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 Stephen Amell Oliver Queen, Green Arrow Guest Star Joseph David Jones Connor Hawke, Green Arrow Guest Star Jamie Andrew Cutler Grant Wilson, Deathstroke Guest Star Ryan Jefferson Booth Andre Guest Star Greg Berlanti Executive Producer Marc Guggenheim Executive Producer, Writer Andrew Kreisberg Executive Producer Phil Klemmer Executive Producer Chris Fedak Executive Producer Sarah Schechter Executive Producer Steve Shill Director Ray Utarnachitt Writer