How many movies have Frank Welker and Vernee Watson-Johnson acted in together?

They have worked on 5 movies together! Their first movie together was G.I. Joe: The Movie (1987) while their highest rated movie together was Scooby-Doo: Agence toutou risques, vol. 1 : Le voleur de vélo (2007). They have not worked together since Scooby-Doo: Agence toutou risques, vol. 2 : Le fantôme de la télé (2007). They are most known for their family films together.