Cast & Characters of The O.C. >> Michael Cassidy (Zach) Michael Cassidy was born December 1982 and is from Portland, Oregon. He is a new actor and the O.C. is his first major role. 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.