- For other uses, see Bill (disambiguation).
In "Insheeption", during Mr. Mackey's dream, Billy threatened to beat Mackey up for telling on him for smoking. During a field trip, he volunteered to be in Mackey's group in order to bully him. However, Stan Marsh, who was trapped in Mackey's dream, convinces him to stand up for himself and fight Billy. Shortly before the fight, Billy and his friends were killed by several men who infiltrated Mackey's dream. However, Billy's murder was in a dream, so the incident didn't kill him in real life. It is unknown whether or not he is still alive to date.
Billy has blond hair. He wears a yellow singlet and light green trousers with a black belt.
Billy seems to be violent, as he was quick to threaten to beat up Mr. Mackey, despite Mackey only looking out for his health.
|Minor Characters from Season Fourteen|
| Billy Miller | Billy Thompson | Cajun Shrimp Merchant | Captain Hindsight | Colonel Sanders | Grandma Marsh | Geoff Hamill | Isayah Zordon | Justin Bieber | Kardashians | Kip Drordy | Matthew Broderick | Matt Lauer | Morgan Freeman | Mr. Yelman | Patty Hamill | Sarah Jessica Parker | Snooki | Tiger Woods | Tony Hayward | Woodsy Owl|