The Lunatic Cultist is a boss that spawns after killing the four Ancient Cultists that spawn at the entrance to the Dungeon after killing the Golem, but if the floor of the dungeon entrance has been altered the cultists will not spawn. Defeating the Lunatic Cultist triggers the Celestial Event. After you defeat the Lunatic Cultist, the Clothier will sell the Solar Cultist Hood and Solar Cultist Robe during the day, and the Lunar Cultist Hood and Lunar Cultist Robe during the night. After Lunatic Cultist is defeated a message will appear saying Celestial Creatures are invading!. This indicates that the Celestial Event has started.


The cultist starts off by warping to a new location and then unleashing one of three attacks: A burst of three homing fire balls which will explode on impact, an ice ball which emits ice shards in six directions as it flies, and an energy orb which fires bolts of lightning to player. These are Lunatic Cultist's direct form attacks.

As Lunatic Cultist gets damaged, it will begin attacking with two spreads of five destructible ancient light projectiles as part of his previous cycle.

Occasionally, Lunatic Cultist will attempt to spawn illusory duplicates of itself. Unless the summoning ritual is interrupted by attacking the Lunatic Cultist and not one of the illusions. The Lunatic Cultist will have a golden stripe on his head piece, and a shine in his eye(causes an 'L' shape), whereas the illusions won't. These phantoms will stay, flying in formation and adding their homing Shadowflame attacks to Lunatic Cultist's. This will also result in the summoning of a Wyvern-like Phantasm Dragon, and if there is already a Phantasm Dragon inbound, an Ancient Vision, which looks like a miniature version of the Moon Lord's head. These phantom duplicates can be eliminated by interrupting the ritual again, but if not, the Lunatic Cultist can amass a large quantity of phantoms, making the fight much more difficult.

The Lunatic Cultist will go through an attack cycle between each summoning ritual, performing four or five attacks before proceeding. This cycle is repeated throughout the battle, and can become chaotic unless the Lunatic Cultist's summoning rituals are properly interrupted.

Also, in Expert Mode, the Lunatic Cultist will spawn ancient devices which shoot 4 purple projectiles after a while.


  • This is the smallest boss in the game, being only 3 blocks tall. Because of this, it is recommended to use homing weapons or Yo-Yos if possible.
  • If the player fails the battle, The Cultists will not re-appear until the next in-game day.


  • If you make any of the cultists despawn, the Lunatic Cultist will not be able to spawn (fixed by restarting the game)

Update Info


  • Added to the game.
Monsters (Hardmode Monsters are in italic)
Slime Monsters Baby Slime · Black Slime · Blue Slime · Corrupt Slime · Crimslime · Dungeon Slime · Green Slime · Hoppin' Jack · Ice Slime · Illuminant Slime · Jungle Slime · Lava Slime · Mother Slime · Pinky · Purple Slime · Red Slime · Sand Slime · Shadow Slime3DS · Slimeling · Slimer · Spiked Ice Slime · Spiked Jungle Slime · Toxic Sludge · Umbrella Slime · Yellow Slime
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Undead Monsters Angry Bones · Armored Skeleton · Big Boned · Blue Armored Bones · Bone Lee · Dark Caster · Doctor Bones · Heavy Skeleton · Hell Armored Bones · Rusty Armored Bones · Short Bones · Skeleton · Skeleton Archer · Skeleton Commando · Skeleton Sniper · Tactical Skeleton · The Groom · Tim · Undead Miner · Undead Viking · Vampire Miner3DS · Zombie
Humanoids Chaos Elemental · Clown · Dark Mummy · Light Mummy · Mummy · Nymph · Possessed Armor · Shadow Mummy3DS Spectral Elemental3DS · Spectral Mummy3DS · Werewolf
Mages Dark Caster · Fire Imp · Goblin Sorcerer · Tim · Rune Wizard · Desert Spirit
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Burrowing Monsters Bone Serpent · Devourer · Digger · Giant Worm · World Feeder · Tomb Crawler · Dune Splicer
Flying Monsters Angry Nimbus · Antlion Swarmer · Arch Demon3DS · Big Eater · Big Stinger · Bird · Cave Bat · Corruptor · Crimera · Crimson Axe · Cursed Hammer · Cursed Skull · Demon · Demon Eye · Dragon Hornet3DS · Dragon Skull3DS · Dragon Stinger3DS · Drippler · Eater of Souls · Enchanted Sword · Floaty Gross · Flying Fish · Gastropod · Ghost · Giant Bat · Giant Cursed Skull · Giant Flying Fox · Harpy · Hellbat · Hornet · Ice Bat · Ichor Sticker · Illuminant Bat · Jungle Bat · Lava Bat · Little Eater · Little Stinger · Meteor Head · Moss Hornet · Pixie · Raven · Red Devil · Shadow Hammer3DS · Spectral GastropodConsole · Voodoo Demon · Vulture · Wandering Eye · Wraith
Swimming Monsters Angler Fish · Arapaima · Blue Jellyfish · Corrupt Goldfish · Crimtane Goldfish · Goldfish · Green Jellyfish · Orca3DS · Pink Jellyfish · Piranha · Shark · Squid
Hopping Monsters Bunny · Corrupt Bunny · Crimtane Bunny · Derpling · Giant Shelly · Giant Tortoise · Herpling · Ice Tortoise · Mimic · Slimes
Mini-Boss Monsters Arch Wyvern3DS · Dreadnautilus · Wyvern
Boss Monsters Brain of Cthulhu · Duke Fishron · Eater of Worlds · Eye of Cthulhu · King Slime · Empress of Light · Queen Slime · Golem · Ocram3DS · Plantera · Queen Bee · Skeletron · Skeletron Prime · The Destroyer · The Twins · Wall of Flesh · Mourning Wood · Pumpking · Everscream · Santa-NK1 · Ice Queen · Martian Saucer · Lunatic Cultist · Nebula Pillar · Solar Pillar · Stardust Pillar · Vortex Pillar · Moon LordFinal Boss
Boss-Related Monsters Dungeon Guardian · Leech · Probe · Servant of Cthulhu · Servant of Ocram3DS · The Hungry
Immortal Blazing Wheel · Spike Ball
Projectile Burning Sphere · Chaos Ball
Other Albino Antlion3DS · Angry Tumbler · Antlion · Antlion Charger · Antlion Swarmer · Crab · Crawdad · Jungle Creeper · Mr. Stabby · Salamander · Snow Balla · Snowman Gangsta · Unicorn
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