In the French adaptation, Reika Randou is named Ulrich. She belongs to the five-member Randou family as Miki’s twin sister. The Randous pursue the ancient Quaschika treasure while combating the subterranean Goblin Society. Ulrich pilots one of the two "Buncher Arrow" motorcycles that transform into the arms of the combined super robot Acrobunch during battles against the Goblins. Her tomboyish personality contrasts with Miki’s traditionally feminine demeanor, emphasized by the masculine-sounding French name. She displays vulnerability during conflicts, occasionally through Clothing Damage scenarios. Interactions within her family include irritation toward her younger siblings' playful activities. She engages in exploration and combat alongside her brothers Hiro, Ryo, and Jun.