Chris Downey Creator, Writer John Rogers Creator Noah Wyle Harry Sullivan Actor, Writer, Director Beth Riesgraf Parker Actor, Director Gina Bellman Sophie Devereaux Actor Christian Kane Eliot Spencer Actor Aleyse Shannon Breanna Casey Actor Aldis Hodge Alec Hardison Actor Max Baker Billy the Gent Guest Star Rob Benedict Dr. Daniel Gray Guest Star Jonathan Medina Paul Orozco Guest Star Alanna Masterson Kira Simone Guest Star Garrett Coffey Luke Stewart Guest Star Ralph Brown Ramsey Guest Star Kate Eastman Paige Stewart Guest Star Jeffrey Vincent Parise Hank Hogan Guest Star Christopher Gorham Richard Prosper Guest Star Anand Desai-Barochia Dr. Phineas Dunbar Guest Star Eric Nenninger Austin Kurlander Guest Star Melanie Hutsell Renee Fontenot Guest Star Alexandra Park Astrid Pickford Guest Star Erin Ruth Walker Emma Camore Guest Star Dean Devlin Executive Producer, Writer, Director Kate Rorick Executive Producer, Writer Marc Roskin Executive Producer, Director Josh Schaer Writer Jill Weinberger Writer Chuck Maa Writer Alayna Heim Writer Danielle Nicki Writer Milena Govich Director Marshall Tyler Director