Guppy's Collar image

Effects

Notes

Bugs

| (Bug) Bug! | (Removed in Afterbirth †) When the (Keeper) Keeper is resurrected by Guppy's Collar, there is a chance he spawns with a Half Soul Heart instead of Coin Hearts. When an HP up is obtained, Keeper will have 1 Coin Heart, as well as the Half Soul Heart he had previously. When a second HP up is obtained, Keeper will lose the Half Soul Heart and have 2 Coin Hearts, like normal. |

| (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. |