Every time Isaac gives him a bomb, there is a chance for the Bomb Bum to drop 1-2 bomb pickups or give out a kind of bomb-related item (like Butt Bombs or Pyro). When he gives out a collectible item, the Bomb Bum will disappear and will not be able to take any more bombs.
- Bomb Bums may spawn a Troll Bomb underneath themselves.
| Isaac • Magdalene • Judas • Cain • Eve • Samson • ???|
|Babies • Beggar • Devil Beggar • Key Beggar • Shell Game Beggar • Bomb Bum • Shopkeeper • Others|
|Old Man Keeper|