protagonist has definitions from the field of writing
1
[ noun ] a person who backs a politician or a team etc.

Examples

"all their supporters came out for the game" "they are friends of the library"

Used in print

(Musical America, LXXXI:5...)

Meager and shabby by-products linger to haunt our memories of a once mighty protagonist ; a maladroit reharmonization of our National_Anthem ( The Star-Spangled_Banner ) ; a poor attempt to write an idiomatic jazz concerto ; a circus polka for elephants ; his hopes that the tunes from his old music might be used for popular American commercial songs !

2
[ noun ] (writing) the principal character in a work of fiction

Synonyms

agonist

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