Guest Stars Emily Bett Rickards as Felicity Smoak John Barrowman as Malcolm Merlyn Colin Salmon as Walter Steele Jamey Sheridan as Robert Queen Chin Han as Frank Chen Ray Galletti as Dominic Alonzo Co Starring Byron Noble as Harold Backman Vaughn Clements as Armed Guard Simon Bradbury as Dealer Stephen Powell as Sharp Gangster Andrew Hedge as Pit Boss Lee Tichon as Controller