How many movies have Sean Astin and Seung Woo Cha collaborated on?

They have worked on 1 movie together! Their first movie together was The Spooky Tale of Captain Underpants: Hack-a-ween (2019) and was their highest rated movie together. They have not worked together since The Spooky Tale of Captain Underpants: Hack-a-ween (2019).