How many movies have Brian Unger and Kevin Michael Richardson acted in together?

They have worked on 2 movies together! Their first movie together was What's New, Scooby-Doo? Vol. 1: Space Ape at the Cape (2004) while their highest rated movie together was Scooby-Doo and the Snow Creatures (2013). They have not worked together since Scooby-Doo and the Snow Creatures (2013).