Auron's Statue

Auron's Statue is a key item that appears within Olympus Coliseum, in Kingdom Hearts II. It is a miniature statue of Auron and its owner has the power to control Auron, in a similar fashion to a voodoo doll. Hades exploits this use to benefit himself.

Kingdom Hearts II
In another of Hades's attempts to destroy Hercules, Sora, Donald, and Goofy, Hades seal Auron's free will into a doll and forces him to fight Hercules in the Underworld Coliseum after Auron refuses to do so. To release Auron's will free Hades's control, Sora journeys to the Underworld to search for it. Once Sora returns to the arena where Auron and Hercules were battling, he throws the doll above Auron's head and it shatters, restoring Auron's free will.