Guppy's Hair Ball

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Guppy's   Hair   Ball
Removed in Afterbirth †Item icon
Added in Afterbirth †Item icon
Item altar
"Swing it"
Table dividing line 1.png
Item ID
5.100.187
Table dividing line 2.png
Table dividing line 3.png
Collection Grid
Removed in Afterbirth(page 2, column 4, row 9)
Added in Afterbirth(page 2, column 4, row 4)
Unlock Method
Guppy's Hairball Become Guppy

Guppy's Hair Ball is an unlockable passive item.

Effects[edit | edit source]

  • Spawns a hairball familiar that loosely follows behind Isaac, blocks shots, and can be swung like a flail to damage enemies.
    • The ball deals 5 damage per tick, but grows for +2 damage when it kills an enemy — up to 5 times for a maximum of 13 damage. The damage it deals per tick (each half-second) is (level × 2) + 3.
    • The hairball level decreases upon entering a new floor: if level 2, it reverts to level 1. If level 3 or 4, it reverts to level 2. If level 5, it reverts to level 3.
  • This item belongs to the Guppy set. Collecting three items from this set will transform Isaac into Guppy.

Notes[edit | edit source]

  • The hairball's hitbox is the same size regardless of level.
  • Added in Afterbirth / Removed in Afterbirth † Killing the Blue Flies that Hush spawns does not increase its level.
  • Removed in Afterbirth † If Isaac has transformed into Guppy, Guppy's Hair Ball spawns Blue Flies when it deals damage.
  • If Blindfolded, the ball occasionally spawns a Blue Fly while it's damaging an enemy.

In-game Footage[edit | edit source]

Trivia[edit | edit source]

  • This item is used in Cat Got Your Tongue (challenge #8).
  • The function and flavor text of this item might reference the idioms "no room to swing a cat" and "can't swing a dead cat without hitting...".
  • In the original The Binding of Isaac, Guppy's Hairball did not count towards the Guppy transformation.


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