I study guys like you for a living. I know more about you than you know about yourself.
~ Derek Morgan

Derek Morgan is a Supervisory Special Agent with the FBI's Behavioral Analysis Unit.  For a time, he was acting as the chief of the BAU, taking over as Hotch stepped down temporally.  He specializes in explosives, tactics, fixations, martial arts, and Obsessive behaviors.

He is portrayed by Shamar Moore.