Key Bum

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Item icon
Item altar

 
 
 
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Item Pool Treasure Room.png Treasure Room
Item Pool Secret Room.png Secret Room
Item Pool Key Master.png Key Master
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Key Bum Defeat Ultra Greed as Lazarus
Key BumKey Bum
Added in Afterbirth

Key Bum is an unlockable passive item added in Afterbirth.

Effects[edit | edit source]

  • Spawns a familiar that follows Isaac around and collects keys, dropping random Chests in return.
  • Added in Afterbirth This item belongs to the Super Bum set. Collecting all three items in this set will grant a Super Bum familiar.

Notes[edit | edit source]

Interactions[edit | edit source]

  • BFFS! BFFS!
    BFFS! Icon.pngIncreases the size and damage of familiars.
    : Familiar is bigger and drops chests more often.
  • Added in Afterbirth † Duct Tape Duct Tape
    Duct Tape Icon.pngStops Isaac's familiars from moving.
    : Familiar will stay in place relative to Isaac.
  • Added in Afterbirth † Extension Cord Extension Cord
    Extension Cord Icon.pngBeams of yellow electricity flow between Isaac and his familiars, damaging any enemies between them.
    : Familiar will occasionally be connected to Isaac via electricity.

Bugs[edit | edit source]

Bug 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 Bug! Charged Keys do not increment Key Bum's key count when picked up.

In-game Footage[edit | edit source]

Seeds[edit | edit source]

 PC  WJK1 9R0Z (Treasure Room adjacent to spawn)


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