Stephen Amell Oliver Queen Actor Katie Cassidy Laurel Lance Actor Willa Holland Thea Queen Actor Colton Haynes Roy Harper Actor David Ramsey John Diggle Actor Emily Bett Rickards Felicity Smoak Actor Manu Bennett Slade Wilson Actor Susanna Thompson Moira Queen Actor Paul Blackthorne Detective Quentin Lance Actor Caity Lotz Sara Lance , The Canary Guest Star Dylan Bruce Adam Donner Guest Star Dylan Neal Dr. Anthony Ivo Guest Star Teryl Rothery Jean Loring Guest Star Navid Negahban Al Ow-Al Guest Star Curtis Braconnier Dark Archer Stick Guest Star Ron Selmour The Butcher Guest Star Greg Berlanti Executive Producer Marc Guggenheim Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Wendey Stanzler Director Jake Coburn Writer Drew Z. Greenberg Writer