The Megalomanium was one of Jimmy's experiments seen in the episode "The Tomorrow Boys".  It causes anyone or anything he sprays with it to become power-hungry. He tested it on two flowers, and it turned them into violence-craving demons. This played a pivotal role in the episode Tomorrow Boys.  Jimmy and Carl accidentally gave it to Libby for her birthday, and it caused her to turn into an evil tyrant who took over the future Retroville.  Under her role, Jimmy was married to Cindy and forced to clean her mom's feet, Carl was an outlaw, and Sheen was a dumpster diver.