Mooch has a good heart, but Buster doesn't see much use for him other than to crash through fences so he can get through (as Buster was incapable of unlocking gates by himself). Mooch has only but heard tales of Tramp, and they're pretty exaggerated. He eventually leaves the junkyard with the other Junkyard Dogs minus Buster, and gets adopted by a family.
- Mooch bears a similarity to Prince Eric's dog, Max, from The Little Mermaid as they are both the same breed.
- Mooch is voiced by Bill Fagerbakke.
- Mooch is an Old English Sheepdog who also lives in the Junkyard with the other dogs.
- Mooch's gender is a male.
- Mooch is one of the Disney characters to be dim-witted.
- His personality is closely similar to that of Bill Fagerbakke's most famous role as Patrick Star from SpongeBob SquarePants.