How many movies have Albert Pyun and Anthony Riparetti collaborated on?

They have worked on 31 movies together! Their first movie together was Alien from L.A. (1988) while their highest rated movie together was Cyborg Nemesis: The Dark Rift (2016). They have not worked together since Interstellar Civil War: Shadows of the Empire (2018). They are most known for their action films together.