive, with not many monsters inside unless you start digging into the walls. Then you attack the larva... and a gigantic bee attacks you furiously in retaliation.
- Bee Bee Gun: Can send out smaller bees to attack you.
- Beware My Stinger Tail: Like the Hornets, she can fire out venomous stingers that poison the player.
- Big Creepy-Crawlies: The largest insectoid enemy in the gamenote .
- Berserk Button: Killing the Bee Larva in any of the bee hives will summon her.
- Boss Arena Recovery: Due to how the Queen Bee is summoned, you'll probably be fighting her inside a beehive, the bottom of which is lined with honey that you can take a dip in to recover health over time.
- Flunky Boss: One of her attacks is to release a swarm of tiny bees that follow you relentlessly.
- Glass Cannon: The bees she spawns have very little health, but they pack quite a wallop.
- King Mook: A Queen Mook towards the Hornet enemies.
- Mama Bear: Kill her larva and she'll awaken and attack you in retaliation.
- Ramming Always Works: One of her attacks. She's able to fire out bees and stingers, but will also charge the player.
- Skippable Boss: Like the King Slime, there's no particular need to fight the Queen Bee unless you want her loot.
- Spam Attack: In Expert, her attacks get faster she nears death. This can lead to her chaining up charge attacks, or releasing swarms of bees followed by machine gun-like stinger barrages.
- Standard Status Effects: Can poison you with her stingers.
- Time-Limit Boss: Averted.
- Turns Red: Only on Expert. Her attack pattern gets faster and more frequent as she loses health. In addition, her defense gradually increases as she takes damage on Expert, culminating in more than double her defense at critical health.
A giant floating skull and arms that is summoned by talking to the old man at the entrance of a dungeon at night.
- Cognizant Limbs: Both his hands. It's recommended to destroy them first, as they are his main means of attack. It's almost required to kill them first in Expert, because his head will have 100 defense until you do.
- Cycle of Hurting: On Expert, his spinning move upgrades once both arms are destroyed, becoming faster so he can stick to your character for continuous, huge Collision Damage.
- Dem Bones: It's a floating skull with disembodied skeletal arms.
- Dungeon Bypass: Very strongly averted. Try to tunnel past Skeletron and you'll be killed by the Dungeon Guardian, a Nigh Invulnerable Beef Gate meant to punish such an attempted bypass. Even if you decide not to enter the dungeon at all, he is still required to be defeated if you want the cultists to appear and trigger the Lunar Events.
- Everything's Better with Spinning: For the player, anyway. His defense drops when his head is spinning.
- Homing Projectile: In Expert, he fires homing skulls a la the Book of Skulls once you've destroyed one of his hands.
- Time-Limit Boss: It will kill you if you do not defeat it by dawn.
- Turns Red: At dawn, it transforms into the Dungeon Guardian and will One-Hit Kill you. In Expert, once his hands are destroyed, he begins firing skulls at the player while also upgrading his spinning attack to perform a Cycle of Hurting.
A special version of Skeletron meant to keep you out of the dungeon until you've defeated Skeletron proper, introduced to fix a loophole in which the Skeletron Heads that once held its role in earlier versions could accidentally grant access to the dungeon if killed. Delving too deep (below 0 depth, specifically) will summon this nigh-invincible horror, and thusly, your doom.
- Beef Gate: It's intended to keep you out of the dungeon until you've earned it by defeating Skeletron. If you descend below 0 depth, it spawns. Unlike most Beef Gates, however, this one will keep spawning if you try to enter the dungeon, no matter how many times you kill it.
- Bragging Rights Reward: The Bone Key it drops when killed, which summons a mini-Skeletron pet.
- Dem Bones: A flying skull.
- Doppelgänger Attack: The game treats it as a normal enemy, not a boss, so it is possible for more than one to spawn. It's not uncommon for two to chase you out of the dungeon. Death is pretty much assured when this happens.
- Everything's Better with Spinning: Constantly in this state.
- Implacable Man: It can phase through structures and the ground so walling it up is a no-go, it will chase you across the map and won't stop coming until either it despawns (which barring an endgame mount fast enough to outpace the creature would require an absolute miracle), it hunts down and kills you, or you manage to kill it. It's immune to knockback and will shrug off everything up to and including the most powerful weapons in the game without slowing down one bit. Your only advantage over it in the end is agility.
- The Juggernaut: Doesn't stop homing in on you, takes Scratch Damage from everything, One Hit Kills you, and is practically invulnerable to knockback.
- Lightning Bruiser: It can fly faster than anything short of the best mount in the game, and can One-Hit Kill an endgame melee tank build on contact.
- Marathon Boss: You have to run away from it dealing Scratch Damage until its health depletes, which can take quite a long time. The absolute fastest you can kill the Guardian is in about five minutes, with the right equipment, and that's on Normal mode.
- Nigh Invulnerable: It has 9999 HP (which is doubled in Expert Mode) and 9999 Defense (turning all attacks into Scratch Damage), and is Immune to Flinching. It can be killed, but only with a lot of preparation.
- One-Hit Kill: Its sole purpose of existence. With an attack that deals 1000 damage, if it catches you, you're dead.
- Permanently Missable Content: Vanishes once Skeletron is defeated, so get your Bone Key before you open the dungeon.
- Ramming Always Works: It will crash into you at high speed and make you explode into gibs on impact.
- Rasputinian Death: Pretty much required to kill it. In fact, it's likely that the reason why it blinks out of existence when it finally kicks the bucket is because in the process of killing it you have to grind up the creature until nothing remains.
- Self-Imposed Challenge: Killing it is considered a personal achievement by Terraria veterans. The devs have acknowledged this, and it now drops the aforementioned Bone Key as a reward.
Wall of Flesh
The final Pre-Hardmode boss, the Wall of Flesh is summoned by tossing a guide voodoo doll into lava in the underworld.
- Advancing Boss of Doom: It will charge at you and pursue you from one end of the world to another, there is no way to get past it, and if it is still alive by the time it is on the other end, it will crush you to death.
- Beef Gate: The Wall of Flesh will easily kill the under-prepared, to prevent them from unleashing hardmode prematurely.
- Disc-One Final Boss: The most powerful pre-hardmode boss you face before you go into hardmode.
- Eye Beams: It fires volleys of purple lasers at you from its eyes, and the time between shots decreases as its health gets lower until it's full-on Beam Spam.
- Eldritch Abomination: Moreso than the other pre-hardmode bosses because it can inflict a Mind Rape on you that forces you to kill it to survive. According to a card, it's the lord of eternal nightmares.
- Flunky Boss: This game loves these bosses a lot. The Wall of Flesh has a number of flunkies called The Hungry attacked to it which reach out to damage you before detaching and flying at you upon death. It can also summon burrowing Leeches.
- Go for the Eye: While both its mouth and eyes are vulnerable, the eyes have zero defence and thus do not benefit from any Damage Reduction, making them the preferred targets.
- Living Structure Monster: The Wall of Flesh is Exactly What It Says on the Tin — a massive, moving wall of meat with eyes and a mouth.
- Load-Bearing Boss: Its death infects the world with large swathes of ever-expanding Hallow and Corruption.
- Marathon Boss: Clocks in at 8000 HP in normal mode, which is considerably higher than any other easymode boss. Even top-tier easymode weapons will take a while whittling this guy down.
- Nintendo Hard: Either you're over-prepared or you die. There is no middle ground.
- Time-Limit Boss: You have to defeat it before it reaches the other side of the world and kills you.
- Turns Red: As you wear down its health, it will start gaining speed, belch up leeches more often and will shoot its Eye Beams more often. On Expert, he gains a massive burst of speed when at critical health.
- You Will Not Evade Me: The wall will use its tongue to reel you in if you run to far from it, get behind it or try to escape the underworld conventionally. Trying to use the magic mirror to escape splatters you when you reach your spawn. This isn't as bad as it sounds for soft-core or even medium-core characters as your money/items drop at the spawn/bed that you warped to. Hard-core however...this happens.
A mechanical version of the Eye of Cthulhu, except there are two of them, Retinazer and Spazmatism.
- Breath Weapon: Spazmatism will spew a constant stream of Cursed Flames in its second phase, though at least the range is limited.
- Beam Spam: The lower Retinazer's health is in the second phase, the more it does so. At critical health it can fire as fast as a Megashark.
- Degraded Boss: In a rare beneficial version! Players can craft an staff that lets them summon miniature stage two Twins to aid them in battle and they keep their signature breath and laser attacks. A properly geared player can have a pack of 22 of these things trailing behind them.
- Dual Boss: The only one in the game.
- Eye Beams: Retinazer, Retinazer, Retinazer. It gets worse the lowers its health gets.
- Giant Eye of Doom: Two of them this time.
- Hellfire: Used by Spazmatism.
- Mechanical Abomination: The mechanical reincarnation of the Eye Of Cthulhu.
- Robotic Reveal: Unlike the other mechanical bosses, these two appear to be biological until they enter their second phases.
- Short-Range Guy, Long-Range Guy: Apparent in their second forms—Spazmatism is the Short Range, attempting to stay close to breathe cursed flames and charge the player, while Retinazer is the Long Range, attempting to stay far while firing lasers at the player.
- Technicolor Eyes: Retinazer's iris is red, and Spazmatism's is green, appropriate for the latter since it spews green fire. Both have blue pupils.
- Time-Limit Boss: The two will run away at dawn.
- Turns Red: Their second forms, but Retinazer has a particularly noteworthy one; the lower its health gets during its second phase, the faster it fires the laser cannon, until it's essentially Beam Spam.
A mechanical version of the Eater of Worlds.
- Animal Mecha: A giant metal worm.
- Attack Drone: Sends these out.
- Beam Spam: Both its sections and probes can do this from time to time.
- Boss Arena Recovery: Destroying the probes it sends out will get at least one heart and/or a mana star if you've been using magic weapons.
- Damage-Sponge Boss: Has more HP than any other non-composite entity opponent in the entire game, but since all of its segments are individual targets vulnerable to attack, piercing and melee weapons will rack up massive amounts of damage by striking multiple segments on each pass, balancing out the extra health.
- Flunky Boss: The probes it sends out upon being hurt.
- Frickin' Laser Beams: The aformentioned probes will start letting out a barrage of lasers should they be allowed to survive for a bit.
- Mechanical Abomination: The mechanised reincarnation of the Eater of Worlds.
- Segmented Serpent: Good christ, with hundreds of segments this thing is massive. The player can attack multiple segments at one go, allowing them to deplete its massive HP faster. If someone has already defeated The Twins and has used their souls of sight to build a Magical Harpnote weapon, the boss fight becomes nearly effortless.
- Time-Limit Boss: Runs away at dawn.
The mechanical version of Skeletron.
- Chainsaw Good: The Prime Saw arm.
- Cognizant Limbs: Has four destructible limbs, each carrying a deadly weapon of its own.
- Crippling Overspecialization: The Prime Cannon arm fires bombs which explode on contact with solid platforms. This means that a floating arena of wooden platforms makes the arm utterly incapable of causing anything other than Collision Damage.
- Dem Bones: Mechanical ones this time.
- Everything's Better with Spinning: Unlike Skeletron, Prime benefits from spinning as its defense actually increases instead of decreasing when it does so.
- Frickin' Laser Beams: The Prime Laser arm.
- Jet Pack: While the head floats, Skeletron Prime's arms seem to move using jets of (harmless) flame.
- Marathon Boss: With its four arms and high HP, Prime can easily drag the fight out until morning if the player's damage output is too low, and unlike the Destroyer, it isn't made up of hundreds of segments that can all be targeted.
- Multi-Armed and Dangerous: Has four arms as compared to Skeletron's two, and each arm has a different weapon to murder you with on each end.
- Power Pincers: The Prime Vice arm.
- Skele Bot 9000: It's a mechanical skull with four arms.
- Spikes of Doom: The head grows these when spinning.
- Throw Down the Bomblet: The Prime Cannon arm.
- Time-Limit Boss: Like Skeletron, Prime has a Dungeon Guardian form and will kill you at dawn.
The true final boss of the console version, Ocram can best be described as a flying Predator head.
- Beam Spam: Its first form loves this. Its second form basically pumps out laser shotgun blasts at the speed of a machinegun.
- Bullet Hell: During his second phase, he will be spraying countless laser blasts and Demon Scythes at a ridiculous speed. Not only does it do this itself, but this is also the focus of most strategies for fighting him.
- Call-Back: Oddly enough, to the Eye of Cthulhu. His strategy is similar, his flunkies are called "Servants of Ocram" like the Eye's "Servants of Cthulhu", and they share a battle theme.
- Eldritch Abomination: Quite. His appearance is extremely otherworldly even in comparison to the likes of the Celestial Pillars and the Moon Lord.
- Final Boss: Confirmed to be as such by the (console version's) developers.
- Flunky Boss: Sends out Servants of Ocram, though he has plenty of other attacks. They're fairly easy to kill if you use Crystal Bullets. However, don't mistake him for relying solely upon them.
- Giant Space Flea from Nowhere: Has no buildup or references, not even in the item used to summon him. He's also the only non-robotic Hardmode boss.
- Lightning Bruiser: He moves fast and hits HARD.
- Nintendo Hard: He's pretty much impossible to kill without near-endgame to endgame armor.
- Omnicidal Maniac: If you summon it too close to your house/town, it can and will kill your NPCs.
- Sdrawkcab Name: "Ocram" is "Marco" backward, the name of Ocram's programmer.
- Turns Red: His second form turns out his eyes, reveals a bigger eye, and also amps up the power of his Beam Spam attack while allowing him to launch Blinding Demon Scythes.
After defeating the three Mechanical Bosses, strange pink bulbs will begin gradually growing throughout the Underground Jungle. Breaking one will awaken the giant plant-like monster, Plantera.
- Autobots, Rock Out!: Unlike every other boss, Plantera's theme is a heavy guitar-laden piece. It also doubles as a Boss Remix of the Jungle theme!
- Combat Tentacles: Its invulnerable grappling hooks can deal damage, and it sprouts a bunch of smaller, destructible ones when it Turns Red. In Expert Mode, its grappling hooks sprout them too when it Turns Red!
- Berserk Button: If you lure it out of the Underground Jungle biome, it will become more aggressive and damaging.
- Flunky Boss: The plants that it sprouts when it Turns Red.
- Homing Projectile: Its second form launches Spores that will seek out and damage the nearest player.
- Impossible Item Drop: Plantera is a particularly strange case. Whereas most bosses can also drop some sort of item or weapon, most of them are somehow based on the abilities of the boss itself (e.g. the Book of Skulls fires the same skulls that Skeletron does in Expert Mode)... but what is Plantera doing with an electric guitar?note
- Man-Eating Plant: Even more so than the Man Eaters you used to encounter in the jungle.
- Pun: Of the band Pantera, especially so because of its unique boss theme.
- Rush Boss: Plantera's HP isn't too impressive compared to the mechanical bosses, who all have higher aggregate HP than it. However, what it lacks in durability it makes up for with heavy-hitting, hard-to-dodge attacks, especially since you're going to be fighting it in the cramped Underground Jungle or else.
- Spike Balls of Doom: Spits these out in its first phase.
- Spike Shooter: First phase uses these. The rate of its fire increases as it loses health.
- Turns Red: At half health, the flower will drop off and sprout tentacle plants, and it'll become much faster and damaging.
- Wake-Up Call Boss: Plantera is significantly harder than the Mechanical Bosses, and a large amount of preparation is needed to even stand a chance of killing it, especially since its bulb appears at complete random. Trying to lure it to a previously-crafted arena outside of the Underground Jungle is also a bad idea, discouraging the use of just building an ideal arena for battle.
A giant animated statue. Summoned by using a Lihzarhd Power Cell on an altar found inside the jungle temple.
- Cognizant Limbs: His arms can be attacked and destroyed separately, though this isn't necessary to beat him.
- Eye Beams: The first phase uses these when its health gets low. The head in the second phase also uses them.
- Fireballs: Spits out bouncing ones.
- Frickin' Laser Beams: The Eye Beams it fires are slower than light.
- Golem: It's a construct created by the Lihzarhd.
- Hyper-Destructive Bouncing Ball: The fireballs the head shoots out.
- Losing Your Head: When he Turns Red. Justified because he's a construct.
- Outside-the-Box Tactic: Tne Golem is one of two bosses unable to pass through solid blocks, allowing a player to trap him inside and attack him from there with a wall-piercing weapon.
- Power of the Sun: Many of the Golem's drops are associated with daytime and the sun.
- Rocket Punch: His arms. The Golem Fist he drops allows the player to do the same.
- Turns Red: Its head flies into the air and becomes invincible when its health is depleted, forcing you to attack its body directly.
A giant fish-pig-dragon hybrid summoned by using a Truffle Worm as fish bait in the ocean.
- Ascended Meme: Was originally supposed to be the boss of an April Fools' Day joke, the Tidal Moon event. While the event isn't real, Duke Fishron is.
- Berserk Button: If you lure him out of the Ocean biome, he will become more aggressive and damaging.
- Bonus Boss: He's the only Hardmode boss that doesn't need to be beaten in order to fight the Moon Lord, and you need to go somewhat out of your way in order to summon him.
- Bubble Gun: Spits homing bubbles at the player.
- By the Lights of Their Eyes: His Expert Mode ability shrouds the entire area in fog while he turns invisible, and his glowing eyes is one way to detect him before he charges.
- Desperation Attack: He gains one when he's at very low health on Expert Mode. It involves him turning the screen dark while he turns invisible before he charges you.
- Flunky Boss: Summons Sharknadoes and Cthulhunadoes that spew out flying shark projectiles called Sharkrons.
- Flying Seafood Special: He's a huge flying fish.
- Glowing Eyes of Doom: When he Turns Red.
- Homing Projectile: His bubbles and his Cthulhunado typhoon.
- Implacable Man: Got buffed in 1.3—he will repeatedly charge at you if you exit the ocean, instead of charging five times then attacking.
- The Juggernaut: It will only stop when it's transforming to its second state, pumping out bubbles or dead.
- King Mook: To both a Mook (Pigron) as well as a particular fishing catch (Fishron).
- Lightning Bruiser: Extremely fast, extremely painful, and sports 50000 health, more than most other bosses.
- Mix-and-Match Critters: A fish-pig-dragon creature.
- Mutant: The official achievement unlocked by beating him outright calls him one.
- Nintendo Hard: Deals painful damage with his attacks, moves extremely fast, and a lot of health to wear down. Speed-increasing items and Wings are pretty much mandatory if you don't want to be torn to shreds. In 1.3 and above, you're also constrained to fighting him within the ocean, or else he gets pissed.
- Ramming Always Works: Has a high tendency to ram the player.
- Shout-Out: Has the ability to summon Sharknadoes.
- Trademark Favorite Food: He can only be summoned via a Truffle Worm.
- Turns Red: Gains Glowing Eyes of Doom, charges faster but less often, and changes his bubble spray into a spinning spray that creates more bubbles and his Sharknado into a Cthulhunado which is much larger, homes in on the player before deploying, and summons many more Sharkrons. The Fishron Mount obtained from him in Expert Mode allows the player to do this—when low on health, the player gains an attack and speed buff.
- Expert added a third phase to his fight: at critical health, he will darken the screen, turn invisible, and continuously charge at you while constantly teleporting to approach you from different angles.
- Victor Gains Loser's Powers: When the player beats him, they get equipment based on his abilities: Flairon and Bubble Gun are based on his bubble spray, Tsunami is based off his relentless charges, Razorblade Typhoon is based off his Cthulhunado-spawning homing typhoons, the Tempest Staff is a smaller Sharknado, Fishron's Wings give the player the Duke's superior air and water mobility, and the Expert Mode Shrimpy Truffle nets the Duke himself as a mount, allowing you to Turn Red when low on health.
After Golem is defeated, a group of cultists will gather outside the dungeon praying towards an ominous stone. Killing all of them incites the wrath of the Lunatic Cultist, who absorbs the power of the stone, and attacks you.
- Apocalypse Cult: He's the leader of them.
- Big "NO!": He says this upon death.
- Doppelgänger Attack: If you fail to interrupt his Doppelgänger Spin, the copies follow him around in an upside-down 'V' formation and are able to attack you. They can't be damaged or destroyed until his next spin, which will cancel them out if you do it right.
- Doppelgänger Spin: After several magic attacks, he'll create several copies of himself surrounding a runic circle. If you don't hit the original (distinguished by a yellow vertical stripe on his hood, among other minor differences), it becomes a Doppelgänger Attack and he summons a phantasm dragon. Each time you fail this, he gains more copies until you get it right.
- Evil Sorceror: Very much so.
- Evil Sounds Deep: His voice sounds inhumanly deep as he prays to the stone in Black Speech before absorbing it and turning his attention to you.
- Fire/Ice/Lightning: Can cast homing fireballs, ice crystals that fire ice spikes, and lightning bolts.
- "Get Back Here!" Boss: He teleports all over the place between attacks and always tries to stay above you, even if you try to chase him down using flight.
- Humanoid Abomination: The Lunatic Cultist may look human, but his exceptional magical strength as well as his voice, which borders on Voice of the Legion, heavily implies that he is something not of this world.
- Instant Awesome: Just Add Dragons!: He can create a circle that summons a huge phantasm dragon.
- Instant Runes: He will create a massive runic circle just before creating a doppelgänger and attacking.
- Meaningful Name: He's lunatic in both senses of the word—crazy, and also moon-related.
- Unstable Equilibrium: The fight with him can either be reasonably difficult or downright impossible, depending on your ability to interrupt his Doppelgänger Spin.
- With My Dying Breath I Summon You: He summons the four Celestial Towers when defeated.
The Celestial Towers (Vortex, Nebula, Solar, and Stardust Pillar)
Four ominous pillars that appear after the Cultist is beaten. These spawn powerful alien enemies, and must be defeated by killing enough of their minions to break the shield. Each of the pillars and their mooks correspond to a method of offence - Vortex for ranged, Nebula for magic, Stardust for summoner and Solar for melee.
- Amazing Technicolor Battlefield: All of them turn the background to an ominous moon with coloured background when fought.
- Brown Note: It's suggested by the messages that appear after destroying them that they have a pretty bad effect on the player character. It is not clear whether this is the Towers' doing or the Moon Lord's.First Tower: "Your mind goes numb.."
Second Tower: "You are overwhelmed with pain..."
Third Tower: "Otherworldly voices linger around you..."
- Cosmic Entity: They have the markings of this as they both draw power from and seem to embody on a level their respective cosmic forces in the universe.
- Deflector Shields: When first encountered, they have a clear forcefield around them that makes them invulnerable. It's only when you kill off 100 (150 in Expert) of their minions that the shield breaks.
- Eldritch Abomination: All four of the pillars are some kind of otherworldly aliens. It's unknown if they're even sentient. Many of the Mooks they teleport in also fit this, if they aren’t humanoid.
- Flunky Boss: The pillars do attack, but mainly rely on spawning minions. It's also required that you beat enough minions first in order to attack the boss itself. Once their shields are down, though, they are practically helpless and only have 20000 HP.
- Mook Maker: Besides the bosses themselves, a number of the mooks can also spawn more mooks that will grow into even more Mook Makers if not removed in time.
- Our Wormholes Are Different/Swirly Energy Thingy: The Vortex Pillar creates these around the player, which spawn Alien Hornets.
- Playing with Fire/The Power of the Sun: The Solar Pillar's mooks are rather fiery and sun-like, and the pillar itself with attack with a shower of fireballs, many of which can be seen raining down in its background.
- Shock and Awe: The portals created by the Vortex Pillar can sometimes shoot a bolt of lightning at you, instead of spawning more Mooks.
- Shows Damage: Every time one of their minions (besides Crawltipedes) die, they generate a bolt of energy that strikes the Tower's shield and causes it to visibly weaken. The shield itself gets more and more transparent until finally bursting.
- Star Power: Of the Lovecraftian sort. The Stardust Pillar is able to create "stars" around it that spawn Star Cells and Milkyway Weavers.
- Stationary Boss: They don't move at all, and none of them apart from the Solar Pillar are directly capable of attacking you.
The Lunar Event Boss - a large, Cthulhu-like being that is summoned after the four Celestial Towers are destroyed. His arrival is signified by a sense of impending doom, as the screen starts warping and turning black. As of the 1.3 update, he is the final boss of the game.
- Attack Its Weak Point: The giant beating heart in his chest. The problem is that you must destroy all three of his eyes if you want him to expose it.
- Background Boss: Stays in the background all the time. However, touching its eyes (or where they used to be) will deal Collision Damage.
- Beam Spam: The Moon Lord excels at this, with his entire offensive pattern being pretty much trying to obliterate the player with endless volleys of eldritch-plasma blasts while trying to pick them off with up to three giant laser blasts in one go.
- Body Horror: His body from the neck down looks mostly human, but everything below the chest is missing, complete with exposed ribs and spine. His Cthulhu head also has an exposed brain, his heart is exposed through his chest, and his forehead and hands both have eyes set into them that can pop out and leave a gaping maw behind.
- Boss Vulnerability: Each of the targetable eyes are a Wait Them Out sort, while the heart is Always Vulnerable once it's exposed.
- Cognizant Limbs: The eyeballs in his hands and his Third Eye can attack separately and must be destroyed for him to expose his core.
- Cthulhu Mythos: Heavily resembles Cthulhu. His eyeball minions are even called "True Eye Of Cthulhu". Word of God has stated that he is Cthulhu's brother.
- Damage-Sponge Boss: His component parts have collectively more health than anything in the game. His Third Eye and heart have more health than every other boss save the Destroyer.
- Darkness Equals Death: He turns the background around him black, so if you lose track of him, a good way to find out where he's gone is the background rapidly growing darker as he slowly comes back.
- Eldritch Abomination: An eldritch horror from the depths of space.
- Evil Is Bigger: The largest enemy in the game as of now.
- Eyes Do Not Belong There: Has an eye in each of his hands. He can also fire countless energy eyeballs at you for his attacks.
- Eyes Are Unbreakable: Depleting the health of his eyes will simply cause them to pop out and become invulnerable True Eyes of Cthulhu instead of destroying them.
- Final Boss: Is this for the entire game.
- Flunky Boss: When each eye is beaten, they will become an invincible flunky that attacks on its own.
- Homing Projectile: Can fire Phantasmal Eyes that home in on players and explode.
- Implacable Man: Do not let his slow movement fool you, this guy will never stop coming unless he kills you or dies trying. He will never despawn unless you die, so he'll chase you quite literally to the ends of the earth and the fact that he teleports to you when you get far enough away from him doesn't help.
- Kaizo Trap: During his death animation, the holes where his weak points used to be will still hurt you; if you're low enough on health, you'll get killed and he'll disappear without leaving behind any of his valuable drops or giving you the achievement for killing him.
- Life Drain: Has an ability where his mouth sends out a sucker that starts draining balls of energy from you. If the balls are not destroyed before they reach his mouth, he regenerates health. During this, he'll inflict the Moon Bite debuff which also prevents you from lifestealing from him for the next fifteen seconds or so.
- Mighty Glacier: The most powerful boss, and yet also one of the slowest.
- He's immune to lifestealing effects from the Spectre Armor and the Vampire Knives when he's leeching energy from you.
- As of 22.214.171.124, it's impossible to "cheese" him via using Mercy Invincibility from other sources of damage—he will still hit you.
- Nothing Is Scarier: Before he appears, the background music ominously disappears.
- Power Floats: Floats around the area effortlessly.
- Sequential Boss: His three main eyes must be destroyed first, then his core will open.
- Standard Status Effects: Moon Bite is of the Decover type, preventing Life Drain effects from working on him.
- Stripped to the Bone: When beaten, his skeleton drops to the ground.
- Super-Persistent Predator: Will chase the players across the map. 126.96.36.199 made it such that he just teleports right to you if you get too far from it.
- Third Eye: While he has a lot of eyes to begin with, the one on his forehead is the most prominent: it has the most health, is closed for most of the time and is the only one that can fire the Phantasmal Deathray.
- Wave Motion Gun: Can fire a Phantasmal Deathray from his Third Eye. It sweeps around from one side of the screen to the other and does a great amount of damage, but is stopped by solid blocks. When an eye is detached, it can use a similar but weaker laser.
- You Will Not Evade Me: The 188.8.131.52 update made it such that he teleports right to you if you get too far from him.
What appears to be an NPC named "Lost Girl", similar to the ones the player can rescue. Approaching her, however, has her transform into a green-skinned nymph that will maul unsuspecting players with potent melee attacks.
- Barbie Doll Anatomy: She's depicted as fully naked, but lacks nipples or genitalia. Probably a display of modesty more than limitations of the art style.
- Full-Frontal Assault: She wears absolutely nothing while trying to kill the player.
- Horny Devils: Mentioned above, she's naked and fairly attractive. Until she turns that is...
- Lightning Bruiser: She hits like a truck, moves twice as fast as normal mooks, and is harder to knock back.
- Luck-Based Mission:
- Finding her in the first place is luck, because unlike other enemies she doesn't move. Unless you have the Lifeform Detector, it's entirely possible you'll pass right by without even noticing her.
- She has a 50% chance of dropping the Metal Detector, one of the items needed to craft the Cell Phone. Considering her rarity, this can make obtaining it pretty annoying. In Expert Mode, thankfully, it's a guaranteed drop. Prior to the 1.3 update, getting her banner was even worse, as the drop rate is only 0.5%. Now you just have to kill 50 of her. Good luck with that.
- Schmuck Bait: Hey, it's another NPC. I'll just go up and—"Player's flailing about was finally stopped by Nymph."
- You Gotta Have Blue Hair: She has light silver-y blue hair. Made more obvious in the "Deceiver of Fools" achievement image.
A Hardmode enemy that only spawns during Blood Moons. The Clown throws bombs, and, until Patch 1.2, was the only enemy in the game capable of damaging blocks.
The Sand Elemental uncommonly appears in a Hardmode Desert biome during a sandstorm.
The Ice Golem uncommonly appears in a Hardmode Ice biome during a blizzard.
- Eye Beams: Shoots Freeze Rays at the player from its eyes.
- Freeze Ray: Its Eye Beams have a chance of chilling or even freezing the player.
- Golem: One that's made of ice.
- An Ice Person: Its attacks deal icy damage and can freeze the player.
- Mighty Glacier: Moves slowly, but can deal a good amount of damage to the player via its Eye Beams.
The Wyvern sometimes appears in high altitudes in Hardmode.
- Boss in Mook Clothing: It's a normal (if uncommon) enemy that can spawn without warning, comes packing more HP than most pre-Hardmode bosses, and hits like a truck. What really puts them in this category, however, is that it does not get detected by the Lifeform Analyzer, unlike most uncommon enemies.
- Call a Pegasus a "Hippogriff" / Our Dragons Are Different: Despite having the name of a variant of Western Dragon, the design of this one is more Eastern.
- Instant Awesome: Just Add Dragons!: The only ones in the game, not counting Arch-Wyverns in the console version, and Betsy and the Stardust Dragon in the PC version.
- Super-Persistent Predator: Ever try teleporting back home just to get away from these beasts? Don't, because when you're least expecting it, they'll swoop out of nowhere from the sky to finish the job of killing you.
All slimes behave the same: They hop to get around and all but a few drop slime gel upon death. They come in all different colors and sizes such as green, blue, red, purple, yellow, black slimes that inflict darkness (reduced light vision), mother slimes and their baby slimes, Pinky, Jungle Slimes, Dungeon Slimes that drop keys instead of gel, Lava Slimes that turn into lava in Expert Mode, and The Slime King. In Hardmode, they are joined by the Toxic Sludge that can poison the player, Corrupt slime and its slimelings that can also inflict darkness with a Shadow Slime variant in the Console version, the slimer that flies on bat wings, and the glowing Illuminant slime that's found in the underground Hallow, above ground is the Rainbow Slime that can rarely spawn in rainstorms and drop rainbow bricks. The Crimson on the other hand will have Crimslimes that don't have the splitting or darkness inducing effect of Corrupted (or Shadow) slimes.
- Blob Monster: Naturally, given that they are gelatinous monsters.
- Glacier Waif: Pinky may be the smallest slime of the game, but it's only second to King Slime in terms of health when it comes to all of the slimes available before hardmode and it drops dozens of Pink Gel in contrast to its size.
- The Goomba: Slimes are generally the first enemy you'll encounter in Terraria. They're also some of the weakest and most numerous in the game.
- Informed Attribute: The gel they are made of is apparently rather tasty (particularly Pinky's), but it's impossible to eat it raw without crafting it into a potion.
- King Mook: The King Slime.
- Metal Slime: Pinky, who drops a single gold coin and some Pink Gel but happens to have the highest health of any pre-hardmode slime. Rainbow Slimes count too; they show up very rarely in the Hallow during rainstorms while you are close to pure land, and drop the sought-after Rainbow Bricks.
- Money Spider: Jungle Slimes, pre-hard mode. Most other enemies drop maybe one silver coin if they're high tier and you get lucky, while Jungle Slimes drop four or five silver coins as standard, aren't particularly hard to kill, and spawn in droves.
- Rare Random Drop: The Slime Staff has a 0.01% chance of being dropped by most slime variants. Hours upon hours upon hours can be spent trying to get the staff.
- Standard Status Effects: Darkness (reduced light vision) and poison. The lava slime originally counted for fire since they turned into lava when killed before a patch removed that trait, until it was added in again as an Expert Mode trait.
- Blown Across the Room: Pinky is more susceptible to knockback than just about any other enemy in the game, meaning that it often goes flying across the screen after a single hit. This also makes it harder to kill, since you often have to alternate between hitting it and running after it for another hit.
- Metal Slime: And an actual slime to boot.
Once night comes, slimes stop appearing, and zombies come instead. They're just like your standard zombie, being slow but coming in great numbers. They're especially dangerous during a blood moon, when they appear in greater numbers and gain the ability to open doors.
The GroomA zombie wearing a top hat that spawns during a blood moon, the top hat is also dropped upon death, like Dr. Bones, he also has higher HP than the regular zombie.
- Elite Mooks: Blood Zombies are tougher, faster, and more powerful versions of the regular zombie that only spawn during a blood moon. Expert Mode also adds zombies wielding severed arms as weapons, letting them hit harder and from longer range than your average zombie.
- Grievous Harm with a Body: Some zombies in Expert Mode come wielding severed arms as weapons. Additionally, almost all zombie variants have a chance of dropping a Zombie Arm that can be equipped by the player.
- Incongruously Dressed Zombie: Doctor Bones is dressed in archaeologist gear, while the Bride and Groom sport full wedding attire. The basic zombies also have Raincoat and Eskimo variants which spawn in rain and snow biomes respectively.
- Night of the Living Mooks: Literally, since they only spawn at night.
- Palette Swap: Zombies have a very wide range of possible sprites. Interestingly, each variant of zombie actually has slightly different stats, and some have different drops as well.
The GroomA zombie wearing a top hat that spawns during a blood moon, the top hat is also dropped upon death, like Dr. Bones, he also has higher HP than the regular zombie.
- Metal Slime: He only appears during a blood moon, and even then, only rarely, and has much higher health than a regular zombie.
- Nice Hat: Sports a nifty top hat that you can claim for yourself when you kill him.
- Shout-Out: It may be a reference to the zombie groomsman in Shaun of the Dead.
You spend a lot of time battling skeletons in the game so here's a list of them: The first type of skeleton is found underground and drops hooks occasionally. Then, there's the undead miner and Tim. Skeletron is fought to get into the dungeon. Once you get to the dungeon, you find angry bones that come in their normal size, along with big boned and small boned sizes. Also present are dark casters and then the cursed skulls (which can curse the player, rendering them unable to use items). In the underworld, you will find the bone serpent. On hard mode, the player fights armored skeletons and their heavy variants underground that poses a threat of breaking their armor (halved defense for five minutes) and skeleton archers that shoot flaming arrows at the player. And, finally, there is Skeletron Prime.
Rune WizardAppearing in the Hardmode Caverns, the Rune Wizard is an extremely rare enemy with one of the most powerful attacks in the game.
- Dem Bones: A whole collection of them, no less!
- Standard Status Effects: Cursed (unable to use items) from the flying cursed skulls, broken armor (halved defense for 5 minutes) from armored/heavy skeletons, and fire from skeleton archers.
- Metal Slime: Quite rare, and killing it is the only way to get the Bone Pickaxe and the Mining Armor.
Rune WizardAppearing in the Hardmode Caverns, the Rune Wizard is an extremely rare enemy with one of the most powerful attacks in the game.
- Glass Cannon: He can dish out some incredible pain, but he can't take a hit.
- Nice Hat: You get his hat and robe if you kill him.
- Teleport Spam: Not to the extent of the dungeon mages, but he does warp around if you can't kill him quickly.
- Drop the Hammer: And they will sometimes drop from dead Paladins, and allow you to do the same thing.
- Light Is Not Good: It has really bright armor, and it starts not-so bright chaos.
- Mighty Glacier: With its very high offense, it can easily maim you in seconds while you struggle to kill it.
- Sword Beam: In the form of hammer projectiles.
Once you start exploring the Corruption, there are various, sickly looking, enemies, starting with the Eater of Souls: Small, flying enemies that swarm the player, along with Big Eaters and Little Eaters, all three of which drop rotten chunks. There is also the Devourer Worm that burrows through the ground, also dropping rotten chunks, along with worm teeth, used for unholy arrows. Then the king mook of the environment is the Eater of Worlds (see above in bosses). Bunnies and goldfish turn into corrupted versions of themselves during a blood moon. Once in hardmode, the aforementioned Corrupt Slime and its slimelings spawn, along with the Slimer. Then there is the Corruptor, a flying enemy like the Eater of Souls but it can shoot vile spit that has a chance to weaken the player. If the Corruption spreads to a desert, dark mummies will spawn, which drop dark shards by chance. Deeper down underground, World Feeders start to spawn, looking like the EoW mentioned above, that drop cursed flames when killed. Cursed hammers also roam the caves, and charge their target, having a chance to curse the player (unable to use items). Finally, there's the Clinger that acts like a plant enemy such as the man-eater, but it can spew cursed fireballs, flames that cannot be put out, even by water, meaning they also drop cursed flames when killed.
- Airborne Mook: Eaters of Souls, Corruptors, and Slimers.
- Alien Kudzu: Although not confirmed, there all too many subtle hints that the Corruption at first may have been of extraterrestrial origin (i.e: the connection to meteors and the Shadow Orbs that are meant to be destroyed in order for them to appear, the Band of Starpower that can be released from said Shadow Orbs, etc).
- Dark Is Evil: It turns the landscape bleak and foreboding and turns the very rock black.
- Eldritch Location: This place compared to the land around it is unnatural. Weird, rotting monstrosities spawn out of deep chasms in the ground and it assimilates the land around it. All of that can tell you that all is not well in that land.
- Elite Mook: Corruptors, considering that they can appear much more often than other Hardmode corrupted creatures and have that little bonus of spreading the corruption with their vile spit. Past 1.2 though, the corruption spreading bit has been taken out but they have a decent ranged attack and enough health to shrug off some attacks.
- Evil Tainted Place: An evil, spreading biome that corrupts the land and turns critters into twisted, stronger versions of themselves.
- Foil: A rather obvious one to the Crimson: while both are eldritch (and possibly, truly extraterrestrial) Alien Kudzu anomalies, the Corruption more represents inherent evil than the visceral horror of its counterpart and is somewhat more fantasy-like in nature, which becomes more apparent in Hardmode.
- Flying Weapon: The Cursed Hammer; a flying cursed hammer, of course.
- Giant Mook: Big Eaters, which are slightly stronger than the regular Eaters. World Feeders are this to Devourers.
- Mini Mook: Little Eaters, which are slightly weaker than the regular Eaters.
- Shout-Out: Possibly one to The Colour Out of Space.
- Standard Status Effects: Corrupt Slimes and Dark Mummies inflict Darkness, Clingers inflict Cursed Inferno (water cannot put it out), Corruptors inflict Weakness (reduced stats) and Cursed Hammers inflict Cursed (cannot use any weapons or consumables).
- Unholy Ground: An evil land filled with various eldritch monsters that spreads to the lands around it, ayup. It's so unholy that NPCs cannot live on it.
The Crimson biome appears as an alternative to the regular Corruption, a land of rotting flesh and bodily fluids. Their lands instead resemble neuron pathways rather than the "impact craters" style of their counterparts. Their normal mode enemies include the Crimera, a floating cockroach-like expy of the Eater of Souls, Face Monsters which are basically faster and tougher zombies, Blood Crawler which are giant spiders which crawl long the walls to get you, and Blood Feeders which are monstrous fish. Hardmode enemies include the Crimslime, the Floaty Gross, the Herpling, and the Ichor Sticker.
- Alien Blood: Ichor, the elemental counterpart to the Corruption's Cursed Flames, is consistently portrayed as both the Greek mythology (blood of gods and / or immortals, deadly to mortals) and the bodily fluid (i.e: pus) versions of its namesake.
- Alien Kudzu: Possibly, just like the Corruption (if the connection to Cthulhu with the Brain of Cthulhu and by extension, the Moon Lord, was any indication).
- Animalistic Abomination: Blood Crawler and Blood Jellies.
- Artistic License – Biology: The Blood Crawler drops vertebrae despite being based on an invertebrate. Could be a way to show that the eldritch nature of the Crimson that goes against nature itself.
- Big Creepy-Crawlies: Blood Crawlers are basically huge ticks.
- Bloody Murder: The Ichor Sticker shoots ichor at you, described as the blood of gods.
- Body Horror: Face Monsters. Floaty Gross as well, if it's name is any indication; considering that it rather looks like a Gardevoir made out of bodily fluids, one could say it's pretty spot-on...
- Came Back Wrong: The Floaty Gross is classified as an Undead enemy, and it has come back alright, and very very wrong.
- Eldritch Location: Like the Corruption. It's an otherworldly, unnatural place that turns the earth itself into flesh as it assimilates it, and spawns murderous, disgusting, Body Horror-riddled Eldritch Abominations.
- Expy: The Crimera to the Eater of Souls, Crimslime to Corrupted Slime, the Ichor Sticker to the Corruptor and the Crimson Axe to the Cursed Hammer.
- Evil Is Visceral: An evil place with a flesh, blood and gore theme.
- Evil Tainted Place: An alternative to the usual purple one.
- Foil: To the Corruption: while both are eldritch (and possibly, truly extraterrestrial) Alien Kudzu anomalies, the Crimson more represents visceral horror than the inherent evil of its counterpart and is even more sci-fi in nature (especially if one believes in the theory that the Crimson is just Cthulhu's rotting remains tainting the landscape).
- Flying Seafood Special: The Ichor Sticker is basically a flying squid.
- Flying Weapon: The Crimson Axe. A counterpart of the Cursed Hammer.
- Humanoid Abomination: Face Monsters and to a lesser degree Floaty Grosses.
- Lovecraftian Superpower: The Ichor Stickers wear this on their sleeve.
- Nightmare Face: There's a pretty good reason why the Face Monster is named that way.
- No-Sell: Forget using Sunflowers to stop Pre-Hardmode Crimson, it will uproot them and take over the grass instead.
- Prophet Eyes: Any Crimson creatures with visible eyes have them glazed over with a reddish tint.
- Red and Black and Evil All Over: The combination of black necrotic flesh and blood-covered tissue give it this look.
- Theme Naming: Many of the Crimson creatures and related items begin with "Crim".
- Shout-Out: How the trees in the background of Forests afflicted with Crimson are covered in intestines and overall the entire biome's red gore theme (and possible connection to an extraterrestrial lifeform) brings to mind the Red Weed from War of the Worlds.
- Standard Status Effects: Ichor Stickers inflict Ichor (lowers defense considerably), while the Floaty Gross inflicts Weakness.
- Womb Level: It's definitely this.
Once hardmode is activated, the hallow will start spreading as a bright, colorful environment with pearlstone, teal-colored grass, and rainbow-colored trees. This is also a straight example of Light Is Not Good, meaning that the inhabitants aren't merciful, such as violent pixies that deal heavy amounts of damage, along with a chance to slow you or silence you (unable to cast spells). Pixies drop dust when killed. Unicorns also roam around the hallow, and will charge you at high speed. They drop unicorn horns for the purpose of holy arrows and such. At night, there are also gastropods that can slow the player on contact, fire lasers at you from as far as off-screen, and drop gel upon death, like slimes do. Hallowed deserts contain a light equivalent of the dark mummies that drop light shards. Underground, there's the aforementioned illuminant slime as well as an illuminant bat. Chaos elementals that Teleport Spam to attack and avoid the player are also found here. Contrasting the underground corruption, there are enchanted swords that also attack the player and curse them.
- Crapsaccharine World: Bright, cheerful and healthy for the environment...and filled with vicious fairytale creatures.
- Flying Weapon: The Enchanted Sword. Unrelated to the equipable sword of the same name (in fact it looks like a glowing Excalibur). It's also the Hallowed version of the Crimson Axe and Cursed Hammer.
- Flying Seafood Special: Gastropods, if you consider them jellyfish.
- Heavenly Blue: Hallowed grass becomes blue, and the Hallow in general is stated as having been overcome by the spirits of light. Additionally, there's also the Holy Water, a thrown weapon that spreads hallow upon impact.
- Holy Is Not Safe: Unless you enjoy getting gored repeatedly by unicorns and poked to death by hostile pixies, do not tread lightly on the Hallow.
- Light Is Not Good: Played painfully straight - despite the rainbows, pastel colors and flora-friendly atmosphere the biome is filled with creatures just as dangerous as the ones dwelling within the Corruption and Crimson. However, the Hallow does not force NPCs to move out unlike the Corruption and Crimson.
- Lightning Bruiser: Unicorns. Chaos Elementals, considering that they can take about as much in damage, move as fast as the player and also Teleport Spam to close the distance even faster.
- Standard Status Effects: Pixies inflict slowness (along with the gastropod) and silence, enchanted swords inflict cursed, light mummies inflict confusion.
- Teleport Spam: Chaos Elementals teleport near the player and dash around. They have a small chance of dropping a Rod of Discord, which allows the user to teleport.
The Blood Moon has a 1 in 10 chance of occurring each night with a visible moon so long as a player with 120 health or more is in the world. Unlike other events, the Blood Moon incorporates biome specific monsters as well as their event specific monsters into the fray. In addition, certain harmless critters, such as rabbits and goldfish, turn hostile during the event, and will attack the player. Zombies and other monsters gain the ability to open doors, making them a much larger threat then they are usually.
- Total Eclipse of the Plot: Possibly, as real-life blood moons are actually lunar eclipses.
The Slime Rain occurs once the player(s) have 140 life and 8 defense or it can occur before that with a lower chance in Expert Mode, at a ≈%10 chance per day pre-hardmode and a ≈%6 chance during hardmode. When it occurs, Slimes literally start falling from the sky even when enemies normally do not spawn such as being near NPCs. The event ends 24 (in-game) hours after it begins or when the player kills 150 slimes then it will summon the King Slime, after which the event ends when the King Slime is defeated. Subsequently, the chances of a Slime Rain occurring after defeating the King Slime are roughly halved and it only requires killing 75 slimes the next time a Slime Rain occurs.
- It's Raining Men: The idea behind this event. The background even changes accordingly to feature this.
Old One's Army
A special crossover event (from Dungeon Defenders 2). Triggered by placing an Eternia Crystal on an Eternia Crystal Stand, the objective is to protect the Eternia Crystal from waves of enemies seeking to destroy it. Unique in that the event's difficulty depends on when you trigger it: triggering it after defeating the Golem results in more waves of enemies (and the enemies themselves having better stats) than you'd get if you triggered it as soon as it's available. When triggered in its hardest version, the event ends with a fight against a "boss", Betsy.
- Action Bomb: Both Kobolds variants are some of the few enemies in the game that do this.
- Fire/Water Juxtaposition: Betsy (fire) and Duke Fishron (water). Betsy has an attack pattern very similar to Duke Fishron's, both alternating between charging, a blowing attack (a fire breath and several bubbles, respectively), and throwing projectiles (fireballs and sharknados, respectively). They're meant to be fought at roughly the same moment of the game (soon after defeating Golem), and accordingly they have the same health (although Betsy has lower damage and defense since it's part of an event, while Duke Fishron is a stand-alone boss).
- Flunky Boss: The Dark Mage has the power to summon Old One's Skeletons.
- Instant Awesome: Just Add Dragons!: Betsy is the only enemy in the game based on a Western dragon (other dragon-like enemies like Wyverns or Phantasm Dragons resemble more Eastern dragons).
- Our Monsters Are Different: An interesting case. The enemies that appear during the event are all based on enemies from Dungeon Defenders 2. However, many of those enemies (namely skeletons, goblins, wyverns and lightning bugs) happened to share a name with creatures previously found in Terraria, even though all of them are very different from the already-existing version (the normal lightning bug is even a critter). To distinguish them, the new version has "Etherian" or "Old One's" in front of his name.
- Our Ogres Are Hungrier: Ogres appear as a mini-boss during this event.
- Shockwave Stomp: One of the Ogre's attacks.
- Standard Status Effects: Several of them. Lightning Bugs can reduce your damage while Wither Beasts can reduce your defense. Ogres throw you a snot ball that slows you while Betsy is able to burn you.
- Tower Defence: As expected from an event inspired by Dungeon Defenders 2.
- You Shall Not Pass: Your goal in the game is to prevent hordes of mobs from taking out your crystals.
Once the player has over 200 health and has defeated either the Eater of Worlds (if they are playing in a game world with Corruption) or the Brain of Cthulhu (if the game world has Crimson), then the goblin army may invade at the start of a random day.
- Airborne Mook: The Summoner can fly around to evade your attacks.
- Berserk Button: Apparently you can start a war with them using a flag made of tattered cloth. The Goblin Tinkerer mentions that they have quite the Hair-Trigger Temper.
- Boss in Mook Clothing: The Goblin Summoner, who only appears in Hardmode, is much beefier than the rest of her army and summons homing projectiles on you.
- Fragile Speedster: Thieves - weak but fast, and they can open doors faster than other goblin types.
- Glass Cannon: Archers: they're not as fragile as the wizards, but they are made short work of if you get close to them.
- The Goomba: Goblin Peons are the weakest and most expendable units, although they do have the ability to break down (not open like Blood Moon Zombies, break down) doors.
- Hitbox Dissonance: Peons and Thieves have a smaller hitbox than their sprite, allowing them to squeeze through smaller areas.
- Mighty Glacier: Goblin Warriors. They're big and slow and can take more hits than the Peons.
- Squishy Wizard: Sorcerers, who are commonly offed with a single hit. Subverted with Summoners, who have much more health than the rest.
- Teleport Spam: Sorcerers, and the Goblin Summoner takes this Up to Eleven.
- Zerg Rush: A single goblin (aside from the Summoner) is barely a threat, but given that they come in an army, they can still pose a threat to weaker characters by weight of numbers.
- Metal Slime: Quite rare, only spawn on the outside of the map, and killing several of them is the only way to get the summoning item for the Goblin Army.
The pirate invasion can occur during Hardmode by a 6.22% chance at the start of any day or if the player uses a pirate map (dropped from enemies in the ocean) and approaches much like a goblin invasion. The force consists of Deckhands, Deadeyes, Corsairs, Crossbowers, Captains, Parrots, and the "boss", the Flying Dutchman.
- Airborne Mook: Parrots are fast flying enemies that deal large amounts of damage if they hit you.
- Authority Equals Asskicking: The Captains are the toughest to deal with out of all the types of pirates.
- Boss in Mook Clothing:
- Captains, which come with high HP, are immune to knockback (although constant DPS and DOT does keep them from attacking) and carry a rapid fire machine gun with a cannon strapped to it like an M203.
- The Flying Dutchman, a large flying pirate ship that rains cannonballs and drops pirate mooks into the fight. It has four high health cannons that must be taken down in order to be beaten.
- Guys Smash, Girls Shoot: The Deckhands and Corsairs will attempt to charge the player, and while the Deadeye and Captain do use ranged weapons, they still attempt to move towards the player to deal collision damage. The female crossbower however stays in the back lines firing flaming arrows.
- Mighty Glacier: The Captains are immune to knockback and can both dish out and endure heavy damage. However, they are quite slow.
- Pirate Girl: The Crossbower is one of the few female humanoid enemies in the game.
- Pirate Parrot: The parrots, which appear alongside the pirates.
After a Mechanical Boss has been defeated, there is a 4% chance that the entire day may be a Solar Eclipse, where monsters straight out of horror movies appear in droves to attack the player. It can also be summoned by using the Solar Tablet during the day. The monsters include Swamp Things, Vampires, Eyezor, Frankenstein, The Possessed, Fritz, and Creature from the Deep. Reapers and Mothron appear after all three Mechanical bosses are beaten, and Butchers, NailHead, Deadly Spheres, Psycho and Dr. ManFly appear after Plantera is beaten.
- Boss in Mook Clothing: Mothron is counted as a normal enemy, but it has nearly boss-level health, a powerful dash attack, and can spawn eggs that hatch into smaller versions of itself.
- Monster Mash: Loads of classical and horror movie monsters spawn during this event.
- Shout-Out: Nearly all of the enemies are based on various horror movie monsters.
- Total Eclipse of the Plot: Its in the name. A solar eclipse takes up the entire day, spawning monsters that will keep the player busy.
- Wall Crawl: The Possessed can climb on background walls toward you. It's also immune to knockback while doing so, forcing you to try and wear down its health before it reaches you.
When traveling around the map after Golem is defeated, one may spot a Martian Probe. If the player gets into its sensors, it will attempt to fly away, and if successful, the Martian Madness event will trigger. The force consists of Martian Walkers, Martian Drones, Martian Officers, Brain Scramblers, Gigazappers, Gray Grunts, Martian Engineers (and their spawned Tesla Turrets), Skutlix, Skutlix Gunners, Ray Gunners, and the boss, the Martian Saucer.
- Airborne Mook: Martian Drones fly around and attempt to kamikaze the player.
- Alien Blood: Their blood seems to be purple in colour, considering the color of the flesh on their gibs.
- Boss in Mook Clothing: The lightning-quick Martian Saucer. It has four high health cannons that provide it with a plethora of attacks such as Beam Spam and Macross Missile Massacre, and a Death Ray it will use that deals huge damage. When those four cannons are destroyed... it becomes vulnerable, but will then repeatedly use the Death Ray attack. Thankfully, you can spare yourself from the beam by hiding underneath some blocks. The game even displays a "Martian Saucer has been defeated!" message when one is destroyed as it does for bosses, and the Saucer has its own trophy.
- Boss Rush: It's not uncommon for a new Martian Saucer to show up as soon as you destroy one.
- Beam Spam: The entire event packs enemies carrying various Tesla Turrets and ray guns. You will be on the receiving end of this when enough of them show up. The Martian Saucer also has two laser machine-guns included in it's armament and will occasionally stop to rain a hail of painful energy bolts upon your position.
- Deflector Shields: The Martian Officer sports these, allowing him to take more damage than the normal martians.
- Flying Saucer: The Martian Saucer. It can drop a Cosmic Car Key, which allows you to ride your own.
- The Greys: The martians are based off these.
- Kaizo Trap: When the Martian Saucer explodes, it launches bits of scrap that can still deal contact damage.
- Macross Missile Massacre: The Martian Saucer possesses two missile launchers on it's sides, and will use them to let loose a sizeable volley of homing missiles upon your position.
- Mind Rape: The Brain Scrambler, as its name suggests. Its ray gun fires lasers that can inflict the Confused status.
- Shock and Awe: The Tesla Turrets deployed by Martian Engineers. It can even cause an "electrified" debuff that deals constant damage, more so if you're moving. The Martian Saucer can drop the Electrosphere Launcher.
- Tripod Terror: The Martian Walkers.
- The Turret Master: Martian Engineers can spawn Tesla Turrets which attack you.
- Wave Motion Gun: The Martian Saucer has one of these. It can also drop the Charged Blaster Cannon which can be charged to fire this.
- Weaksauce Weakness: The Martian Saucer has no attacks which can pass through blocks. A simple box thick enough to block splash damage from the missiles renders it harmless, provided you leave a hole for something to shoot through or something that shoots through blocks.
The Pumpkin Moon
By crafting a Pumpkin Moon Medallion and using it at night, the player can summon the Pumpkin Moon. The Pumpkin Moon is similar to the Goblin and Pirate invasions, but it also has some special mechanics of its own. The invasion will progress in waves, each one featuring progressively harder batches of enemies to fight. The player can encounter Scarecrows, Splinterlings, Hell Hounds, Poltergeists, and Headless Horsemen. Killing enough enemies will allow the player to move on to the next wave until they reach wave 15, the final wave. Another key difference from the other invasion events is that starting with wave 4, boss-like enemies will emerge. In this case, they are Mourning Wood and Pumpking.
- Boss in Mook Clothing: The Headless Horseman is halfway between the mooks and the bosses, boasting a huge health pool (more than Mothron and slightly less than Mourning Wood), extremely high contact damage, and immunity to all debuffs. It's still counted as a normal enemy.
- Scary Scarecrows: The first Mook to show up. A-list Cannon Fodder compared to the other monsters.
- When Trees Attack: The Splinterlings and Mourning Wood.
- Zerg Rush: The basic premise of the first few waves, before the Mourning Wood appears. After Wave 15, you can end up being zerged by the bosses.
- Flechette Storm: Sprays out loads of burning spikes and splinters.
- Getting Crap Past the Radar: Its name is a play on the term referring to morning penile erections, and the term has also been used as slang for getting an erection during a funeral.
- King Mook: To the Splinterlings.
- Mini-Boss: Quite a powerful Mook, but not too hard to defeat.
- Playing with Fire: Spits flaming pieces of wood at you to attack.
- Time-Limit Boss: Mourning Wood will attempt to flee at dawn, when the Pumpkin Moon ends. However, it's slow enough that you can still easily finish it off before that happens.
- When Trees Attack: A dead, burning tree that tries to kill you.
- Authority Equals Asskicking: The Pumpkin Moon's final adversary, and the most powerful.
- Badass Cape: He doesn't seem to have a body under it, but he wears a nice black cape anyway.
- Call-Back: Has some similarities to Skeletron, in that it is a floating body that attacks using two disembodied arms. However, Pumpking has some nasty tricks of its own, like firing large scythe-shaped projectiles at the player.
- Sinister Scythe: Has two for arms.
- Playing with Fire: Can conjure flaming scythes and also spit embers at you.
- Power Floats: Constantly floats around the area, making it somewhat annoying to hit him.
- Time-Limit Boss: When dawn breaks and the Pumpkin Moon ends, Pumpking will vanish immediately.
The Frost Moon
The Frost Moon works similarly to the Pumpkin Moon, but features even more difficult enemies to deal with. Crafting and using the Naughty Present will make the player the target of an invasion by nightmarish Christmas-themed enemies: living Gingerbread men, Zombie Elves, Elf Archers, Nutcrackers, Yetis, Elf Copters and multiple Krampus. The Frost Moon also has three "boss" monsters with the Everscream, Santa-NK1 and the Ice Queen.
- Nintendo Hard: The Lunar Events aside, this is the toughest event in the game yet.
- Non-Human Undead: Zombie Elves.
- Zerg Rush: The basic premise of the first few waves, before Everscream appears.
- Flechette Storm: Shoots out a flurry of razor-sharp pine needles.
- Mini-Boss: Has less health than a boss-level enemy, but still a very formidable foe.
- Improbable Weapon User: Can also fire out exploding Christmas ornaments.
- Suspiciously Similar Substitute: Is pretty much a Christmas-themed version of Mourning Wood. However, its attacks can't pass through blocks.
- When Trees Attack: A Christmas tree that tries to kill you.
- Backpack Cannon: It's used to fire presents that rain down on you.
- Badass Santa: Like the other boss enemies in this event, he won't disappoint in terms of asskicking when he shows up.
- Bad Santa: While Santa himself is not evil in Terraria, Santa-NK1 is a Santa-faced tank that tries to blast the player into bloody chunks with machine guns, rockets, and explosive presents.
- Death from Above: Can make it rain down explosive presents on you.
- Gatling Good: Carries an arm mounted Gatling gun, which he will fire upon you with sometimes.
- Heavily Armored Mook: It has one of the highest defense ratings in the game.
- Killer Robot: It's a Santa-based robot that attempts to massacre you with a huge arsenal.
- Macross Missile Massacre: Carries a rapid missile launcher. Unlike the machine gun, the rockets can penetrate blocks.
- Mini-Boss: Has less health than a boss-level enemy, but still a very formidable foe.
- More Dakka: Carries a gatling gun. Can drop the chain gun which is faster
- Skull for a Head: Damage it enough and its face is revealed to be similar to that of Skeletron Prime.
- An Ice Person: Quite literally by the looks of it. As well as the fact that almost all attacks she has mainly consist of spewing shards and waves of ice at her opponents.
- Authority Equals Asskicking: She's an ice queen and she is an utter nightmare to face. As well as the fact that she is the deadliest enemy on the Frost Moon.
- Dark Action Girl: When she appears it's a This Is Gonna Suck moment for some players as she is no slouch in her objective to put you down, sometimes succeeding as well. Even exceptional Terraria players sometimes find her a bit of a handful.
- Everything's Better with Spinning: Can spin around to fire out a huge storm of shards.
- Flechette Storm: Fires out loads of ice projectiles.
- "Get Back Here!" Boss: The Ice Queen spends much of her time just offscreen using ranged attacks against you, occasionally swooping overhead before flying off again. She's only stationary for her icicle attack, which is fired in every direction.
- God Save Us from the Queen!: She's presumably a queen of sorts, and is an incredibly nasty enemy and the boss of the Frost Moon.
- Lightning Bruiser: The Ice Queen's power is surpassed only by how insanely fast she is. She also has more health than Plantera!
- Power Floats: Constantly floats around the area, making it very annoying to hit her.
- Standard Status Effects: Can cause you to get chilled or even frozen.
- Tactical Suicide Boss: The Ice Queen is usually moving extremely fast, out of range from your attacks. However, once in a while she stops to throw you ice shards, giving you a chance to attack her.