kira's one of the most important, interesting, central characters of ds9. i think its a fine example. and if not you should go complain about the person who said lily on How i met your mother too ...
Someone else complained about the Lily example. I didn't see the point in piling on.
Leonard McCoy's one of the most important, interesting, central characters of TOS. But I'd never assume he was "the" main character of that show.