the eponymous character of a book, play, film, etc. is the one mentioned in the title synonym titular(主人公与标题)同名的 Don Quixote, eponymous hero of the great novel by Cervantes 堂吉诃德——塞万提斯巨著中与书同名的主人公
Oxford Collocations DictionaryEponymous is used with these nouns:- hero
- heroine
Word Originmid 19th cent.: from eponym + -ous.