_{[ supporting character sounds better than side character to him, or minor character, or even re-occurring character. ]}

Fuhaha— of course. Without me, who would the main characters bounce their wit off of? I'm vitally important in the series as the boke and have multiple tsukkomi to make the punch lines.

A room full of straight men isn't very entertaining.
_{[ he seems so proud that he plays the idiot role. Look at that smug smile. ]}

You seem like a heroine.