Victor Garber Professor Stein, Half of Firestorm Actor Brandon Routh Ray Palmer, Atom Actor Dominic Purcell Mick Rory, Heat Wave Actor Nick Zano Dr. Nate Heywood, Citizen Steel Actor Caity Lotz Sara Lance, White Canary Actor Franz Drameh Jefferson "Jax" Jackson, Half of Firestorm Actor Maisie Richardson-Sellers Amaya Jiwe, Vixen Actor Amy Louise Pemberton Gideon Voice Tala Ashe Zari Adrianna Tomaz Actor Neal McDonough Damien Darhk Actor Keiynan Lonsdale Wally West, Kid Flash Actor Evan Jones Dick Rory Guest Star David Sobolov Gorilla Grodd Guest Voice Dianne Doan Anh Ly Guest Star Peter Hall Lyndon B. Johnson Guest Star Lawrence Green Isaac Newton Guest Star Greg Berlanti Executive Producer Marc Guggenheim Executive Producer Andrew Kreisberg Executive Producer Phil Klemmer Executive Producer Chris Fedak Executive Producer Sarah Schechter Executive Producer Ray Utarnachitt Writer Tyron B. Carter Writer Mairzee Almas Director