Nathan is a mentally handicapped student at South Park Elementary who is first seen in the Season Eight episode, "Up the Down Steroid". He was later seen at summer camp in "Crippled Summer", during the fundraiser in "Handicar", and competing in the science fair in "Moss Piglets". He is usually accompanied by his lackey, Mimsy, and frequently serves to be a rival/antagonist of Jimmy Valmer and Timmy Burch. He also appears as a major antagonist in the South Park: The Fractured But Whole DLC "Bring the Crunch".