How many movies have Jonathan Dern and Sean Platter collaborated on?

They have worked on 4 movies together! Their first movie together was The Secret of NIMH 2: Timmy to the Rescue (1998) while their highest rated movie together was Hydee and the Hytops (2011). They have not worked together since Hydee and the Hytops (2011). They are most known for their animation films together.