| The Caves|
Normal Enemy (Later Floors)
| Boss Pool|
Chub charges at Isaac whenever in line of sight, dealing damage upon hit. Even when hitting Isaac, Chub will continue to charge until a wall is hit. When Isaac drops a bomb in front of a charging Chub, she will eat the bomb, freezing in place and being dealt damage to after a small delay.
Chub will occasionally spawn Chargers, which will chase Isaac whenever in line of sight.
- Orange: Smaller and faster than normal. Spawns Spitties instead of Chargers.
- Blue: Larger than normal. Spawns blue Boils instead of Chargers.
- If Chub is killed while frozen by Mom's Contacts, only the part to receive the last shot will die.