How many movies have Sam Register and Tim Sheridan collaborated on?

They have worked on 6 movies together! Their first movie together was Reign of the Supermen (2019) while their highest rated movie together was Scooby-Doo! and the Curse of the 13th Ghost (2019). They have not worked together since Batman: The Long Halloween, Part Two (2021). They are most known for their animation films together.