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 Jeffrey Nordling Frank Bertinelli Guest Star Jessica De Gouw Helena Bertinelli , The Huntress Guest Star Caity Lotz Sara Lance , The Canary Guest Star Dylan Bruce Adam Donner Guest Star Artine Tony Browne Hendrick Von Arnim Guest Star Chelah Horsdal Kate Spencer Guest Star Lochlyn Munro Captain Stein Guest Star Sean Rogerson Peter Guest Star Sarah Dugdale Becky Guest Star David Nykl Anatoly Knyazev Guest Star Greg Berlanti Executive Producer Marc Guggenheim Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer John Behring Director Mark Bemesderfer Writer A.C. Bradley Writer