How many movies have Matthew Greywolf and Roel van Helden acted in together?

They have worked on 7 movies together! Their first movie together was Powerwolf - The Metal Mass Live (2016) while their highest rated movie together was Powerwolf - Hellfest 2023 (2023). They have not worked together since Powerwolf - Summer Breeze 2023 (2023). They are most known for their music films together.