Ermes Costello is a character in Jojo's Bizarre Adventure. She appears in Part 6: Stone Ocean. Headstrong and determined, she voluntarily imprisoned herself to get revenge against her sister's killer. Ermes befriends Jolyne in Green Dolphin Street Prison and looks out for her as they face hostility from inmates, guards, and other Stand users. When Ermes gets nicked by the pendant, she gains a stand called Kiss, which can duplicate objects with a kiss sticker, then make them one again to cause damage.

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