Homer's clones
Wikisimpsons - The Simpsons Wiki
Homers clones were created when he used a cloning machien to make more of him in a Treehouse of Horror episode. His clones did not have any belly buttons and had the same weakness as Homers, Donuts. One of Homers clones was in the backround as Peter Griffen on Family guy, and another of his clones was Homers old version of him. Giant donuts eventualy drive the rest of the Homers away. At the end, Homer goes to bed with Marge, and it seems that the Homer with marge had no belly button, so that was a clone!