How many movies have Gregory M. Gerlich and Sylvester Stallone collaborated on?

They have worked on 4 movies together! Their first movie together was Rocky III (1982) while their highest rated movie together was Rocky IV (1985). They have not worked together since Cobra (1986).

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Lieutenant Marion 'Cobra' Cobretti
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Robert "Rocky" Balboa
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Robert 'Rocky' Balboa
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