pro·tag·o·nist 
/proʊˈtægənɪst/ noun
plural pro·tag·o·nists /proʊˈtægənɪst/ noun [count] 1 : the main character in a novel, play, movie, etc. 2 : an important person who is involved in a competition, conflict, or cause
▪ She was a leading protagonist in the civil rights movement.
▪ She was a leading protagonist in the civil rights movement.
