|Cartoon debut||"Arthur's Eyes"|
Otis is a brown colored bear that wears a cream colored sweater, blue jeans, and red and white shoes. He also has short black hair. He wears a turquoise colored sweater during the Fall season.
- Otis was seen at the Children's Hospital Boston along with his mother in the Arthur's Guide to Children's Hospital Boston website feature, wearing a red sweater over a white shirt, and brown pants.
- He is a fan of the Horrendously Horrible Happenings books.
- In Arthur's Eyes he is seen in Mr Marco's 2nd grade class
- In early production, his name was Frankie
- Season 1
- Season 7
- Prunella Sees the Light 70901
- Season 8
- Season 9
- Season 10
- Season 11
- Season 12
- Do You Believe in Magic? 120902
- Season 14
- The Buster Report 140102
- Season 15
- Season 20