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 Keiynan Lonsdale Wally West, Kid Flash Actor Neil Sandilands Clifford DeVoe, The Thinker Guest Star Kim Engelbrecht Marlize DeVoe, The Mechanic Guest Star Greg Berlanti Executive Producer Andrew Kreisberg Executive Producer David Nutter Executive Producer Sarah Schechter Executive Producer Eric Wallace Writer Thomas Pound Writer David McWhirter Director