Stephen Amell Oliver Queen, Green Arrow Actor David Ramsey John Diggle, Spartan Actor Willa Holland Thea Queen Actor Emily Bett Rickards Felicity Smoak Actor John Barrowman Malcolm Merlyn Actor Paul Blackthorne Quentin Lance Actor Echo Kellum Curtis Holt, Mr. Terrific Actor Josh Segarra Adrian Chase, Prometheus Actor Rick Gonzalez Rene Ramirez, Wild Dog Guest Star Joe Dinicol Rory Regan, Ragman Guest Star Madison McLaughlin Evelyn Sharp, Artemis Guest Star Tyler Ritter Detective Billy Malone Guest Star Carly Pope Susan Williams Guest Star Greg Berlanti Executive Producer Marc Guggenheim Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Antonio Negret Director Wendy Mericle Writer Beth Schwartz Writer