1 CSI, Speedster and an FBI Agent? by CSIRide-Kirk Barry Allen had hidden the fact that he was adopted from almost everyone he knows. He was born Fox William Mulder, an acclaimed X File agent and believer in the paranormal, but when the Reverse Flash threatens his friends in the FBI, Barry turns to Caitlin and Cisco to help him and Dana Scully (his old partner and love interest) to defeat them. Set in Season 2 with Jay Garrick.