|Needs a stretch!|
This article needs more details, such as a synopsis. Remove this tag when the article has been properly expanded.
|Motive||To steal rocket secrets|
|First appearance||TNSDMysteries: A Scarey Duel With a Cartoon Ghoul|
Monster Mutt is a cartoon character, the enemy of Hero Hound.
The New Scooby-Doo Mysteries
Dimwittie the studio guard (really a master spy) brought him to life as a disguise in order to steal rocket secrets.