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#388Key Bum"He wants your keys!"Familiar
Spawns a familiar that follows Isaac and collects keys. It has a 20% chance of dropping a random chest upon collecting a key.

Picking up a Charged Key will make Key Bum spawn a Lil' Battery.

Key Bum cannot pick up Golden Keys.
This item contributes towards the Super Bum transformation. Collecting 3 items from this set will transform Isaac's bums into Super Bum, a familiar that collects coins, red hearts and keys, and drops twice as many rewards.
Unlock: Defeat Ultra Greed as Lazarus.
- Tags -- Synergies - - Links -

▾ITEMS ()▾

D infinity Dogma Jar of Wisps Flip Everything Jar

▾TRINKETS ()▾


▾PICKUPS ()▾

Heart Heart (half) Heart (soul) Heart (eternal) Heart (double) Black Heart Gold Heart Heart (half soul) Scared Heart Blended Heart Bone Heart Rotten Heart Penny Nickel Dime Double Penny Lucky Penny Sticky Nickel Golden Penny Key Golden Key Key Ring Charged Key Golden Bomb Golden Troll Bomb Giga Bomb Mega Chest Mom's Chest Mega Battery Golden Battery

▾CONSUMABLES ()▾

Hagalaz Jera Ehwaz Dagaz Ansuz Perthro Berkano Algiz Golden Pill Golden Horse Pill


▾MACHINES/BEGGARS ()▾

Slot Machine Blood Donation Machine Fortune Telling Machine Beggar Devil Beggar Shell Game Key Master Donation Machine Bomb Bum Shop Restock Machine Greed Donation Machine Mom's Dressing Table Battery Bum Hell Game Crane Game Confessional Rotten Beggar

▾CHARACTERS ()▾

Magdalene Samson Azazel Lilith Bethany Tainted Magdalene Tainted Eve Tainted Lazarus Tainted Lilith Tainted Bethany

▾TRANSFORMATIONS ()▾

Fun Guy Conjoined Leviathan

▾CURSES ()▾




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Added in DLC
Unlockable Grants costume Has YouTube video Animated icon