Grant Gustin Barry Allen, The Flash Actor Candice Patton Iris West Actor Danielle Panabaker Caitlin Snow Actor Jesse L. Martin Detective Joe West Actor Danielle Nicolet Cecile Actor Kayla Compton Allegra Garcia Actor Brandon McKnight Chester P. Runk Actor Jessica Parker Kennedy XS Guest Star Carmen Moore Kristen Kramer Guest Star Christian Magby Deon Owens, Still Force Guest Star Jon Cor Mark Blaine, Chillblaine Guest Star Rachel Drance Taylor Brown Guest Star Mika Abdalla Tinya Wazzo Guest Star Meghan Gardiner Renee Wazzo Guest Star Morena Baccarin Gideon Voice Greg Berlanti Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Sarah Schechter Executive Producer Eric Wallace Director Lauren Barnett Writer Christina M. Walker Writer Nathaniel Blume Original Music Blake Neely Original Music Brenton Spencer Cinematographer