TMDb/The Super Mario Galaxy Mo Movie Explore forgotten lore & new characters in the Super Mario Galaxy Movie. Spot Easter eggs from the games in this cinematic universe expansion. April 2, 2026 AceShowbiz - The upcoming Super Mario Galaxy Movie is set to delve deep into the rich and sometimes overlooked history of the Super Mario Bros. franchise, bringing back characters and lore that many fans may have forgotten or never encountered. Recent trailers have already confirmed the inclusion of notable new-era characters such as Princess Rosalina, voiced by Brie Larson, and Bowser Jr.