Here's the thing: There isn't something wrong with someone being 'popular' - which is a way of saying 'well liked' but with vaguely negative connotations.
People look at other players who are better liked, or whose characters are better liked, and perceive an unfair situation. Maybe it is unfair, but the solution isn't to complain that people like someone else better than you. Whether that's true or not, and whether it is fair or not, complaining about it probably isn't going to help things. It isn't those character's jobs to be less well liked, and it isn't really everyone else's job to like you more. Plus, chances are there everyone is unpopular with someone - but there are really a fairly high number of RPers these days. You'll probably find a crowd where you'll fit in.