Stephen Amell Oliver Queen, Green Arrow Actor David Ramsey John Diggle, Spartan Actor Emily Bett Rickards Felicity Smoak, Overwatch Actor Katie Cassidy Laurel Lance, Black Siren Actor Rick Gonzalez Rene Ramirez, Wild Dog Actor Juliana Harkavy Dinah Drake, Black Canary Actor Echo Kellum Curtis Holt, Mister Terrific Actor Colton Haynes Roy Harper, Arsenal Actor Kirk Acevedo Ricardo Diaz Actor Greg Berlanti Executive Producer Marc Guggenheim Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Gordon Verheul Director Onalee Hunter Hughes Writer Sarah Tarkoff Writer Elizabeth Kim Writer