How many movies have Julio César Agrasánchez and Rogelio Agrasánchez Sr. collaborated on?

They have worked on 5 movies together! Their first movie together was Superzan el Invencible (1971) while their highest rated movie together was Mystery in the Bermuda Triangle (1979). They have not worked together since Mystery in the Bermuda Triangle (1979). They are most known for their action films together.