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 Carlos Valdes Cisco Ramon Guest Star Casper Crump Vandal Savage Guest Star Stephanie Corneliussen Dr. Valentina Vostok, Soviet Firestorm Guest Star Joseph David Jones Green Arrow Guest Star Nick Gracer Yuri the Bear Guest Star Voytek Skrzeta Mikhail Arkadin 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 Dermott Downs Director Beth Schwartz Writer Grainne Godfree Writer