Robby the Robot gets ready to ride his Roadmaster bicycle, posing for the photographer in a still from MGM’s 1957 sci-fi adventure, The Invisible Boy. (Alternate title: S.O.S. Spaceship.) This is Robby’s second starring role, following the 1956 sci-fi classic Forbidden Planet. Child actor Richard Eyer stars in the title role of the space sequel, which toggles back to the 20th century from Forbidden Planet’s 23rd century setting.