Grant Gustin
as Bartholomew Henry "Barry" Allen
Candice Patton
as Iris Ann West-Allen
Danielle Panabaker
as Caitlin Snow
Jesse L. Martin
as Joe West
Carlos Valdés
as Cisco Ramon
Danielle Nicolet
as DA Cecile Horton
Kayla Compton
as Allegra Garcia
Tom Cavanagh
as Dr. Harrison Wells
Tom Cavanagh
as Dr. Harrison "Harry" Wells / Earth-2
Brandon McKnight
as Chester P. Runk
Keiynan Lonsdale
as Wallace "Wally" West
Hartley Sawyer
as Ralph Dibny
Jessica Parker Kennedy
as Nora West-Allen
Rick Cosnett
as Eddie Thawne
Danielle Panabaker
as Frost
Tom Cavanagh
as Harrison Sherloque Wells
Jon Cor
as Mark Blaine
Tom Cavanagh
as Harrison "H.R." Wells / Earth-19
Tom Cavanagh
as Dr. Harrison Nash Wells
Chris Klein
as Cicada
Neil Sandilands
as The Thinker
Danielle Panabaker
as Khione
Efrat Dor
as Eva McCulloch
LaMonica Garrett
as The Monitor
LaMonica Garrett
as Mobius / The Anti-Monitor