protagonist，
英语单词，主要用作名词，作名词时译为“主角，主演；主要人物，领导者”。
1.N-COUNT Someone who is a protagonist of an idea or movement is a supporter of it. 倡导者; 拥护者 [正式]
2.N-COUNT A protagonist in a play, novel, or real event is one of the main people in it. (戏剧、小说或真实事件里的) 主人公 [正式]