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 Kasjan Wilson Young Bright Guest Star Scott Shepherd Dr. Coppenrath Guest Star Isabel Arranza Andi Guest Star Happy Anderson Curtis Guest Star Daniel Sunjata Quentin Guest Star Mary Van Arsdel Ilsa Guest Star Greg Berlanti Executive Producer Sarah Schechter Executive Producer Chris Fedak Executive Producer Sam Sklaver Executive Producer Lee Toland Krieger Executive Producer