noun as in protagonist
This unique seat was occupied by the principal player, who wore a humorous wig and a brilliant and expensive scarlet costume.
The principal player endeavoured to behave as though under the illusion that he was alone in his glory, but he failed.
The principal player seemed to be a large man—also in khaki—with a loud voice.
At the end of the lists is a spring-board, on which the principal player stands.
From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.