In the infamous episode "The N Men," Jimmy, Sheen, Carl, Libby, and Cindy return from miniature golfing on Mercury and try to pass the time as they head home. Jimmy wanders away from the controls to arm wrestle Cindy, and the ship goes through a band of radiation which has some strange effects on the kids. When they crash land in Jimmy's front yard, they get out, and Sheen, Cindy, Libby, and Carl all demonstrate a range of flashy superpowers only to find that Jimmy's skin turns orange and his hair becomes green, much to his own chagrin. Due to his friends' teasing about his useless powers, Jimmy later turns against the others once his anger gives him super strength.
This closely mirrors the origins of Marvel's Fantastic Four and their dynamic with their chief comic villain, Doctor Doom. In the comics, Reed Richards, Ben Grimm, Susan Storm, and Johnny Storm all leave Earth, are hit by radiation and return to Earth with incredible powers, but a disfigured former friend, Victor Von Doom, grows bitter and turns against the others. Aside from the similar story, Libby also inherits the exact same power as Susan Storm, further cementing the N Men's clear creative debt to the Fantastic Four.
