Flatworm Jim was the original pilot of the "Steel Duck." A six-foot-tall intelligent flatworm, Jim’s usefulness was cut short when he was injured, resulting in three versions -- good, bad and a two-headed neutral version. All three (or four) now live on Ralph’s asteroid tending to over 6 million hamsters.
Mayberry Melonpool is the television-addicted, somewhat clumsy, not-all-that-intelligent Captain of the "Steel Duck." Oh yeah, and he's obsessed with getting a date. In short, he doesn't have a lot going for him.
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.
Sam T. Dogg is completely out of his element. He’s super intelligent, a highly-skilled pilot and has the most common sense of anyone aboard the "Steel Duck." Also, no one takes him seriously because he’s a dog.
“Dude, where’s my chair?”
Oh! He lost his chair! Now he’s out of the game! Wait… where was the music?
I’m guessing Jim regenerative status is making is so he can’t properly fly the ship.