- For other uses, see Bill (Disambiguation).
Billy wears a green long-sleeved shirt, brown pants, and black shoes.
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- "Trapper Keeper" - Votes and supports Filmore in the elections for kindergarten class president.
- "Helen Keller! The Musical" - Seen in the Kindergarten play.
- "It Hits the Fan" - Seen in class.
- "Proper Condom Use" - Seen in the kindergarten class when Mr. Garrison demonstrated condom use.
- "Butt Out" - Seen in the assembly.
- "AWESOM-O" - Seen laughing in the crowd when a video of Cartman as Britney Spears in "Touch My Body" was shown.
- "ManBearPig" - Seen at the school assembly.
- "Miss Teacher Bangs a Boy" - Seen among the kindergarten students with Ms. Stevenson.
- "With Apologies to Jesse Jackson" - Seen at the school assembly.
- "Canada on Strike" - Seen at the assembly about how important Canada is.
- "Breast Cancer Show Ever" - Seen on the playground while Wendy was beating up Cartman.
- "The Ungroundable" - Seen at the school assembly.
- "The F Word" - Seen on the news.
- "Dances with Smurfs" - Seen at the school assembly and in class.
- "Funnybot" - Seen at the school assembly in formal outfit, where the 1st Annual Comedy Awards was held.
- "City Sushi" - Seen at the school assembly.
- "1%" - Seen at the school auditorium.
- "Butterballs" - Seen at the school assembly.
- "REHASH" - Seen with Ike Broflovski and other kindergartners watching video game commentaries.
- "Safe Space" - Seen at the school assembly and in the kindergarten classroom right before Butters attempts suicide.
- "SUPER HARD PCness" - Seen at the gym during the bombing of Canada.
- "Let Them Eat Goo" - Seen at the school assembly.
- "Tegridy Farms Halloween Special" - Seen at the school assembly.
Billy is one of six kindergartners that are involved in the Hide 'n' Seek side quest.
- "South Park: The Stick of Truth (2014 Video Game)". IMDb.com.