Riina Tada features exclusively in THE IDOLM@STER CINDERELLA GIRLS Theater, setting her apart within the franchise. She is a female teenager with green eyes and neck-length brown hair. Her musical contributions include the group song "Akikaze ni Te o Futte" with Yuka Nakano and Yumi Aiba, and "Mujuuryoku Shuttle" featuring Rika Jougasaki, Nana Abe, Minami Nitta and Yumi Aiba. Riina aspires to reveal dimensions beyond a rock persona. She embraces traits like oversleeping and crying, viewing self-acceptance as integral to her identity and development as an idol.