- For other uses of "Billy", see Billy (disambiguation).
|Hair color||Dark brown|
|Cartoon debut||Arthur's Eyes|
He is also a member of the Tough Customers, a group of bullies at Lakewood. Despite being in the Tough Customers there is a chance he might be friends with Buster, which is seen in the episode Buster Makes the Grade.
Billy is a bear with a light brown complexion. He has dark brown hair. He wears a yellow and blue shirt with a blue number 8 on the back and on both sleeves. He wears jeans and red-and-white shoes. His head shape is similar to the Tibble Twins.
- Despite being in the Tough Customers, Billy has rarely been seen with them.
- He was part of the group of kids at Camp Horsewater.
- He appears to be friends with Buster, which makes an odd friendship along with Steve.
- 10101 Arthur's Eyes
- 10102 Francine's Bad Hair Day
- 10201 Arthur and the Real Mr. Ratburn
- 10401 D.W.'s Imaginary Friend
- 10701 Arthur Goes to Camp (cameo)
- 10702 Buster Makes the Grade
- 11202 Arthur's Lost Dog
- 12101 Sue Ellen Moves In
- 12202 Team Trouble
- 12301 Bully for Binky (cameo)
- 12702 Arthur's Substitute Teacher Trouble
- 12901 My Club Rules
- 20202 Arthur's Lucky Pencil
- 20702 Night Fright (cameo)
- 21202 Arthur and the Square Dance
- 21401 Sue Ellen's Lost Diary (Cameo)
- 30502 Revenge of the Chip (Cameo)
- 30702 Dad's Dessert Dilemma (Cameo)
- 31102 Arthur's Almost Live Not Real Music Festival
- 40502 The Rat Who Came to Dinner
- 50501 The Lousy Week
- 80501 Vomitrocious! (cameo)
- 91001 Breezy Listening Blues (cameo)
- 110401 Phony Fern (cameo)
- 130402 The Good, the Bad, and the Binky (seen walking past Pizza Paula's)
- 130601 When Carl Met George (cameo)
- 140401 Falafelosophy
- 150101 Fifteen