Species This page is a stub. E Ostro [Edit] [Talk] Ostros are large flightless, ostrich-like enemies that appear only the game, Super Mario Bros. 2 and are ridden by Shy Guys. This Mario related article is a stub. Please help by expanding it. Retrieved from "https://nintendo.fandom.com/wiki/Ostro?oldid=478910" Categories: Species articles Pages needing a quote Class E articles Mario stubs Stubs Mario enemies Mario characters Community content is available under CC-BY-SA unless otherwise noted.