Hachijou Tooya

Tooya was found on the road by Hachijou Ikuko after the Rokkenjima incident. He was Ushiromiya Battler once, but after receiving brain damage from being hit by a car or from almost drowning, he suffered from amnesia. The accident made him unable to think of Battler's memories as his own. He began to recover his memories as Battler upon hearing of the Rokkenjima incident from Ikuko, but develops a personality disorder; he fears that, one day, Battler's personality may seize control of him.

At the end of the Magic Ending in Twilight of the Golden Witch, it's implied that Battler finally died and Tooya could start living without the burden of Battler.