How many movies have Felix Villar and Fernando Poe Jr. collaborated on?

They have worked on 4 movies together! Their first movie together was Lo'Waist Gang at si Og sa Mindoro (1958) while their highest rated movie together was Night and a Thousand Horrors (1960). They have not worked together since Lo' Waist Gang Joins the Army (1960). They are most known for their action films together.