Ryuu... take care of Mebius and the Earth. -Serizawa's last words Kazuya Serizawa/Ultraman Hikari (セリザワ・カズヤSerizawa Kazuya): The first human host of Ultraman Hikari, Serizawa was originally thought dead until his reappearance under Hikari's control. He was the captain of GUYS Japan before his apparent death and Sakomizu replaced him. Originally it seemed his humanity was cut out by the vengeful Hikari but after the last battle with Bogal it was his will that allowed Mother to restore the ailing Ultra and restore his Ultra Spirit.