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 Kacey Rohl Alena Guest Star Tobias Jelinek Boots Guest Star Michael Emerson Cayden James Guest Star Greg Berlanti Executive Producer Marc Guggenheim Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Gregory Smith Director Sarah Tarkoff Writer Emilio Ortega Aldrich Writer