Ezra Miller: Barry Allen / The Flash
Michael Keaton: Bruce Wayne / Batman
Sasha Calle: Kara Zor-El / Supergirl
Michael Shannon: General Zod
Ron Livingston: Henry Allen
Maribel Verdú: Nora Allen
Kiersey Clemons: Iris West
Jeremy Irons: Alfred Pennyworth
Antje Traue: Faora-Ul
Saoirse-Monica Jackson: Patty
Rudy Mancuso: Albert
Temuera Morrison: Thomas Curry
Sanjeev Bhaskar: David Singh
Sean Rogers: Gary
Kieran Hodgson: Sandwich Guy
Luke Brandon Field: Al Falcone
Ian Loh: Kid Barry
Karl Collins: Henry's Lawyer