Guppy's Hairball
ItemRebirthLocked
familiarGame ID 187★★★★
How do you unlock Guppy's Hairball?
In The Binding of Isaac, Guppy's Hairball is unlocked by unlocking Guppy's Hairball (Achievement).
Structured pathSource-backed requirements are mapped into trackable steps.
Spawns a familiar that loosely follows behind Isaac, which blocks shots and can be swung like a flail to damage enemies. Grows bigger by killing enemies.
How to unlock: Become Guppy
What unlocking Guppy's Hairball leads to
Nothing depends on this yet.
Source: bindingofisaacrebirth.wiki.gg
Imported 2026-09-13