Grant Gustin Barry Allen, The Flash Actor Candice Patton Iris West Actor Danielle Panabaker Caitlin Snow Actor Carlos Valdes Cisco Ramon, Vibe Actor Tom Cavanagh Dr. Harrison Wells Actor Jesse L. Martin Detective Joe West Actor Jessica Parker Kennedy Nora Actor Hartley Sawyer Ralph Dibny Actor Chris Klein Cicada Actor David Sobolov Gorilla Grodd Guest Voice David Hayter King Shark Guest Voice Zibby Allen Dr. Tanya Lamden Guest Star Dan Payne Shay Lamden Guest Star Greg Berlanti Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Sarah Schechter Executive Producer Stefan Pleszczynski Director Eric Wallace Writer Lauren Certo Writer