Scrappy-Doo

Scrappy-Doo is a main character in Scooby Doo and the Ghoul School, serving as the main protagonist of the movie.

Biography
Scrappy-Doo is a giant dog who, unlike his uncle, can properly talk.

Role in the movie
Scrappy, along with his uncle Scrappy-Doo and friend Shaggy, are gym teachers at Miss Grimwood's Finishing School for Ghoul Girls.