Rolin Jones Creator, Producer Ron Fitzgerald Creator, Producer Matthew Rhys Perry Mason Actor, Producer Juliet Rylance Della Street Actor Chris Chalk Paul Drake Actor Shea Whigham Pete Strickland Actor Eric Lange Gene Holcomb Actor Justin Kirk Hamilton Burger Actor Diarra Kilpatrick Clara Drake Actor Katherine Waterston Ginny Aimes Actor Hope Davis Actor Paul Raci Actor Fabrizio Guido Actor Peter Mendoza Actor Mark O'Brien Actor Robert Downey Jr. Producer, Executive Producer Susan Downey Producer, Executive Producer Timothy Van Patten Producer Regina Heyman Executive Producer Jessica Lowrey Director Nina Lopez-Corrado Director Fernando Coimbra Director Jack Amiel Writer Elizabeth Baxa Writer Michael Begler Writer Pedro Peirano Writer Niko Gutierrez-Kovner Writer Marialy Rivas Director