How many movies have Carl Steven and Casey Kasem acted in together?

They have worked on 2 movies together! Their first movie together was Scooby-Doo: Agence toutou risques, vol. 2 : Le fantôme de la télé (2007) 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. 1 : Le voleur de vélo (2007).