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 John Barrowman Malcolm Merlyn Guest Star Eric Floyd Markov Guest Star Colton Haynes Roy Harper Guest Star Manu Bennett Slade Wilson Guest Star Celina Jade Shado Guest Star Sebastian Dunn Edward Fyers Guest Star Roger Cross Detective Lucas Hilton Guest Star Byron Mann Yao Fei Guest Star Colin Salmon Walter Steele Guest Star Jarod Joseph Alan Durand Guest Star Emily Bett Rickards Felicity Smoak Guest Star Greg Berlanti Executive Producer Marc Guggenheim Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer John Behring Director Drew Z. Greenberg Writer Wendy Mericle Writer