How many movies have Joseph Chou and Tetsuya Takahashi collaborated on?

They have worked on 5 movies together! Their first movie together was Appleseed: Ex Machina (2007) while their highest rated movie together was Appleseed Alpha (2014). They have not worked together since Starship Troopers: Traitor of Mars (2017). They are most known for their science fiction films together.