The mascot of Whistlin' Willy's Pizza Gulch, he stops by to deliver kids their pizzas if they whistle for him. He also appears at special events like kids' birthday parties. Bill, the owner of Whistlin' Willy's, sometimes wears the mascot costume, as well - including when he decided to kick all of the Yelpers out of his restaurant for their behavior. Eric Cartman has notably never been as fond of him as the other kids and prefers Shakey's Pizza or Pizza Nut... he was the only fourth grader to be happy when the other Yelpers destroyed it.
The place has reopened though, and now Bill delivers Yelpers' Specials to people all over town.
- "If you want a pizza, you've gotta whistle." (Quest for Ratings)
- Quest for Ratings (s08e11; debut)
- The Losing Edge (s09e05; cameo)
- You're Getting Old (s15e07; cameo)
- You're Not Yelping (s19e04)
Behind the Scenes
"You're not Yelping" (s09e04)
Here's some behind the scenes content from this episode -- in the top right, you can see Whistlin' Willy's brand new design for S19!