Tommy the Opossum is a crazy, but kind-hearted opossum, and is Collin's best friend.
This opossum is playful and can be a bit crazy sometimes, but sometimes, when he's mad, watch out for him!
- Scot Menville (games, television series, MAD)
- Dee Bradley Baker (vocal effects, main)
- Frank Welker (vocal effects, films and occasional)
- Josh Gad (films)
- Dan Milano/Seth Green (Robot Chicken)
- He was originally going to be a shrew.