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Key Bum

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Item altar
  
  
  
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388
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Key Master Key Master
Secret Room Secret Room
Treasure Room Treasure Room
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Key Bum Defeat Ultra Greed as LazarusKey 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.
  • This item belongs to the Super BumSuper Bum App.pngReplaces Bum Friend Bum FriendBum Friend Rebirth Icon.pngA portable beggar who follows Isaac, picks up coins for himself, and occasionally drops a pickup after collecting a coin. Does not spawn collectibles., Dark Bum Dark BumDark Bum Rebirth Icon.pngSpawns a familiar that follows Isaac around and collects red hearts. For every one-and-a-half red hearts collected, Dark Bum will generate one soul heart, one hostile Spider or one friendly blue spider., andKey Bum Key BumKey Bum Afterbirth Icon.pngSpawns a portable key master that follows Isaac and collects keys, giving random chests in return. for Super Bum. This bum collects any of the other beggars' pickups, and offers twice the rewards. set. Collecting three items from this set will transform Isaac's bums into Super Bum.

Notes[edit | edit source]

Synergies[edit | edit source]

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

In-game Footage[edit | edit source]

Seeds[edit | edit source]

 PC  WJK1 9R0Z (Treasure Room adjacent to spawn)

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.


Lazarus Unlocks Lazarus Unlocks Lazarus Unlocks
Added in Afterbirth †
Missing No.Missing No.Complete the Boss Rush as LazarusLazarus' RagsLazarus' RagsDefeat Isaac as LazarusBroken AnkhBroken AnkhDefeat Satan as LazarusStore CreditStore CreditDefeat ??? as LazarusPandora's BoxPandora's BoxDefeat The Lamb as LazarusWrapped BabyWrapped BabyRemoved in Afterbirth † Defeat Mom's Heart on hard mode as Azazel
Added in Afterbirth † Defeat Mom's Heart on hard mode as LazarusBegotten BabyBegotten BabyRemoved in Afterbirth † Defeat Mom's Heart on hard mode as Lazarus
Added in Afterbirth † Defeat Mom's Heart on hard mode as Azazel 		Empty VesselEmpty VesselDefeat Hush as LazarusKey BumKey BumDefeat Ultra Greed as LazarusLong BabyLong BabyDefeat Mega Satan as LazarusDripping BabyDripping BabyEarn all hard mode completion marks as Lazarus Compound FractureCompound FractureDefeat Delirium as LazarusPlan CPlan CDefeat Ultra Greedier as Lazarus
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