Question: What actor portrayed the main professional boxer who appeared in the seven movie series, including "Creed" and "Rocky Balboa"?
Sentence (from "Rocky Balboa"): While he is loosely based on Chuck Wepner, a one-time boxer who fought Muhammad Ali and lost on a TKO in the 15th round, the inspiration for the name, iconography and fighting style came from boxing legend Rocky Marciano.
Relevant evidence: No