Rei Hayama/Reddle I (羽山 麗／初代レッドル Hayama Rei/Shodai Reddoru) is a 22-year-old animal instructor at Earth Academia's Aquarium. Captured along with Daisaku at first and receiving her B-Commander at the same time, she demolished the Jamar soldiers before joining forces with Takuya and Daisaku. The only female B-Fighter, her armor was modeled after a female Japanese rhinoceros beetle. Reddle is the fastest and most nimble of the B-Fighters. She eventually left for the South American branch of Earth Academia to do research and help with protecting the wildlife there.