Marcy Regina Wu[3] is a major supporting character of Amphibia, serving as a minor character in the first season, and a main character in the second and third season. She is a 13 later 14-year-old Taiwanese-American[4] human girl who is childhood friends with Anne and Sasha, attending Saint James Middle School together. On Anne's 13th birthday, Marcy read about the Calamity Box and its powers, and ended up discovering it after an argument with her parents over her refusal to move out of Los…