“Sheldon Plankton” was an Iconic TV show character/villain from the very famous and influential TV show “Spongebob Squarepants” .Although his fame mainly revolves around his role as Mr.Krab’s arch-nemesis, he’s also known for singing in a few songs in the show, most notably the “F.U.N Song”, where plankton is being taught True Friendship by Spongebob Squarepants, since spongebob feels as though Plankton is lonely. This seems to be working, and plankton becomes a good friend of Spongebob, but it is later revealed that it was all a cleverly made hoax for plankton to obtain the Secret Formula