How many movies have Britt McKillip and Mark Oliver acted in together?

They have worked on 4 movies together! Their first movie together was Candy Land: The Great Lollipop Adventure (2005) while their highest rated movie together was Barbie in the 12 Dancing Princesses (2006). They have not worked together since My Little Pony: The Movie (2017). They are most known for their animation films together.