How many movies have Carl Lumbly and Dwayne McDuffie collaborated on?

They have worked on 2 movies together! Their first movie together was Justice League: Starcrossed - The Movie (2004) and was their highest rated movie together. They have not worked together since Justice League: Doom (2012).

Role
J'onn J'onzz / Martian Manhunter / Ma'alefa'ak (voice)
Crew
Screenplay