How many movies have Frank Welker and James T. Walker collaborated on?

They have worked on 4 movies together! Their first movie together was Scooby-Doo and the Ghoul School (1988) while their highest rated movie together was Scooby-Doo on Zombie Island (1998). They have not worked together since Tom and Jerry: The Magic Ring (2002). They are most known for their family films together.

Role
Hector the Bulldog / Hugo the Abominable Snowman / Mugsy / Penelope Pussycat (voice)
Crew
Director
Crew
Producer
Role
Matches / Papa Werewolf / Well Dweller (voice)
Crew
Animation Director