How many movies have Mihalis Ballis and Nikos Fermas acted in together?

They have worked on 3 movies together! Their first movie together was Το Βλακόμουτρο (1965) while their highest rated movie together was Ο Παπατρέχας (1966). They have not worked together since Ο Παπατρέχας (1966). They are most known for their comedy films together.