Binding of Isaac: Rebirth Wiki

Added in Afterbirth †

Bozo is an unlockable passive item added in The Binding of Isaac: Afterbirth † (Booster Pack #1).



  • None of the above effects are affected by luck.


  • Added in RepentanceBlood Oath Blood Oath: Each half-heart lost has a chance of spawning a rainbow poop, allowing for full red heart regeneration.
  • IV Bag IV Bag: Each use has a chance of spawning a rainbow poop.
  • With max red hearts, The Wafer The Wafer, and careful timing to get the maximum healing from each rainbow poop, Isaac's effective health pool could be extremely high.

In-game Footage[]



  • Bozo is based on this Steam Workshop item by electoon.
  • This item is a reference to Bozo the Clown, a clown character whose broad popularity peaked in the 1960s.
  • The item's ability to inflict fear may be a reference to coulrophobia, the fear of clowns.
  • If you die with Red Heart containers and enemies destroy the rainbow poop in time, your hearts will fill up again, still leaving you dead.
  • This item shares a description with the item Added in RepentanceFree Lemonade Free Lemonade.


PC Added in Repentance DYPL LHPA (Treasure room south of spawn)

PC Added in Repentance FLDW T0FP (Treasure room adjacent to spawn)

Switch Greedier mode only BFDK 6SG8 (First Golden Treasure Room)

XboxOne Normal mode only HRX7 BFY4 (Treasure Room Adjacent To Spawn)

PS4 Added in Repentance R072 ZQC1 (Treasure room adjacent of spawn)