Robbie was a Junior Birdman, similar to a Boy Scout, who was rather small and weedy until he touched his magic woggle. This transformed him into a tall, athletic superhero called Robbie Rocketpants who wore jet-powered rocket pants. The Cat was a fan of Robbie Rocketpants and suggested that the Dwarfers could escape from the Psi Moon by putting on jet-powered rocket pants and flying away. Kryten had to point out that there was no such thing outside the fictional world of Robbie Rocketpants (RD: Terrorform).