Kiefer Sutherland Tom Kirkman Actor, Executive Producer Natascha McElhone Alex Kirkman Actor Adan Canto Aaron Shore Actor Italia Ricci Emily Rhodes Actor LaMonica Garrett Mike Ritter Actor Kal Penn Seth Wright Actor Maggie Q Hannah Wells Actor Tanner Buchanan Leo Kirkman Guest Star Virginia Madsen Kimble Hookstraten Guest Star Malik Yoba Jason Atwood Guest Star Kevin R. McNally Harris Chochrane Guest Star Michael Gaston Gov. John Royce Guest Star Mckenna Grace Penny Kirkman Guest Star David Guggenheim Executive Producer, Writer Simon Kinberg Executive Producer Mark Gordon Executive Producer Nicholas Pepper Executive Producer Suzan Bymel Executive Producer Aditya Sood Executive Producer Jon Harmon Feldman Writer Brad Turner Director