Kingdom Hearts

Kingdom Hearts is a series of action role-playing games developed and published by Square Enix under the direction of Tetsuya Nomura. The series is a collaboration between Square Enix and Disney.

Kingdom Hearts follows the main protagonist Sora, a Keyblade wielder, as he travels to many Disney worlds with Donald and Goofy to stop the Heartless invasion by sealing each world’s keyhole and restore peace to the realms.

Kingdom Hearts
Riku is possessed by Ansem.

Kingdom Hearts: Chain of Memories
Marluxia forces Naminé to rewrite Soras's memories in order to turn him into a puppet under Naminé's control, allowing Marluxia to overthrow his Superior, Xemnas.

Kingdom Hearts II
Prince Eric is hypnotized by Ursula.

Kingdom Hearts Birth by Sleep
Terra is hypnotized by Maleficent, also at the end of the game, Xehanort possess Terra's Body.

Kingdom Hearts 3D: Dream Drop Distance
A revived Master Xehanort attempts to turn Sora into his final host

0.2 A fragmentary passage
Xemnas tries to use Terra to make Aqua reveals the location of Ventus.

Kingdom Hearts III
Aqua is "norted" like Terra.