Stephen Amell Oliver Queen, Green Arrow Actor David Ramsey John Diggle, Spartan Actor Willa Holland Thea Queen Actor Emily Bett Rickards Felicity Smoak Actor Paul Blackthorne Quentin Lance Actor Echo Kellum Curtis Holt, Mr. Terrific Actor Josh Segarra Adrian Chase, Prometheus Actor John Barrowman Malcolm Merlyn Guest Star Dolph Lundgren Konstantin Kovar Guest Star David Nykl Anatoly Knyazev Guest Star Madison McLaughlin Evelyn Sharp Guest Star Greg Berlanti Executive Producer Marc Guggenheim Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Kevin Tancharoen Director Brian Ford Sullivan Writer Emilio Ortega Aldrich Writer