sentences:  The Mooninites are two aliens from the Moon who frequently appear, serving as primary antagonists and wreaking havoc through a series of illegal or destructive actions.The Mooninites appear more than most characters outside the main cast.Other recurring characters have made several appearances, including Oglethorpe and Emory, MC Pee Pants, Cybernetic Ghost of Christmas Past from the Future, and Dr. Wongburger.