Ultraman Hikari (ウルトラマンヒカリ Urutoraman Hikari?) was an excellent scientist who belonged to Space Science Technology Bureau. At one point Hikari became Hunter Knight Tsurugi (ハンターナイトツルギ Hantā Naito Tsurugi?) after his failed defense of the Planet Aarb. He bears Star Marks (Medals of Honor to the Ultra Race) on his chest, like Zoffy, showing that he is a very respected Ultra.