The Flash

Grant Gustin
Barry Allen / The Flash

Danielle Panabaker
Dr. Caitlin Snow / Killer Frost / Dr. Caitlin Snow / Frost / Dr. Caitlin Snow / ...

Candice Patton
Iris West-Allen / Iris West

Jesse L. Martin
Joe West

Carlos Valdes
Cisco Ramon / Vibe / Cisco Ramon / Cisco Ramon / Mecha-Vibe

Tom Cavanagh
Harrison 'Harry' Wells / Harrison 'H.R.' Wells / Harrison Wells / Harrison 'Sher...

Danielle Nicolet
Cecile Horton

Kayla Compton
Allegra Garcia / Maya

Hartley Sawyer
Ralph Dibny / Elongated Man

Brandon McKnight
Chester P. Runk

Patrick Sabongui
David Singh / Mirror Chief David Singh

Keiynan Lonsdale
Wally West / Kid Flash / Wally West

Jessica Parker Kennedy
Nora West-Allen / XS / Mystery Girl

Rick Cosnett
Eddie Thawne / Dr. Malcolm Gilmore

Michelle Harrison
Nora Allen / Speed Force Nora / Joan Williams / Joan Williams / Speed Force Nora...

Morena Baccarin
Gideon (voice) (uncredited)

John Wesley Shipp
Henry Allen / Jay Garrick / The Flash / Barry Allen / The Flash (Earth 90)

Jon Cor
Mark Blaine / Chillblaine

Stephanie Izsak
Officer Daisy Korber / Captain Daisy Korber / Uni #1

Tom Felton
Dr. Julian Albert