Katherine McNamara Clary Fray Actor Dominic Sherwood Jace Wayland Actor Alberto Rosende Simon Lewis Actor Emeraude Toubia Isabelle Lightwood Actor Matthew Daddario Alec Lightwood Actor Isaiah Mustafa Luke Garroway Actor Harry Shum Jr. Magnus Bane Actor Alisha Wainwright Maia Actor Luke Baines Jonathan Morganstern Actor McG Executive Producer Todd Slavkin Executive Producer Darren Swimmer Executive Producer Michael Reisz Executive Producer Matthew Hastings Executive Producer Mary Viola Executive Producer Martin Moszkowicz Executive Producer Robert Kulzer Executive Producer