protagonist
noun [ C ] uk/prəˈtæɡ.ən.ɪst/ us/prəˈtæɡ.ən.ɪst/
(CHARACTER)
C2 literature, theatre & film formal（故事或戏剧中的）主要人物，主角
one of the main characters in a story or a play
(SUPPORTER)
（某一想法或政治制度的）主要支持者，主要拥护者
an important supporter of an idea or political system
Key protagonists of the revolution were hunted down and executed. 这次革命的主要发起者被捕并被处决。
Compare: antagonist (PERSON)