Bestiary Boss Butch!

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Bosses are very strong monsters found in Boss Rooms at the end of a floor.

Boss Butch! adds 13 bosses into The Binding of Isaac: Repentance.

This page is about Bosses added in Boss Butch!. More information about Bosses in general can be found in the vanilla page.

Bosses

Chapter 1

Sparky

Bart

Radical Rat

Chapter 1.5

The Mirage

Scatman

Chapter 2

Mozzie

Chapter 2.5

Dust Devil

Chapter 3

Papa Plum

Tarbacadabra

Chapter 3.5

Mournmurus

Chapter 4

Tulip

Duke Bloat

Chapter 4.5

Brainrot