How many movies have Allan Melvin and Don Messick acted in together?

They have worked on 6 movies together! Their first movie together was Alice in Wonderland or What's a Nice Kid Like You Doing in a Place Like This? (1966) while their highest rated movie together was Scooby-Doo! in Arabian Nights (1994). They have not worked together since Scooby-Doo! in Arabian Nights (1994). They are most known for their animation films together.