Victor Garber Professor Stein, Half of Firestorm Actor Brandon Routh Ray Palmer, Atom Actor Arthur Darvill Rip Hunter Actor Wentworth Miller Leonard Snart, Captain Cold Actor Dominic Purcell Mick Rory, Heat Wave Actor Caity Lotz Sara Lance, White Canary Actor Franz Drameh Jefferson "Jax" Jackson, Half of Firestorm Actor Ciara Renée Kendra Saunders, Hawkgirl Actor Amy Louise Pemberton Gideon Voice Stephanie Corneliussen Dr. Valentia Vostok Guest Star Martin Donovan Zaman Druce Guest Star Voytek Skrzeta Mikhail Arkadin Guest Star Greg Berlanti Executive Producer Marc Guggenheim Executive Producer Andrew Kreisberg Executive Producer Phil Klemmer Executive Producer, Writer Chris Fedak Executive Producer Sarah Schechter Executive Producer Antonio Negret Director Sarah Nicole Jones Writer