Takeshi hails from Planet Apolon. He is the pilot of the combined Super Robot Daiapolon. His unique ability allows him to alter his mass and size, transforming into a giant humanoid. This giant form enables him to merge directly with Daiapolon, effectively wearing the colossal machine as protective armor in battle. A condensed film adaptation localized his name as "Terry" and shifted the setting to California, though he retained his core role as the protagonist.