Fistula

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Fistula
Boss Fistula.png
Base HP
Large: 60
Medium: 15
Small: 8
Stage HP
0
Found In
Boss
Stage cellar.png
Challenge Room Icon.pngBoss Challenge Room Icon.pngSuper Secret Room Icon.png
Mini-Boss
Small
Stage caves.pngStage flooded caves.png
Stage depths.pngStage dank depths.png
Stage scarred womb.png
Medium
Stage depths.pngStage necropolis.pngStage dank depths.png
Stage womb.pngStage utero.pngStage scarred womb.png
Stage chest.pngStage dark room.png
Large
Stage womb.pngStage utero.pngStage scarred womb.png
Stage cathedral.pngStage sheol.png
Stage chest.pngStage dark room.png
Dropped Items
Boss Boss  

Fistula is a boss that can appear in the Cellar.

Behavior[edit | edit source]

  • Moves around the room slowly, bouncing off the walls.
  • When enough health is depleted, the one large Fistula breaks into four medium Fistulas.
  • Each of the four medium Fistulas break into two small Fistulas.
  • After the smallest Fistulas are defeated, they spawn Chargers unless they are over a pit or other obstacle.
  • All stages of Fistula will do 1 red heart of contact damage.

Champion Versions[edit | edit source]

  • Black: Spawns Boom Flies instead of Chargers. Each piece travels much slower, and splits into three medium Fistulas as opposed to the original's four.

Gallery[edit | edit source]

Trivia[edit | edit source]

  • Fistula appeared in the original Binding of Isaac.
  • A fistula is an abnormal connection between organs, intestines, and other tissues.
  • Fistula used to be a Caves/Catacombs boss in the original "Binding of Isaac", but as of Rebirth, it is a Cellar boss.
  • Teratoma is the posthumous version of Fistula.
  • Unlike the original "Binding Of Isaac", Fistula doesn't bounce off of Rocks.
  • Fistuloid is an enemy variant of this boss combined with what looks to be a Charger or Spitty.
  • The Matriarch is a boss added in Booster Pack #5 that is simultaneously based of a Fistuloid, Chub, and this boss. The Matriarch will also spawn small Fistulas throughout the battle.
Bosses Boss Monstro.png
Chapter 1 Blighted OvumDingleThe Duke of FliesFamineFistulaGeminiGurglingsThe HauntLarry Jr.MonstroPinStevenWidow
Added in Afterbirth DangleLittle HornRag ManTurdlings
Chapter 2 C.H.A.D.ChubDark OneGurdyGurdy Jr.The HollowThe HuskMega FattyMega MawPeepPestilencePolycephalusCarrion QueenThe Wretched
Added in Afterbirth The ForsakenThe FrailThe Stain
Added in Afterbirth † Big HornRag Mega
Chapter 3 The AdversaryThe BloatThe CageThe GateGishLokiMask of InfamyMonstro IIWarMom
Added in Afterbirth Brownie
Added in Afterbirth † Sisters Vis
Chapter 4 BlastocystThe BloatConquestDaddy Long LegsDeathIt LivesLokiiMama GurdyMom's HeartMr. FredScolexTeratomaTriachnid
Added in Afterbirth † Sisters VisThe Matriarch
Added in Afterbirth Blue Womb Added in Afterbirth Hush
Chapter 5 SatanIsaac
Chapter 6 ???The LambMega Satan
Added in Afterbirth Greed Mode Added in Afterbirth Ultra Greed
Added in Afterbirth † Ultra Greedier
Added in Afterbirth † The Void Added in Afterbirth † Delirium
Chapters 1-4 The FallenThe Headless Horseman


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