Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun protagonist
2 senses of protagonist
Sense 1
supporter, protagonist, champion, admirer, booster, friend -- (a person who backs a politician or a team etc.; "all their supporters came out for the game"; "they are friends of the library")
=> advocate, advocator, proponent, exponent -- (a person who pleads for a cause or propounds an idea)
Sense 2
protagonist, agonist -- (the principal character in a work of fiction)
INSTANCE OF=> fictional character, fictitious character, character -- (an imaginary person represented in a work of fiction (play or film or story); "she is the main character in the novel")