Cast & Characters of The O.C. >> Summer Roberts (Played by Rachel Bilson) Summer is Marissa's best friend and the ultimate Newport Beach party girl. Exuding Brash self confidence and sly sexuality, Summer always speaks her mind, always gets what she wants, and never has any regrets. Spoiled by her father since the divorce of her parents, Summer is an irresistable, magnetic narcisist. She is growing up fast in a town whose principle values are money, and she's loving every minute of it. 2003 Virtual Rain. This is an unofficial fansite with no relation to FOX, Warner Brothers, or any of their associates. This is just a fansite opened for the purpose of exposing the show "The O.C" to new fans across the internet. Original copyright of all photos remain to FOX/WB and are used purely for the purpose of enjoying the show and furthering its fanbase.