Ralph Zinobop is the inventor of the "Steel Duck." He is eager to enter the next phase of his plan: to make money off his inventions to regain his rightful place as ruler of the Planet Zinobop — a planet that he was exiled from by his paranoid father several years ago. His other hobbies include wild get-get-rich schemes and drinking copious amounts of coffee. He also has a terrible temper.
Roberta Smeffinfeffer is level-headed, if not a little bit insecure. She has the tendency to follow her heart a little too much. Case in point: she's also Ralph (and Ralphie's) ex-wife. She has a background in space biology and studies medicine for awhile. She currently serves as doctor aboard the "Steel Duck."
…and radiation sickness.