Matthew Klinner's character was animated into the opening title sequence in the ending crowd scene along with The Boys, standing, waving, and smiling at the viewer next to the South Park sign. His character was created based on photographs that he sent to the South Park artists. Additionally, he was given a special poster signed by South Park creators Trey Parker and Matt Stone.
Matthew's character has brown hair that is combed on the top and shaved short on the sides and brown eyebrows. He wears a green shirt with two white skull designs on it and blue jeans.
- He was the second South Park fan to guest star on the show. The others were Alex Glick in "Red Man's Greed", Hugh who appeared in a few episodes of Season Twenty-Two, and Sef Furman in "The Pandemic Special".
- "Season Premiere Tonight!" (March 17, 2010).