Walt the Dog was a dog owned by Governor L. Phatt, who occasionally worked with Phatt's guard.
He served as a watch dog in the Phatt Island jail and held the prison key.
Guybrush Threepwood encountered him in LeChuck's Revenge when the intrepid hero had a bounty for arrest and was temporarily sent to jail.
- Walt is named after Steve Purcells dog who in turn may have been named after Walt Disney.
- Walt appears in homage to the Pirates of the Caribbean ride on which the series was originally based. A similar dog guarding a pirate jail cell with a key in its mouth appears in the ride.