What does "main character" mean?

A person who becomes a focal point of discussion on a social media platform (particularly Twitter).

What is a synonym for "main character"?

Common synonyms include: evangeline, ivanhoe, ledgeman, macbeth, mulder, narrative subject.

noun

noun ·Rare ·Advanced level

Noun

1
A person who becomes a focal point of discussion on a social media platform (particularly Twitter). Internet, idiomatic
"With his Jill Biden essay, Joseph Epstein became Twitter’s main character this month."
2
Used other than figuratively or idiomatically: see main, character.

"With his Jill Biden essay, Joseph Epstein became Twitter’s main character this month."