How many movies have Aarón Rodríguez Arellano and Rogelio Agrasánchez Sr. collaborated on?

They have worked on 8 movies together! Their first movie together was The Champions of Justice (1971) while their highest rated movie together was The Mummies of Guanajuato (1972). They have not worked together since Mystery in the Bermuda Triangle (1979). They are most known for their action films together.