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 Seth Gabel The Count Guest Star Emily Bett Rickards Felicity Smoak Guest Star Byron Mann Yao Fei Guest Star Janina Gavankar Detective McKenna Hall Guest Star Sebastian Dunn Edward Fyers Guest Star Serge Houde Judge Brackett Guest Star Eugene Lipinski Alexi Leonov Guest Star Eileen Pedde Doctor Guest Star Jeffrey C. Robinson Deathstroke Guest Star Greg Berlanti Executive Producer Marc Guggenheim Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Wendey Stanzler Director Wendy Mericle Writer Ben Sokolowski Writer