Frollo's Heartless

When Frollo went insane in the final battle of Notre Dame, his heart was consumed by the darkness as he battled Spyro and Quasimodo, turning him into a Heartless. When Frollo died after falling off the gargoyle that was possessed by a Heartless, Frollo's Heartless spawned a Nobody from Frollo's desire for vengeance and survival. When Maleficent resurrected Frollo's Heartless to serve as a minion of the Horned King in The Black Cauldron, she used glamor magic to make Frollo's Heartless appear to be his former human self in order to keep him in the dark about what he truly was at the moment.

However, the truth was finally revealed to Frollo in Spirited Away when he came face to face with his nobody, who had joined Young Xehanort's Nu Organization. Upon learning the truth from Maleficent, Frollo used his anger to reverse the glamor magic placed upon him, transforming him into his true form, which looked like a demonic black skinned version of himself. As of now, Frollo's Heartless continues to serve the Villain League against his free will.