Key Bum

Key Master Secret Room Treasure Room

(page 4, column 3, row 2)(page 4, column 3, row 2)

Defeat Ultra Greed as LazarusKey Bum

Key Bum is an unlockable passive item added in Afterbirth.

Effects

• Spawns a familiar that follows Isaac around and collects keys, dropping random Chests in return.

Notes

• Key Bum will not pick up golden keys.
• Key Bum will pick up charged keys without additional benefit.

Synergies

• BFFS!Increases the size and damage of familiars.: Familiar is bigger and drops chests more often.

Bugs

Bug! 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.

Seeds

 PC  WJK1 9R0Z (Treasure Room adjacent to spawn)

Lazarus Unlocks
Missing No.Complete the Boss Rush as LazarusLazarus' RagsDefeat Isaac as LazarusBroken AnkhDefeat Satan as LazarusStore CreditDefeat ??? as LazarusPandora's BoxDefeat The Lamb as LazarusWrapped Baby Defeat Mom's Heart on hard mode as Azazel Defeat Mom's Heart on hard mode as LazarusBegotten Baby Defeat Mom's Heart on hard mode as Lazarus Defeat Mom's Heart on hard mode as Azazel	Empty VesselDefeat Hush as LazarusKey BumDefeat Ultra Greed as LazarusLong BabyDefeat Mega Satan as LazarusDripping BabyEarn all hard mode completion marks as Lazarus	Compound FractureDefeat Delirium as LazarusPlan CDefeat Ultra Greedier as Lazarus