Guppy's Adversary is a passive item in Damnation, a mod for The Binding of Isaac.

Spawns Cat Cage in every Arcade and Super Secret rooms.

Guppy's Adversary can be found in the following item pools:

The following tags are applied to this item:

This item has "Guppy" in its name, but it does not contribute to Guppy transformation, because the cat in this item's sprite is not Guppy.

• Download Damnation from the Steam Workshop.