Teratoma

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Boss Teratoma name.png
Boss versus screen image
Base HPStage HP
60
0
Table dividing line 1.png
Ingame Appearance
In-game appearance

Entity ID
71.1
Table dividing line 2.png
Found In
Boss
Removed in Repentance
Stage The Womb icon.pngStage Utero icon.pngStage Scarred Womb icon.png
Stage The Void icon.png
Added in Repentance
Stage Utero icon.png
Stage The Void icon.png
Degraded Boss
Small
Stage The Catacombs icon.png
Stage Necropolis icon.png
Stage Sheol icon.png
Medium
Stage The Catacombs icon.png
Stage The Depths icon.pngStage Necropolis icon.pngStage Dank Depths icon.png
Stage Sheol icon.png
Stage Dark Room icon.png
Stage Corpse icon.png
Large
Stage Sheol icon.png
Stage The Chest icon.pngStage Dark Room icon.png
Stage Corpse icon.png
Table dividing line 3.png
Dropped Items
Boss Boss

Teratoma is a boss that can appear:


The large Teratoma has 60 HP, the medium forms have 15 HP, and the small forms have 8 HP.

Behavior[edit | edit source]

  • Moves around the room slowly, bouncing off the walls.
  • When enough health is depleted, the one large Teratoma breaks into three medium Teratomas.
    • Medium forms behave identically, but move slightly faster.
  • Each of the three medium Teratomas breaks into two small Teratomas.
    • Small forms behave identically, but move very fast.
  • Each of the smallest Teratomas spawns two Spiders on defeat unless they are over a pit or other obstacle.

Gallery[edit | edit source]

Trivia[edit | edit source]

  • Teratoma was added in the Wrath of the Lamb DLC for the original The Binding of Isaac.
  • It is the posthumous form of Fistula.
  • A teratoma is a tumor that contains tissues that are atypical for its placement in the body. This can include hair, teeth, bones, and so on.
  • Unlike the original Binding Of Isaac, Teratoma doesn't bounce off of Rocks.
  • Teratoma is one of the four bosses that can be spawned by It Lives, the other three being Fistula (as of Repentance), Chub and Polycephalus.



Bosses Boss Monstro.png
Chapter 1
Stage The Basement icon.pngStage The Cellar icon.pngStage Burning Basement icon.png
GeminiStevenBlighted OvumDingleThe Duke of FliesFamineGurglingsThe HauntLarry Jr.MonstroPinWidowThe FallenThe Headless Horseman
DangleLittle HornRag ManTurdlings
Baby Plum
Chapter 1.5
Stage Downpour icon.pngStage Dross icon.png
Lil BlubWormwoodThe RainmakerMin-MinClogColostomiaTurdlet
Chapter 2
Stage The Caves icon.pngStage The Catacombs icon.pngStage Flooded Caves icon.png
FistulaChubC.H.A.D.Carrion QueenDark OneGurdyGurdy Jr.The HollowThe HuskMega FattyMega MawPeepPestilencePolycephalusThe WretchedThe FallenThe Headless Horseman
The ForsakenThe FrailThe Stain
Big HornRag Mega
Bumbino
Chapter 2.5
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Chapter 3
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The AdversaryThe BloatThe CageThe GateMonstro IIGishLokiMask of InfamyWarThe FallenThe Headless HorsemanMom
Brownie
Sisters Vis
Reap CreepThe Pile
Chapter 3.5
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The SirenThe HereticThe VisageThe Horny BoysMomMom's Heart
Chapter 4
Stage The Womb icon.pngStage Utero icon.pngStage Scarred Womb icon.png
BlastocystThe BloatConquestDaddy Long LegsTriachnidDeathLokiiMama GurdyMr. FredScolexTeratomaThe FallenThe Headless HorsemanMom's HeartIt Lives
Sisters VisThe Matriarch
???
???
Hush
Corpse
Stage Corpse icon.png
ChimeraThe ScourgeRotgutMother
Chapter 5
Stage Sheol icon.pngStage Cathedral icon.png
SatanIsaac
Chapter 6
Stage Dark Room icon.pngStage The Chest icon.png
???The LambMega Satan
The Void
Stage The Void icon.png
Delirium
Home
Stage Home icon.png
DogmaThe BeastUltra DeathUltra FamineUltra PestilenceUltra War
Greed Mode
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Ultra Greed
Ultra Greedier
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