The O.C.'s core four are undoubtedly the heart of the series. Marissa is the troubled socialite; Summer, her fiery BFF; Ryan, the brooding outsider; and Seth, the token underdog. But there is, in fact, life outside of their circle, and that included a rotating ensemble of minor (and under-appreciated) O.C. characters.
Of course, there are plenty of people who rightfully faded into the background. Remember the vengeful Dean Hess, whose sole mission in life seems to be ruining Ryan's? Or Jess Sathers, Trey's rabble-rousing fling who lures him into a world of trouble? And there are even more who overstay their welcome. Just think about the list of obsessive men who become dangerously fixated on Marissa (looking at you, Oliver, Johnny, and Volchok), or consider Charlotte, the manipulative con-woman who tries to take advantage of Kirsten and Julie at their most vulnerable. Even Taylor Townsend, who's bumped from the sidelines to the main cast in the wake of Marissa's death, is just as obnoxious as she is endearing.
But amid all of those duds, there are a handful of characters that never got their rightful day in the sun. They're just relegated to the fringe as Marissa, Summer, Ryan, and Seth get all the love. 10 years later, they definitely deserve a shoutout.