Grant Gustin Barry Allen, The Flash Actor Candice Patton Iris West Actor Rick Cosnett Eddie Thawne 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 Wentworth Miller Leonard Snart, Captain Cold Guest Star Emily Bett Rickards Felicity Smoak Guest Star Greg Berlanti Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Sarah Schechter Executive Producer Glen Winter Director Geoff Johns Writer Kai Wu Writer