I think the protagonists would lead an ordinary life, if they were not shown on screen, what do you?

Question

Here's a mind bender for you.

I mean the main characters in a movie.

Answer 1

Protagonist:

1 a : the principal character in a literary work (as a drama or story) b : a leading actor, character, or participant in a literary work or real event
2 : a leader, proponent, or supporter of a cause : CHAMPION

Yep, you're right.

:-)