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 Kevin Alejandro Sebastian Blood Guest Star Bex Taylor-Klaus Sin Guest Star Caity Lotz Sara Lance Guest Star Dylan Bruce Adam Donner Guest Star Jesse Hutch Officer Daily Guest Star Ana Mercedes Maya Resik Guest Star Dylan Neal Dr. Anthony Ivo Guest Star Richard Keats Dr. Lockhart Guest Star Greg Berlanti Executive Producer Marc Guggenheim Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Glen Winter Director Wendy Mericle Writer Beth Schwartz Writer