Guppy's Collar

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Item icon
Item altar

Table dividing line 1.png
Character appearance
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Item Pool Curse Room.png Curse Room
Item Pool Devil Room.png Devil Room
Item Pool Red Chest.png Red Chest
Added in AfterbirthGreed mode onlyItem Pool Curse Room.png Curse Room
Added in AfterbirthGreed mode onlyItem Pool Devil Room.png Devil Room
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Added in Afterbirth (page 2, column 9, line 5)
Removed in Afterbirth (page 3, column 9, line 1)

Guppy's Collar is a passive item.

Effects[edit | edit source]

  • Grants Isaac a permanent 50% chance to resurrect on death.
    • Resurrection leaves Isaac at 1/2 of a red heart.
    • Guppy's Collar takes priority over all other resurrection items when activated.
  • This item belongs to the Guppy
    Guppy App.png
  • Flight.
  • Spawns a blue fly each time a tear hits an enemy.
  • set. Collecting three items from this set will transform Isaac into Guppy.

In-game Footage[edit | edit source]

Trivia[edit | edit source]

  • This item is a tribute to Edmund's cat Guppy.[1]
  • This item may also be a reference to the Schrödinger's Cat thought experiment.
  • It is possible to obtain two collars by finding one in a red chest, without picking it up, and then finding another collar in a different red chest. However, this does not have any additional effects and does not count towards transforming into Guppy.
  • Resurrecting in a Curse Room may trap Isaac if he has no way of recovering health or exiting them without losing health.

Bugs[edit | edit source]

Bug Bug! When the Keeper is resurrected by Guppy's Collar, there is a chance it spawns with half a soul heart as health. When a health upgrade is obtained, the Keeper will have 1 coin, as well as the half soul heart as health. When a second health upgrade is obtained, Keeper will lose the half soul heart and have 2 coins as health.
Bug Bug! Removed in Afterbirth † Guppy's collar can be exploited to gain infinite lives. When Isaac's last will is on the screen, close the game, re-open it, and continue the run. Isaac will appear to die again, and will also have a separate chance to be resurrected.

Gallery[edit | edit source]

Seeds[edit | edit source]

 PC  RWBY 10FQ (Curse room adjacent to spawn, in red chest)

 PC  1CMD B881 (Curse room adjacent to spawn, surrounded by spiders)

 PC  Added in Afterbirth FM7Z 4VAJ (Curse room adjacent to spawn, surrounded by spiders)

 PS4  FQTL 13FX (Curse room adjacent to spawn)

 Switch  XSDE HE2L (First floor curse room)

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