Tom Payne Malcolm Bright Actor Michael Sheen Dr. Martin Whitly Actor Bellamy Young Jessica Whitly Actor Lou Diamond Phillips Gil Arroyo Actor Halston Sage Ainsley Whitly Actor Aurora Perrineau Dani Powell Actor Frank Harts JT Tarmel Actor Keiko Agena Dr. Edrisa Guilfoyle Actor Ana Gasteyer Tilda Guest Star Brian Stokes Mitchell Everett Sterling Guest Star Kasjan Wilson Young Bright Guest Star Molly Griggs Eve Blanchard Guest Star Sathya Sridharan Dev; Ashlie Atkinson : Leanne Guest Star Richard Topol Doctor Guest Star Anna Eilinsfeld Girl Guest Star Greg Berlanti Executive Producer Sarah Schechter Executive Producer Chris Fedak Executive Producer Sam Sklaver Executive Producer Lee Toland Krieger Executive Producer