Marc was a security guard in the episode "Trapper Keeper". He along with the blond haired security guard, was stationed at Cheyenne Mountain's military base. He and many others thought that Cartman's trapper keeper was the nicest thing he'd ever seen. When he was about to report the giant blob, which is Cartman, he was grabbed by it and pulled into the blob. When the blob was destroyed he wasn't shown to come out but it's possible that he survived. He, or a similar character, appeared in the earlier episode "Korn's Groovy Pirate Ghost Mystery", also alongside the blond haired security guard, working at the cemetery.
Marc wears a blue police officers uniform which consists of blue pants, a blue collared shirt, and black shoes. He also wears a black belt, a black tie, and a blue police officer's hat. He has brown hair.