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 Emily Kinney Brie Larvan Guest Star Reina Hardesty Joss Jackam Guest Star Troy James Peter Merkel Guest Star Greg Berlanti Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Sarah Schechter Executive Producer Kristin Windell Director Sam Chalsen Writer Joshua V. Gilbert Writer