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The Underworld

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The Underworld features 1 new Pre-Hardmode enemy and 6 new Hardmode enemies, one of which being a new mimic, the Hell Bringer Mimic. Additionally you are required to be in the underworld to summon Coznix, The Fallen Beholder.

Content[edit | edit source]

The Underworld
Characters Unique Treasures Unique Drops
Fiery Hag.pngHag

In Hardmode:

Bone Flayer.pngBone Flayer
Underworld Pot Mimic.pngUnderworld Pot Mimic
Infernal Hound.pngInfernal Hound
Molten Mortar.pngMolten Mortar
Hell Bringer Mimic.pngHell Bringer Mimic
Coznix, The Fallen Beholder.pngCoznix, The Fallen Beholder(boss)
Enemy Beholder.pngEnemy Beholder(From Coznix, The Fallen Beholder)

After any Mechanical Boss has been defeated:

Molten Boulder Mimic.pngMolten Boulder Mimic

From locked Shadow Chests (alongside normal items):



Bone Flayer Banner.pngBone Flayer Banner
Underworld Pot Mimic Banner.pngUnderworld Pot Mimic Banner
Infernal Hound Banner.pngInfernal Hound Banner
Molten Mortar Banner.pngMolten Mortar Banner

From any enemy:

Abyssal Whistle.pngAbyssal Whistle

From any enemy in Hardmode:

Molten Residue.pngMolten Residue
Underworld Key.pngUnderworld Key(from any enemy, 1/2500 chance)

From Bone Flayers:

Bone Flayer Tail.pngBone Flayer Tail

From Underworld Pot Mimics:

Hot Pot.pngHot Pot

From Infernal Hounds:

Molten Collar.pngMolten Collar

From Molten Mortars:

Mortar Staff.pngMortar Staff

From Hell Bringer Mimics:

Devil Dagger.pngDevil Dagger
Devil's Reach.pngDevil's Reach

From Coznix, The Fallen Beholder:

Thermogenic Impaler.pngThermogenic Impaler
Demon Fire Blast-Wand.pngDemon Fire Blast-Wand
Devil's Carapace.pngDevil's Carapace
Void Planter.pngVoid Planter
Mirror of the Beholder.pngMirror of the Beholder
Tome of the Void Gazer's Chariot.pngTome of the Void Gazer's Chariot
Beholder Mask.pngBeholder Mask
Fallen Beholder Trophy.pngFallen Beholder Trophy
Beholder Staff.pngBeholder Staff(in Expert mode only)

From Molten Boulder Mimics:

Surtr's Sword.pngSurtr's Sword

Notes[edit | edit source]

Surface Layers Desert • Ocean • Snow • Surface • The Corruption • The Crimson • The Hallow
Underground Layers Aquatic Depths • Cavern • Underground Desert • Underground Hallow • Underground Jungle • Underground Snow • The Underworld
Special Biomes and Structures Blood Chamber • Dungeon • Floating Island • Granite Cave • Lihzahrd Temple • Marble Cave • Meteorite • Mushroom Biome • Spider Nest