Michael C. Hall Dexter Morgan Actor, Executive Producer Jack Alcott Harrison Morgan Actor James Remar Harry Morgan Actor David Zayas Angel Batista Actor Peter Dinklage Leon Prater Actor Krysten Ritter Mia Lapierre , Lady Vengeance Actor Uma Thurman Charley Actor Neil Patrick Harris Lowell , The Tattoo Collector Actor Clyde Phillips Executive Producer Scott Reynolds Executive Producer Tony Hernandez Executive Producer Lilly Burns Executive Producer Marcos Siega Executive Producer Monica Raymund Director