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 West-Allen Actor Hartley Sawyer Ralph Dibny Actor Chris Klein Cicada Actor Kyle Secor Caitlin's father Guest Star Greg Berlanti Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Sarah Schechter Executive Producer Chris Peppe Director Kristen Kim Writer Joshua V. Gilbert Writer