Key Bum is an unlockable passive item added in Afterbirth.
- Spawns a familiar that follows Isaac around and collects keys, dropping random Chests in return.
- This item belongs to the Super Bum set. Collecting three items from this set will transform Isaac's bums into Super Bum.
- BFFS!Increases the size and damage of familiars.: Familiar is bigger and drops chests more often.
If Credit Card
is used in a Shop
with keys, Key Bum will not be able to pick up the free keys. This can be fixed if Isaac leaves and re-enters the shop.
Bug! Charged Keys
do not increment Key Bum's key count when picked up.
PC WJK1 9R0Z (Treasure Room adjacent to spawn)