How many movies have Frank Welker and Kevin McDonald acted in together?

They have worked on 4 movies together! Their first movie together was Stitch! The Movie (2003) while their highest rated movie together was What's New Scooby-Doo? Vol. 4: Merry Scary Holiday (2007). They have not worked together since Scooby Doo and The Zombies (2011). They are most known for their comedy films together.

Role
Scooby-Doo / Fred Jones (voice) (archive footage)
Role
Julian Libris (voice) (archive footage)
Role
Sparky / Sprout / Mr. Stenchy / Kixx / Hoilo / Slugger (voice)
Role
Pleakley (voice)
Role
Sparky (voice)
Role
Pleakley (voice)