Trivia

Went to elementary school with his boss Trey Parker.

In the episode of South Park (1997) where Butters' first name first changes from Eric or Leopold, he is credited as Eric "Leopold" Stough.

The character of Leopold (formerly Eric) "Butters" Stotch on South Park (1997) is a lampoon of him.

Worked on the original "handmade" pilot of "South Park" with Trey and Matt

Attended University of Colorado with show co-creators Trey Parker and Matt Stone

The name Eric would also be Cartman's first name in South Park, which Eric Stough was the director of, since Cartman is one of the four man characters the show is characterized with.