Bosses

The Spirit Mod adds 8 new bosses and 4 minibosses to the game.

5 bosses are Pre-Hardmode, 3 are Hardmode. 2 minibosses are Pre-Hardmode and 2 are Hardmode.

In Expert Mode, these bosses have more health and deal more damage. They also drop Treasure Bags, containing unique, Expert Mode-exclusive items.

Pre-Hardmode

Scarabeus

Summoned with a Scarab Idol

Scarabeus

For elaborate strategies on defeating Scarabeus, including weapon and arena recommendations, see Guide:Scarabeus strategies.

Scarabeus is an armored scarab with 1,750 / 2,500 / 3,186 health. It tries to dash into the player, and summons scarabs to attack them. It can be summoned with a Scarab Idol in the desert, during the daytime.

Moon Jelly Wizard

Summoned with a Dreamlight Jelly

Moon Jelly Wizard

For elaborate strategies on defeating Moon Jelly Wizard, including weapon and arena recommendations, see Guide:Moon Jelly Wizard strategies.

The Moon Jelly Wizard is a playful group of Moon Jellies with 2,000 / 3,200 / 4,080 health that is intended to be fought after defeating the Eye of Cthulhu. It is summoned with a Dreamlight Jelly anywhere during the night. It rapidly dashes and dives at the player while casting various electric spells, as well as kicking out dreamlight bubbles and shooting Tiny Lunazoas at the player. Once defeated, the Moon Jellies hiding under its robes will flee as its hat falls to the ground.

The Moon Jelly Wizard drops a variety of weapons and armor pieces themed around the spells it casts during its encounter. It also drops the Cornucop-ion in Expert Mode, a classless weapon that can charge lightning bolts to be cast at nearby enemies for high damage.

Vinewrath Bane

Summoned with a Bramble Tooth

Vinewrath Bane

For elaborate strategies on defeating Vinewrath Bane, including weapon and arena recommendations, see Guide:Vinewrath Bane strategies.

Vinewrath Bane is a vine-clad monstrosity with 5,450 / 7,972 / 10,947 health, split over two phases. It employs a powerful dash, and can fire nature-themed projectiles at the player. It can be summoned with a Bramble Tooth in the underground Briar biome at any time.

Ancient Avian

Summoned with a Feather Crown

Ancient Avian

For elaborate strategies on defeating Ancient Avian, including weapon and arena recommendations, see Guide:Ancient Avian strategies.

The Ancient Avian is a skeletal harpy with 3,100 / 4,960 / 6,324 health. It flies above the player and fires projectiles at the player. It can be summoned with a Feather Crown in Space, or by breaking the Ancient Egg found in the nest on Avian Islands.

Starplate Voyager

Summoned with a Starplate Beacon

Starplate Voyager

For elaborate strategies on defeating Starplate Voyager, including weapon and arena recommendations, see Guide:Starplate Voyager strategies.

The Starplate Voyager is a galactic worm with 8,000 / 9,600 / 12,240 health. It fires electricity-themed projectiles at the player. It can be summoned with a Starplate Beacon at an Astralite Beacon in the Asteroid Fields.

Hardmode

Infernon

Summoned with a Pain Caller

Infernon

For elaborate strategies on defeating Infernon, including weapon and arena recommendations, see Guide:Infernon strategies.

Infernon is an infernal demon with 13,000 / 26,000 / 33,150 health. He is summoned by using a Pain Caller in The Underworld. Throughout the fight he flies above the player, rarely swooping down and firing projectiles. It summons the Infernus Skull once it gets to 7,000 health in Normal Mode, or at the start of the fight in Expert Mode. In Expert Mode, he has a second phase, with an additional 11,000 / 14,025 health.

Infernon drops weapons themed around fire and the underworld, as well as Torment Shards, which can be used to craft the Pain Monger armor. It drops the Infernal Pact in Expert Mode, which reduces defense to 0 but grants a universal 4% damage buff alongside 0.75% for every defense point lost.

Dusking

Summoned with a Dusk Crown

Dusking

For elaborate strategies on defeating Dusking, including weapon and arena recommendations, see Guide:Dusking strategies.

Dusking is a nightmarish skull with 21,000 / 42,000 / 53,550 health. It attacks by moving towards the player while flinging many projectiles at them, including a minion, the Antumbral Skull. He can be summoned with a Dusk Crown anywhere during the nighttime.

Atlas

Summoned with a Stone Fist

Atlas

For elaborate strategies on defeating Atlas, including weapon and arena recommendations, see Guide:Atlas strategies.

Atlas is a colossal rocky creature with 41,000 / 69,700 / 88,866 health. It shoots projectiles and summons Cobbled Eyes as its health depletes. It can be summoned with a Stone Fist anywhere, at any time.

Mini Bosses

Occultist

Summoned during a Blood Moon

Occultist

For elaborate strategies on defeating Occultist, including weapon and arena recommendations, see Guide:Occultist strategies.

Occultist is an undead necromancer that spawns during a Blood Moon. It summons Zombies and Blood Zombies simultaneously while occasionally summoning Dark Grasps that inflicts the Obstructed debuff. When summoned enemies have low health, it will kill them one at a time and heal itself for each one killed. It has 800 / 1,200 / 1,530 health and cannot be summoned manually.

R'lyehian

Summoned at the end of The Tide event

R'lyehian

For elaborate strategies on defeating R'lyehian, including weapon and arena recommendations, see Guide:R'lyehian strategies.

R'lyehian is a purple tidal spirit with 2,800 / 5,600 / 3,900 health. It flies and fires a multitude of projectiles. It spawns at the end of The Tide event in Pre-Hardmode.

Vulture Matriarch

Spawns natually in the Desert

Vulture Matriarch

For elaborate strategies on defeating Vulture Matriarch, including weapon and arena recommendations, see Guide:Vulture Matriarch strategies.

The Vulture Matriarch is a large bird that spawns naturally in the Desert during Hardmode, and like normal Vultures, it remains passive until approached. It floats above the player, shooting feathers, and diving down at them. It has 3,500 / 7,000 / 10,500 health and cannot be summoned manually.

Snow Monger

Summoned during a Frost Legion.

Snow Monger

For elaborate strategies on defeating Snow Monger, including weapon and arena recommendations, see Guide:Snow Monger strategies.

The Snow Monger is an enormous robotic machine controlled by a Penguin that spawns during the Frost Legion. It floats above the player, shooting ice blasts, ice beams, and lunging at them. It has 5,600 / 11,200 / 14,280 health and cannot be summoned manually.