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

Entity ID
Table dividing line 2.png
Found In
Stage Dross icon.png
Table dividing line 3.png
Dropped Items
Boss Boss
Added in Repentance

Colostomia is a boss introduced in The Binding of Isaac: Repentance and can appear in Dross Dross.

Behavior[edit | edit source]

Phase 1[edit | edit source]

  • Hops in place and then immediately performs a slide a with slight shift toward Isaac, firing projectiles in both perpendicular directions as it moves and leaving trails of explosive gas.
    • Colostomia performs this attack 1 to 3 times in a row
    • The direction of the slide depends on the player's position, which can be used to trick Colostomia into moving in specific directions.
    • The vertical slide is usually easier to avoid, as the boss spawns less bullets and they also travel less distance.
  • Throws a Butt Bomb toward Isaac that can ignite the gases, which kill over time, around to cause a chain explosion.
    • This is always its first attack when spawning.
    • Unlike Isaac's Butt Bombs, these do not create a damaging cloud.

Phase 2[edit | edit source]

After taking enough damage, the bag containing Colostomia explodes and leaves it adhering to the floor.

  • Jumps to another nearby location, firing 8 projectiles in a radial burst and creating a puddle of harmful brown creep when it lands.
  • Spews two Butt Bombs at Isaac.
  • Farts, creating a ring of explosive gas around its location

Gallery[edit | edit source]

Trivia[edit | edit source]

  • Colostomia is based on a Colostomy bag, a removable, disposable bag that attaches to the exterior opening of a colostomy to permit sanitary collection and disposal of bodily wastes.