How many movies have Jason Marsden and Michael Rosenbaum acted in together?

They have worked on 4 movies together! Their first movie together was Justice League: Secret Origins (2001) while their highest rated movie together was Justice League: Starcrossed - The Movie (2004). They have not worked together since Dragonlance: Dragons of Autumn Twilight (2008). They are most known for their animation films together.