Sparky is an old-timing Junkyard Dog who appears to have some spunk left in him. He is an Irish Wolfhound with light gray on his mustache and eyebrows.
Sparky used to know the Tramp, or so he says. He doesn't do much else, other than tell Scamp tales about his father. They weren't true, of course, but Sparky seems really into story-telling. He eventually leaves the junkyard with the other Junkyard Dogs minus Buster, and gets adopted by a family along with Scratchy.
He bears a similarity to Amos Slade's dog, Chief, as they are both the same breed.