Binding of Isaac: Rebirth Wiki

Peep is a boss that can appear in all environments of Chapter 2 (Caves Caves, Catacombs Catacombs, Added in Afterbirth Flooded Caves Flooded Caves).


  • Creates puddles of Yellow Creep around him.
  • Fires eight yellow projectiles in all directions with varying orientation.
  • Jumps into the air and travels a moderate distance in Isaac's direction, sending out a ring of twelve yellow projectiles upon landing.
  • Peep's eyeballs dislocate and start floating around the room at specific points in his health. One pops off at 2/3rds, and the other pops off at 1/3rd.
    • Peep's eyeballs float diagonally bouncing off of walls and do not take damage. They block Isaac's tears and inflict contact damage.

Peep deals a whole heart of contact damage.

Champion Versions Needs to be unlocked[]

Dark Cyan: Starts the battle with both his eyes popped out, similar to The Bloat The Bloat.
Yellow: 15% smaller, moves faster, and leaves a constant trail of Yellow Creep.




  • Peep appeared in the original The Binding of Isaac.
  • Peep's name could come from the word "pee", which could allude to Peep urinating yellow creep while battling.
    • Peep's name could also be a shortened version of "peeper", which is slang for an eye.
  • His posthumous version is The Bloat.
  • He has 3 unused sprites in his spritesheet that were removed in The Bloat spritesheet.
  • Added in RepentanceYellow Peep's pupils diverge slightly, resembling Added in Afterbirth †Acid Baby Acid Baby.


Bug Bug! Removed in Repentance Peep's Eyes have the same collision radius as Peep itself, which results in the eyes being difficult to dodge since the hitbox doesn't match up with the eyes' visual size.