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Teratoma

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Boss Teratoma name.png
Boss versus screen image
 
 
Table dividing line 1.png
 
In-game appearance
Table dividing line 2.png
 
Boss
Stage womb.pngStage utero.pngStage scarred womb.png
Stage the void.png
Degraded Boss
Small
Stage catacombs.pngStage necropolis.pngStage sheol.png
Medium
Stage catacombs.pngStage depths.pngStage necropolis.pngStage dank depths.pngStage sheol.pngStage dark room.png
Large
Stage sheol.pngStage chest.pngStage dark room.png
Table dividing line 3.png
 
Boss Boss

Teratoma is the posthumous version of Fistula that can appear in all environments of Chapter 4.

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 with 15 HP each.
  • Each of the three medium Teratomas break into two small Teratomas with 8 HP each.
  • After the smallest Teratomas are defeated, they spawn two Spiders 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.
  • A teratoma is a tumor that contains tissues which are atypical for its placement in the body. This can include hair, teeth, bones, and so on.
  • Unlike other posthumous bosses, Teratoma is found 3 chapters away from its base boss, Fistula.
  • Unlike the original Binding Of Isaac, Teratoma doesn't bounce off of Rocks.
  • Teratoma is one of the three bosses that can be spawned by It Lives, the other two being Chub and Polycephalus.



Bosses Boss Monstro.png
Chapter 1
Stage basement.png
Stage cellar.png
Stage burning basement.png
Blighted OvumDingleThe Duke of FliesFamineFistulaGeminiGurglingsThe HauntLarry Jr.MonstroPinStevenWidow
Added in Afterbirth DangleLittle HornRag ManTurdlings
Chapter 2
Stage caves.png
Stage catacombs.png
Stage flooded caves.png
Carrion QueenC.H.A.D.ChubDark OneGurdyGurdy Jr.The HollowThe HuskMega FattyMega MawPeepPestilencePolycephalusThe Wretched
Added in Afterbirth The ForsakenThe FrailThe Stain
Added in Afterbirth † Big HornRag Mega
Chapter 3
Stage depths.png
Stage necropolis.png
Stage dank depths.png
The AdversaryThe BloatThe CageThe GateGishLokiMask Of InfamyMonstro IIWarMom
Added in Afterbirth Brownie
Added in Afterbirth † Sisters Vis
Chapter 4
Stage womb.png
Stage utero.png
Stage scarred womb.png
BlastocystThe BloatConquestDaddy Long LegsDeathLokiiMama GurdyMr. FredScolexTeratomaTriachnidMom's HeartIt Lives
Added in Afterbirth † Sisters VisThe Matriarch
Added in Afterbirth Blue Womb
???
Added in Afterbirth Hush
Chapter 5
Stage sheol.png
Stage cathedral.png
SatanIsaac
Chapter 6
Stage dark room.png
Stage chest.png
???The LambMega Satan
Added in Afterbirth Greed Mode
Ultra Greed
Added in Afterbirth Ultra Greed
Added in Afterbirth † Ultra Greedier
Added in Afterbirth † The Void
Stage the void.png
Added in Afterbirth † Delirium
Chapters 1-4 The FallenThe Headless Horseman
The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth The Binding of Isaac: Rebirth
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