A list of characters who appear in the Thorium Mod for Terraria.
NPCs
A town NPC that moves in once the player has any boots in their inventory. Sells various types of boots and provides a free buff that increases your mobility.
- Art Evolution: He, like the rest of the town NPCs, had a complete resprite with the 1.6.5.5 update.
- Retired Badass: A few of his quotes allude to him being a former adventurer, and it's implied he even defeated the Primordials.In my younger years, I myself was a hero. My allies and I faced a trio of entities I shudder to remember. We lost someone special that day... Ah, but worry not friend, we were able to seal them away. Only the defeat of something cataclysmic could possibly bring them back!
A town NPC that moves in once the Grand Thunder Bird has been defeated. He sells desert-themed items (which are mostly centered around the Throwing class), and can be paid 1 gold to kick-start a sandstorm.
- Art Evolution: He, like the rest of the town NPCs, had a complete resprite with the 1.6.5.5 update.
- Anti-Frustration Features: He can be paid to kick off a sandstorm instead of having to wait around for one to begin.
- Blow You Away: When enemies are near he will defend himself with magical gusts of wind.
- Shout-Out: One of his names, Ba'kii Kum, is a reference to a desert town on the same name in the game CrossCode.
A town NPC that moves in after the player has defeated the King Slime. He sells a variety of food that can provide both healing and buffs, and can have more of his recipes unlocked by giving him certain ingredients.
- Art Evolution: He, like the rest of the town NPCs, had a complete resprite with the 1.6.5.5 update.
- Hidden Depths: He's a surprisingly good craftsman, judging from the fact that his sold utensils function as surprisingly useful weapons. Not to mention the fact that he knows how to make a decently powerful potato launcher...
- Improbable Weapon User: Throws plates to defend himself.
- Shout-Out: All his possible names are the names of celebrity chefs.
- "Alexis" is a reference to Alexis Soyer, a French chef who became the most celebrated cook in Victorian England.
- "Alton" is a reference to Alton Brown, an American celebrity chef and television personality.
- "Antoine" is a reference to Marie-Antoine Carême, an early practitioner of haute cuisine and one of the first internationally renowned celebrity chefs.
- "Auguste" is a reference to Auguste Escoffier, a French chef, restaurateur and culinary writer who popularized and updated many haute cuisine methods.
- "Emeril" is a reference to Emeril Lagassé, an American celebrity chef, restaurateur, television personality, and cookbook author.
- "Éric" is a reference to Éric Lanlard, a French pâtissier and celebrity chef.
- "Fernand" is a reference to Fernand Point, a French chef and restaurateur, considered to be the father of modern French cuisine.
- "Flay" is a reference to Robert William "Bobby" Flay, an American celebrity chef, restaurateur, and reality television personality.
- "Gordan" is a reference to Gordon Ramsay, a renowned British chef, restaurateur, and television personality.
- "Guy" is a reference to Guy Fieri, an American restaurateur, author, game show host, and television personality.
- "Jacques" is a reference to Jacques Pépin, an internationally recognized French-born American chef, television personality, and author.
- "Jamie" is a reference to Jamie Oliver, a British celebrity chef famous for his TV shows.
- "Joel" is a reference to Joël Robuchon, a French chef and restaurateur who possessed the most Michelin Guide stars in the world.
- "Philip" is a reference to Philip Harben, an English cook recognized as the first TV celebrity chef.
- "Thomas" is a reference to Thomas Keller, an American chef, restaurateur, and cookbook writer.
- "Wolfgang" is a reference to Wolfgang Puck, an Austrian-American chef, restaurateur, and actor.
- Supreme Chef: He's capable of cooking up a surprisingly wide variety of foods, provided that you give him the ingredients. He's even able to turn things like Rotten Chunks or Vertebrae edible!
A town NPC that moves in once the player has beaten the Mini-Boss Patch Werk in the Blood Moon. Sells a variety of death-related items, and can provide you with a random one of five Enemy Repellents every half day for 2 gold.
- Art Evolution: He, like the rest of the town NPCs, had a complete resprite with the 1.6.5.5 update.
- Friendly Zombie: As the only zombie who doesn't attack the player, this makes him this by default.
- Horror Hunger: It's implied he still has the same taste in food as other zombies, though it's Played for Laughs.I bet [Name of Guide] has a big juicy brain... Not that I would wanna... uh... Did you need something?
- Punny Name: All of his names reference death, blood, or decay in some way, such as Leech, Bile, Bloat, Fester, or Mort.
- Shout-Out: One of his possible names is Richter, a reference to Heinz Richter from Nazi Zombies.
- Token Heroic Orc: He's the only zombie that isn't a mindless evil monster, and is happy to help the player.
- Wistful Amnesia: He's lost most of his memory of who he was before he became a zombie, but he can still remember bits and pieces of it.I can't remember much about my past life... Chemicals and the like were my passion I think; I only get fragments and pieces of the truth. It's saddening at times...
A town NPC that moves in once the Eye of Cthulhu is defeated. Sells numerous tools and weapons, along with metal bars.
- Anti-Frustration Features: The Blacksmith is very helpful for crafting Terrarium Cores, as he sells most Pre-Hardmode ores.
- Art Evolution: He, like the rest of the town NPCs, had a complete resprite with the 1.6.5.5 update.
- Permanently Missable Content: The Steel equipment he sells is unique to Pre-Hardmode. Once you enter Hardmode, he'll replace it with more powerful gear.
- The Blacksmith: Exactly What It Says on the Tin.
A town NPC that moves in once the Eye of Cthulhu is defeated. He will give you contracts to kill certain monsters, which in turn unlock more of his shop options. His items are purchased using Vanquisher Medals, an exclusive currency dropped by his contracted enemies.
- Art Evolution: He, like the rest of the town NPCs, had a complete resprite with the 1.6.5.5 update.
- Global Currency Exception: He sells his stock for Vanquisher Medals, which are dropped by certain rare monsters.
- Hunter of Monsters: He seems to be this, though he mostly just hangs out at whatever house you build for him and sends you to kill monsters.
- Shout-Out: Many of them in his monster hunts.
- "Arc of the Lost Raider" is a reference to Raiders of the Lost Ark.
- The icon for "Ice Breaker" is a reference to Bigfoot from the Patterson–Gimlin film hoax.
- "Not So Itsy Bitsy" refers to the nursery rhyme "Itsy Bitsy Spider".
- "Drunken Sailor's Query" is a reference to the sea shanty "Drunken Sailor".
- "Gonna Need a Bigger Lamp", along with the contract icon, are references to the "Moth Lamp" meme.
- "Destroy All Monsters" is named after the 1968 kaiju film of the same name.
- One example that isn't in his monster hunts, one of his names, "Guts", is a reference to a character of the same name from Berserk.
- Side Quest: His purpose as an NPC is to send you off to hunt down various monsters in exchange for his special currency.
- Why Did It Have to Be Snakes?: The descriptions for his hunts for the jungle Moth and Mothron imply he has a phobia of moths.
A town NPC that must be rescued from the Queen Jellyfish. Sells aquatic-themed items and can give you an Emergency Air Tank, which consumes itself to refill your air meter when you're at critical air. He will refill the tank free of charge.
- Art Evolution: He, like the rest of the town NPCs, had a complete resprite with the 1.6.5.5 update.
- Distressed Dude: You have to get him outside an enormous jellyfish when you first meet him.
- Gameplay and Story Integration: He's wearing a metal outfit that covers his entire body, and he has the highest armor rating of any town NPC.
A town NPC that moves in once the player has beaten the Corpse Bloom in the Jungle. Sells seeds and other nature-related commodities.
- Art Evolution: She, like the rest of the town NPCs, had a complete resprite with the 1.6.5.5 update.
- All Periods Are PMS: Just like most of the other female NPCs, she becomes rather abrasive during a Blood Moon.Why don't you go fetch those plants yourself you lazy, good for nothing-
- Amazing Technicolor Population: Her skin is noticeably tinted green, hinting that her father may have been a Lihzahrd or some kind of plant creature.
- Anti-Frustration Features: The Druid can be obtained relatively early into a playthrough and provides plant seeds for purchase. This can alleviate some of the hassle involved in potion creation.
- Early-Installment Weirdness: Earlier versions of the mod had dialogue from her that stated she only ate meat, but current versions of the mod imply that she's a vegetarian.I wonder if I can convince <name of Cook> to whip me up a salad.
- Half-Human Hybrid: It's implied that her father wasn't human, though his exact nature isn't specified.My mother was a well known herbalist back in the day. She doesn't talk about my father, though. I wonder why?
- The Smurfette Principle: She's the only female town NPC added by the mod.
A town NPC that moves in once the Buried Champion has been defeated. He sells numerous items centralized around the Healer class, and can be paid 5 Purified Shards to give you a buff which saves you from one lethal attack.
- Art Evolution: He, like the rest of the town NPCs, had a complete resprite with the 1.6.5.5 update.
- In the Hood: He wears a hooded, light-grey robe.
- Light Is Good: He's a helpful NPC associated with light and holiness.
- Shout-Out: One of his names, "Algalon," is a reference to the character Algalon the Observer from World of Warcraft.
A town NPC that moves in once the Wall of Flesh has been defeated. He sells a number of powerful weapons, and for 10 gold he can be hired to follow you around as an invincible minion.
- Art Evolution: He, like the rest of the town NPCs, had a complete resprite with the 1.6.5.5 update.
- Deal with the Devil: Subverted. You can sign a blood pact with him to hire him as a temporary companion who will aid you in fights, but it only costs money and carries no negative consequences.
- Guest-Star Party Member: You can hire him to act as a companion to you in the now deadly world.
- Punctuation Shaker: Several of his names have an apostrophe in the middle, such as Glib'tok and Greth'zek.
- Thousand-Yard Stare: When you hire him, the actual Weapon Master NPC remains where he was. However, trying to talk to him just results in this, implying that the NPC you normally interact with is just an Empty Shell inhabited by the more obviously demonic form that appears when you hire him.<Name of Weapon Master> blankly stares through you, as though he's not entirely there...
- Token Heroic Orc: He's a demon, but he's willing to help out the player.
- Walking Shirtless Scene: Though it's not immediately obvious due to the pixel-art graphics and the fact that you may not immediately realize that he has red skin.
- Winged Humanoid: When you've hired him to assist you he sprouts batlike wings in order to follow you.
Mini-bosses
A particularly powerful Zombie that only spawns during Blood Moons. It relies on contact damage and minions, and can fire damaging shockwaves in Expert Mode.
It drops two tomes at a guaranteed rate, and will uniquely be replaced by a weaker version of itself called the Abomination for all future encounters after it's killed.
- Flunky Boss: He regularly summons Blood Drops and Severed Legs. In Expert Mode, he also summons Famished Maggots and Zombies.
- Shout-Out: Shares DNA with the Abominations from World of Warcraft, being named after a boss from the Naxxramus raid and fulfilling a role similar to Stitches, a quest boss who must be defeated before he reaches the town of Darkshire.
- Unique Enemy: Once he's killed, he never appears in that world again.
A plant-like monster that lives in the Jungle. Relying on contact damage from its three mouths and bursts of flying minions, Corpse Bloom will not spawn again after it's been killed. Always drops a special staff for Healers.
- Flunky Boss: It summons an indestructible Corpse Weed when it reaches 75% and 25% health, and it regularly summons flying Corpse Petals.
- Unique Enemy: Once it's killed, it never appears in that world again.
The Illusionist spawns rarely anywhere in the Dungeon.The Illusionist will remain stationary, periodically teleporting to a new location in range of the player. It will occasionally fire an Illusion Glass at the player, which will travel through tiles and damage the player, inflicting the Darkness debuff. It will also summon two Illusionist's Mirrors, which will orbit around the Illusionist and attempt to deflect attacks back at the player, causing them to take damage.
Every 33% life lost will cause the Illusionist to summon an invulnerable decoy, up to two times, which will behave and attack like the original.
- Attack Reflector: It can summon two mirrors that orbit around it, reflecting attacks back at players.
- Dem Bones: Like every other enemy in the Dungeon.
- Flechette Storm: When under 33% health it gains an attack where it unleashes a barrage of magic glass shards at the player.
- Glowing Eyelights of Undeath: Its eyes glow blue, which is how you can tell it apart from its duplicates.
- Master of Illusion: It can blind the player and summon illusory duplicates.
- Teleportation: How it moves around.
Pre-Hardmode Bosses
A giant bird resembling a vulture, which is summoned in the daytime Desert and serves as the first mod-exclusive boss in Thorium. Meant to be fought before any other boss in the game, it uses quick ramming attacks, minions, and electric powers in combat.
Drops weapons based around the desert and lightning, as well as Sandstone Ingots for making basic equipment. Killing it will allow the Desert Acolyte NPC to move into any available housing.
- Attack Its Weak Point: When it's charging, striking it with a melee weapon will not only abruptly stop it mid-charge, but stun it for a second or so.
- Battle Theme Music: Grand Thunder Bird
. - Blow You Away: In Expert, it can attempt to drop thunderbolts on players, which will split into horizontally-moving whirlwinds on contact with a surface.
- Death or Glory Attack: This boss normally flies well past the reach of any melee weapon, which would make the fight unwinnable for dedicated melee users. On occasion, however, it flies low to the ground, level with the player, before charging at lightning speed. If the player, instead of trying to dodge, challenges it head on and strikes with a melee weapon at just the right moment, the boss will be stunned and take massive damage for several seconds.
- Flunky Boss: Summons Hatchlings to assist it during its battle.
- Giant Flyer: A bit smaller than the Eye of Cthulhu, but still quite large.
- Mythology Gag: It can sometimes drop the Ancient Storm Mask, which looks like the Grand Thunder Bird's old sprite.
- Shock and Awe: It isn't called the Grand Thunder Bird for no reason. In battle, it regularly calls lightning from the sky, shoots electric blasts, and even rains down lightning bolts that summon tornadoes in Expert.
- Thunderbird: As the name suggests.
- Warm-Up Boss: Considerably easier than even the King Slime, and the wide open, gentle curves of the desert that you naturally encounter it in makes for a useful arena without further intervention on the player's part.
Drops Pink Gel and a number of aquatic-themed items. The Diverman NPC will spawn from it after it is defeated for the first time.
- Color-Coded for Your Convenience: The three kinds of Royal Jellyfish she can summon are each a different color. Zealous Jellyfish are red, Distracting Jellyfish are blue, and Spitting Jellyfish are yellow.
- Combat Tentacles: In Expert Mode, it can grow several of these when below 45% life. They will extend and try to hit nearby players, dealing heavy contact damage.
- Floating in a Bubble: Getting struck by its bubble attack temporarily results in this, flinging you high into the air and potentially causing fall damage.
- Flunky Boss: Much of its power lies in the armies of Jellyfish it spawns. It summons Zealous Jellyfish that charge at players, Distracting Jellyfish that hover around it and block attacks, and Spitting Jellyfish that float above it while firing bubbles.
- Making a Splash: Fires bubbles to attack players, which launch them into the air.
- Tornado Move: Has a particular attack where it temporarily becomes stationary and produces a large tornado around itself, which sucks the player in and deals rapid contact damage.
A fancy-looking bat, and a Cavern boss that threatens with a wide arsenal of tricky attacks. Summoned by using 5 Unholy Shards at the altar in a Blood Chamber, which is an underground structure found somewhere in the world.
Drops bat-themed weapons and accessories.
- Bat Out of Hell: Is an oversized, multi-eyed, and strangely royal-looking bat.
- Battle Theme Music: Bat Ballad
- Bloody Murder: Has an attack where it attempts to rain down blood orbs on players.
- Death from Above: When below 75% HP, Viscount can start letting out shock waves that cause cascades of boulders to rain from the ceiling.
- Extra Eyes: Has four eyes.
- Flunky Boss: Summons Bitey Babies to help it.
- Forced Transformation: In Expert, Viscount has an attack used under 33% HP that temporarily transforms the player into a bat. While the player has a smaller hitbox and can fly during this state, they're rendered completely helpless as Viscount continues attacking.
- Ground Pound: Below 90% HP, it can slam the ground and emit a shockwave that Petrifies all grounded players.
- Life Drain: Every time one of its Bitey Babies damages a player, they will heal Viscount for 25 HP.
- Red Eyes, Take Warning
- Taken for Granite: Its ground pound attack Petrifies any players that are still on the ground when it lands.
- Our Vampires Are Different: It's clearly inspired by some depictions of vampires, being an aristocratic-looking giant bat that is summoned with blood shards.
A bizarre amalgamation of rock and energy, to be summoned in a Granite Cave right after Skeletron - although it can spawn by itself if you destroy a naturally spawning Unstable Energy Anomaly in said caves. Maintaining an orbiting barrier of coalesced energy, the Storm alternates between energy attacks and quick, physical rams.
Drops granite-themed weapons and accessories.
- Battle Theme Music: Eye of the Storm
- Energy Ball: Its primary attack besides charging. On Expert, this attack will fire faster if its shield is completely down at the time.
- Flunky Boss: Summons Coalesced Energy to protect itself in the form of an Orbiting Particle Shield. In Expert, it can also spawn Energy Conduits below 40% HP which fire lasers at players.
- Lightning Bruiser: It's reasonably bulky and hard-hitting, and despite normally moving at a leisurely pace, it can put on sudden bursts of speed.
- Orbiting Particle Shield: Periodically forms one out of Coalesced Energy, which becomes Encroaching Energy and chases players when initially destroyed. To make matters worse on Expert, any Coalesced Energy left over when it respawns its shield will be shot at the player for heavy damage.
- Shielded Core Boss: Well, the boss itself is just a core, with a periodically regenerating shield to protect it.
- Shock and Awe: Its non-physical attacks all revolve around energy and the like.
A boss resembling a winged Greek warrior, meant to be fought in a Marble Cave right after Skeletron - although it can spawn by itself if you kill a naturally-spawning Bizarre Rock Formation in said caves. Compared to the other bosses, the Buried Champion fights very much like a CPU-controlled player, flying around and unleashing a varied set of attacks which only changes as he loses health.
Drops bronze-themed weapons and accessories, and the only Wing available Pre-Hardmode if you're on Expert. Killing it also allows the Spiritualist NPC to move in.
- Battle Theme Music: A Hero No More
- Elemental Weapon: His bow can fire four types of arrows - normal, fire, ice, and poison. After killing him, you can get the Champion's Trifecta-Shot, which allows you to replicate this effect.
- Lightning Bruiser: Not only does he move fast, have a small hitbox, and hit like a truck, he's also far bulkier than he initially lets on.
- Me's a Crowd: When in his magic phase, he'll summon an invincible Fallen Champion that uses his sword attacks. In Expert, he'll summon a second one that uses his bow attacks - essentially making you have to fight all three of his forms at once.
- Mirror Boss: Their three phases generally coorespond with the three original Terraria classes: A melee phase, a ranged phase, and a magic phase.
- Multishot: His bow can either fire individual arrows or fire several at once to rain down on players.
- Razor Wind: Fires wind slashes as his sole ranged attack when using his sword.
- Recursive Ammo: In his magic phase, he can fire explosive balls that burst into more projectiles on impact.
- Spikes of Doom: Capable of summoning these underneath players while wielding his sword. They're marked beforehand by a golden glowing effect.
- Tennis Boss: Has an attack in his magic phase where he'll fire off three magic bursts toward the player. If the player hits them back with a broadsword, they'll be reflected, damaging either the Buried Champion or one of his Fallen Champions. Notably, this is the only way to kill the Fallen Champions.
- Winged Humanoid: He also drops his wings for Expert players, making them able to fly before reaching Hardmode.
A giant saucer from outer space, the Star Scouter is meant to be the final boss fought before the Wall of Flesh itself. Only summonable in Space, the Star Scouter threatens with a wide variety of devastating laser attacks.
Drops a number of powerful, space-themed weapons.
- Attack Its Weak Point: When it's flying low to the ground and preparing its death ray, striking it with melee attacks in this state will deal massive damage to it.
- Battle Theme Music: Interplanetary Harbinger
- Beam Spam: Its primary means of attack. It adds more beams to its arsenal as it loses health.
- Death Ray: Its main (and most iconic) attack, where it'll hover above the player before freezing and firing a laser beam down at them, which splits into 2 energy waves upon contact with a surface. While it gives fairly obvious tells before it fires, the beam hurts a lot.
- Flying Saucer: Looks the part.
- Homing Projectile: The Graviton Surges it fires below 70% HP will track players.
- Lightning Bruiser: Has an HP value to rival the Wall of Flesh itself, a massive arsenal of deadly beams to bombard you with, and very fast movement to boot.
- Power Glows: Its eye-core glows in certain patterns to indicate when it's about to use certain attacks.
- Recursive Ammo: Below half health, it'll begin shooting falling energy spheres that explode into more bolts on impact.
- Shielded Core Boss: When at 33% HP in Expert, it releases three elemental Scouter Cores to fight for it. While any of the cores live, the Star Scouter will take Scratch Damage, but it will also stop attacking.
- Turns Red: As it loses health, it'll slowly start adding more projectiles to its arsenal. At low health, it'll essentially be firing beams nonstop. Also, if one tries to hide from the Star Scouter, it'll start spamming Graviton Surges like a machine gun.
Hardmode Bosses
An icy arachnid that roams the tundra, the Borean Strider spawns naturally in Hardmode Blizzards - but its spawn rate can be greatly increased through the use of a Strider's Tear. Meant to be the first boss fought in Hardmode, the Strider utilizes both ranged and melee attacks in tandem, along with its constant spawning of minions.
Drops numerous icy weapons, and permanently enables the spawning of several high-level spider enemies upon its death.
- Battle Theme Music: Lost in the Blizzard
- Big Creepy-Crawlies: And a frozen one to boot.
- Flunky Boss: At half health, it'll spawn a number of Borean Hoppers as its abdomen ruptures. From then on, it'll start spawning Borean Hoppers and Borean Mytes to assist it.
- Impaled with Extreme Prejudice: In addition to trying to perform this with normal icicle shots, it has an attack where it'll unleash two crystalline shockwaves on either side of itself, which travel along surfaces and inflict major damage on contact. To make matters worse, it's a guaranteed Freeze.
- Kill It with Ice: Not only does it attack with numerous ice attacks, nearly all of its attacks inflict Frostburn, Chilled and/or Frozen.
- Shockwave Stomp: Every time it stomps, it'll send out blasts of icy mist that Chill and damage players.
- Shows Damage: Its abdomen gradually cracks as it takes damage, up until it shatters at half health.
A strange, cephalopodic creature hailing from another dimension, Coznix is meant to be fought before the Mechanical Bosses. Only summonable in the Underworld, Coznix uses highly destructive magic attacks together with melee rams, along with a second form in Expert Mode.
Drops demonic-themed items, and his death also triggers the generation of either Lodestone or Valadium Ore in your world.
- Battle Theme Music: A Sight to Behold, a remix of Boss 2 from the vanilla game.
- Casting a Shadow: Can unleash radial bursts of dark magic shockwaves below 80% HP.
- Death Ray: Its primary attack, an Eradication Beam that is fired fairly infrequently but deals major damage. In phase 2, it'll start to spam them instead.
- Eldritch Abomination: It couldn't be any different considering what Coznix is.
- Energy Weapon: Below 60% HP, it'll start summoning Void Gates that spam laser beams under them.
- Flunky Boss: Summons Enemy Beholders in its first form, which fire lasers.
- Playing with Fire: In its second form, it can periodically cause enormous tides of lava to erupt from underneath the players. The height of these lava waves will increase as Coznix nears death.
- Red Eyes, Take Warning: Well, one red eye, anyways.
A skeletal monster summonable at night, the Lich is meant to be fought right before Plantera. It threatens with numerous fire-based attacks, and can unveil its second form in Expert Mode.
- Battle in the Rain: Rain will always start to pour when it is summoned.
- Battle Theme Music: Harvest Night
- Eye Beams: One of its attacks is to rapidly fires flaming eye beams.
- Death from Above: One of its attacks summons a telegraphed rain of fireballs from the sky. It gets denser in his second phase.
- Our Liches Are Different: A massive, humanoid, seemingly legless skeleton with a variety of fire-based magical attacks.
- Playing with Fire: Most of its attacks involve some kind of fire magic.
- Pumpkin Person: He wears a pumpkin over his head during his first phase, and can also summon rings of flaming pumpkins to attack.
- Sinister Scythe: Pulls out a massive, green-and-orange one to attack the player with when it Turns Red.
- Soul Jar: In Expert Mode it can summon the Phylactery of a Thousand Souls, and becomes Nigh-Invulnerable until the Phylactery is destroyed. To further compound things, the Phylactery can both fight back and heal the Lich.
- Teleport Spam: One of its first phase attacks has it teleport around while shooting purple flaming pumpkins.
- Turns Red: When it falls below 40% health on Expert Mode, the Lich's mask and hood will be torn off and it pulls out a scythe, gaining significantly higher damage and speed alongside more attacks.
A crab-like being responsible for the choking pollution of the Aquatic Depths, meant to be fought right before Duke Fishron. It is summoned upon acquiring three Abyssal Shadows, which are dropped by Aquatic Hallucinations that spawn in the Aquatic Depths. Abyssion uses numerous projectile attacks and has several deadly forms, culminating in a final showdown on Expert.
Drops aquatic-themed equipment, and also makes the waters of the Aquatic Depths breathable upon its death.
- Battle Theme Music: Beneath the Depths
- Cyclops: Has only a single eye in the middle of its head.
- Defend Command: Abyssion will periodically retreat into its shell and become highly resistant to damage while firing rapid-fire shots. The effectiveness of its armor decreases as its shell breaks down over the fight.
- Flunky Boss: While below 55% life, Abyssion will start spawning five Abyssal Spawn every time it hides within its shell.
- Fragile Speedster: With each phase of the fight, more of its shell will break and allow it to move and attack faster, though with much less health and defense than its previous forms. Though since it is a boss it still has quite a lot of health, making this somewhat Downplayed.
- Making a Splash: When below 65% health, Abyssion will release large spinning whirlpools that deal massive damage to the player and knock them back.
- Turns Red: As Abyssion's health decreases it will steadily gain new attacks. At a specific health interval, it will break part of its shell and begin the next phase of the fight, attacking rapidly and dealing more damage. Expert Mode has another phase of the fight beyond that, where it completely breaks free of its shell, moves much faster, and deals more damage.
A trio of extremely dangerous primordial spirits capable of bringing about the end of Terraria. The final confrontation of the Thorium Mod, these three bosses are meant to be fought after the Moon Lord. Each one threatens with its own series of devastating attacks, and on Expert the battle will culminate in a final clash with their true form, the reality-warping Dream Eater.
The Primordials collectively drop the three primordial essences, responsible for crafting most of the Thorium Mod's endgame equipment. If the Dream Eater is defeated as well, it drops the Dormant Hammer, one of two ingredients to make the mod's ultimate weapon: Mjölnir.
Shared Tropes
- Battle Theme Music: World's End, shared by the main three.
- The Dream Eater instead gets Reality's End, a climactic remix of World's End.
- The Dream Eater instead gets Reality's End
- Elemental Embodiment: Aquaius and Slag Fury represent water and fire, while Omnicide is an embodiment of death.
- End of the World as We Know It: It's implied that this occurs if they aren't stopped, though due to Gameplay and Story Segregation nothing actually happens to your world.
- Final Boss: Of the Thorium Mod.
- Meaningful Rename: To match the mod's Norse-inspired theme, were formerly called The Ragnarok, with the Dream Eater being called Dying Reality. They were eventually retooled into the Primordials after the devs decided that 3 elemental spirits and a sentient omega symbol didn't exactly reflect the idea of what is basically the Norse apocalypse.
- Sequential Boss: In Expert Mode, The Dying Reality will appear after Omnicide, Slag Fury, and Aquaius are defeated.
- Turns Red: All of them become more dangerous as they lose HP. In addition, dealing too much damage to them too quickly will cause them to strengthen their defenses to compensate.
- Wolf Pack Boss: A variant. While all three will be summoned at once, they will take turns attacking you in a fixed order, and only one will be active at any time.
Aquaius, the Endless Tide
The Primordial spirit of water.
- Anti-Armor: Getting hit by one of the explosions from the Aquaius bubbles will inflict Broken Armor.
- Flunky Boss: Starts summoning Aquaius Bubbles at a certain point in the fight. These will try to ram players, and will also explode on death to deal damage.
- Making a Splash: As the name implies, all of its attacks are water-based. Its signature attack is to summon horizontally moving whirlpools that converge on the player.
- Turns Red: Its water bolt shotguns get wider as it loses health. As it takes damage, it will also start summoning minions, launching typhoons, and doing both simultaneously at low health.
Omnicide, the Life Defiler
The Primordial spirit of death.
- Anti-Regeneration: Omnicide permanently inflicts Moon Bite while it's the active Primordial, disabling lifesteal.
- Bullfight Boss: Omnicide's main attack is to repeatedly charge at the player, with its speed gradually picking up as it keeps chasing. Fortunately, its speed will reset once the player forces it to turn around.
- Deadly Forcefield: A variant of this. Below 1/3 HP, Omnicide can periodically summon a rotating barrier of skulls around the player, which will flash red and suddenly stagnate after a bit. Should the player run into this barrier when it stops, it deals massive damage.
- Death from Above: Below 2/3 HP, it can start summoning telegraphed rains of green blasts of energy from the sky.
- Sickly Green Glow: Glows a sickly green and is an entity that seems antithetical to life itself.
- Turns Red: Speeds up and gains new attacks as it loses health, such as summoning rains of green fireballs and a stagnating wall of skulls around the player.
Slag Fury, the First Flame
The Primordial spirit of fire.
- Playing with Fire: As the name implies, all of its attacks are fire-based and inflict the On Fire debuff.
- Turns Red: As it loses HP, its fire blasts intensify in frequency and eventually upgrade to a spread. It can also start firing spreads of more powerful flame pulses at 2/3 HP, and rings of homing fireballs at 1/3.
The Dream Eater
- The very fabric of reality is tearing at the seams!
In Expert Mode, upon defeat the three spirits of the Primordials will summon the the reality ending Dream Eater. It's the True Final Boss of the mod, and is fearsome enough to back up its title.
- All Your Powers Combined: In addition to its own attacks, it can call upon the powers of the three lesser Primordials to mimic their attacks, although it will significantly amplify their potency as well.
- It can call upon the power of Aquaius to summon a very large number of horizontal typhoons while summoning stronger versions of Aquaius' bubbles to assist it.
- It can call upon the power of Omnicide to call down a faster rain of purple energy blasts.
- It can call upon the power of Slag Fury to charge up and release a much denser and faster ring of homing blasts.
- Amazing Technicolor Battlefield: The background will pulse in every color of the rainbow once the Dream Eater awakens.
- Beam Spam: Its primary means of attacks when not mimicking the Primoridals is rapidly firing a three-shot spread of purple blasts while chasing the player. It can periodically fire more beams in more complex barrages.
- Damage Over Time: All of its attacks inflict Shadowflame to cause rapid HP loss.
- Lightning Bruiser: Chases fast, fires a lot of projectiles, and hits like a freight train on top of soaking up respectable amounts of damage.
- Orbiting Particle Shield: At the start of the fight, the Dream Eater will summon three orbiting layers of primordial energy to protect itself before attacking. These used to be able to block hits, but are now just visual.
- Purple Is Powerful: A purple omega symbol that uses purple attacks, and easily the strongest entity in the mod.
- Reality Warper: Its mere presence is said to tear apart reality, and it's clearly doing...something to the background when it starts fighting.
- Technicolor Death: Upon defeat, the Dream Eater will erupt into multicolored beams and explosions before finally disintegrating.
- True Final Boss: The Expert-exclusive final form of the Primordials, and the strongest enemy of the mod.
