TMDb/The Super Mario Galaxy Mo Movie Glen Powell joins the Super Mario Galaxy Movie as Star Fox! New cast revealed, including Brie Larson, Donald Glover & more. See who's returning. March 28, 2026 AceShowbiz - The Super Mario Galaxy Movie is expanding its cast with the addition of Glen Powell, who will voice the iconic character Star Fox. Powell revealed this exciting news through a Nintendo-themed video on Instagram, accompanied by the playful caption Born to Barrel Roll.