Big Chubby
ItemAfterbirth+Unlocked
familiarGame ID 473★★★★
How do you unlock Big Chubby?
Verified starting unlockSource data confirms that no unlock is required.
Spawns a familiar that follows Isaac and charges across the room when Isaac fires, blocking shots and dealing 40.5 damage per second on contact.
Available from the start
No unlock needed — this is available in every new save file.
What unlocking Big Chubby leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13