Birdo, known in Japan as Catherine (キャサリン, Kyasarin), is a fictional character in the Mario franchise. Her first appearance was as an enemy to Mario in Yume Kōjō: Doki Doki Panic, which was localized for English audiences as Super Mario Bros. 2. Since then, Birdo has been a recurring character in various franchise spin-offs. Initially, she was depicted as an antagonist, but has since been depicted as an ally. Birdo has also made several cameos, particularly in the Mario Kart series and the Japan-only Wii video game Captain Rainbow. The original manual for Super Mario Bros. 2 asserts that Birdo...