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 Juliana Harkavy Dinah Drake, Black Canary Actor Katie Cassidy Laurel Lance, Black Siren Actor Rick Gonzalez Rene Ramirez, Wild Dog Actor David Nykl Anatoly Knyazev Guest Star Sydelle Noel Samanda Watson Guest Star Venus Terzo Dr. Schwartz Guest Star Greg Berlanti Executive Producer Marc Guggenheim Executive Producer, Writer Andrew Kreisberg Executive Producer David Nutter Executive Producer Laura Belsey Director Adam Schwartz Writer Beth Schwartz Writer