Guppy's Tail

Item Icon
Pickup Quote	"Cursed?"
Entity ID	5.100.134
Character Appearance
Item Pool	Curse Room Devil Room Red Chest Curse Room Devil Room
Quality	2
Item Tags
Collection Grid	(page 2, column 1, row 4) (page 2, column 11, row 1)

Guppy's Tail is a passive item.

Effects

• Grants a 1/3 chance of replacing Room Clear Awards with a Chest or a Locked Chest, but also a 2/9 chance to replace it with nothing at all.
  • The effect does not apply to Coins dropped in Greed Mode.
• This item belongs to the Guppy set. Collecting three items from this set will transform Isaac into Guppy.

Notes

• The drawback to this item is that Keys become much more scarce, while increasing the amount of Locked Chests. This makes taking Guppy's Tail a potential liability early on.
• Due to any found Chests containing items while in Chest or Dark Room, Guppy's Tail can be a good way to quickly stack up more upgrades before facing the final boss.
• This item has no effect in Greed Mode other than counting towards the Guppy Transformation.

Synergies

• Guppy's Eye: Makes key management easier by revealing which Locked Chests are worth opening and which are not.
• The Left Hand: Turns all chests into Red Chests, allowing Isaac to get Red Chest items much more quickly. Useful when pursuing the Guppy transformation.
• Mom's Key: Increases the number of drops from Chests and counteracts the increased chance to run into Locked Chests.

Trivia

• This item is used in Cat Got Your Tongue (challenge #8).
• The item Dead Cat has Guppy's tail be completely black while Guppy's Tail has a white fur on the tip of the tail.

The Binding of Isaac: Rebirth
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