Stephen Amell Oliver Queen Actor Colin Donnell Tommy Actor Katie Cassidy Laurel Lance Actor David Ramsey John Diggle Actor Willa Holland Thea Queen Actor Susanna Thompson Moira Queen Actor Paul Blackthorne Detective Quentin Lance Actor Lane Edwards Peter Declan Guest Star Colin Salmon Walter Steele Guest Star Emily Bett Rickards Felicity Smoak Guest Star Byron Mann Yao Fei Guest Star Roger Cross Detective Lucas Hilton Guest Star Annie Ilonzeh Joanna De La Vega Guest Star T.J. Ramini Jason Brodeur Guest Star Kirby Morrow Matt Istook Guest Star William Vaughan Rob Scott Guest Star John Barrowman Malcolm Merlyn Guest Star Genea Charpentier Izzy Declan Guest Star Glenn Ennis Ankov Guest Star Lesley Ewen Judge Moss Guest Star Christie Laing Carly Diggle Guest Star Greg Berlanti Executive Producer Marc Guggenheim Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Vincent Misiano Director Moira Kirland Writer Lana Cho Writer