How many movies have Frank Welker and Roger Rose acted in together?

They have worked on 3 movies together! Their first movie together was I Yabba Dabba Do! (1993) while their highest rated movie together was Scooby-Doo! Return to Zombie Island (2019). They have not worked together since Scooby-Doo! Return to Zombie Island (2019). They are most known for their comedy films together.