Stephen Amell Oliver Queen Actor Katie Cassidy Laurel Lance Actor David Ramsey John Diggle Actor Willa Holland Thea Queen Actor Emily Bett Rickards Felicity Smoak Actor Colton Haynes Roy Harper Actor John Barrowman Malcolm Merlyn Actor Paul Blackthorne Captain Quentin Lance Actor Peter Stormare Werner Zytle , Count Vertigo Guest Star Caity Lotz Sara Lance , The Canary Guest Star Austin Butler Chase Guest Star Cynthia Addai-Robinson Amanda Waller Guest Star Karl Yune Maseo Yamashiro Guest Star Brendan Taylor Anthony Walker Guest Star Greg Berlanti Executive Producer Marc Guggenheim Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Michael Schultz Director Jake Coburn Writer Emilia Ortega Aldrich Writer