Sam Worthington

Perseus

Liam Neeson

Zeus

Ralph Fiennes

Hades

Rosamund Pike

Andromeda

Bill Nighy

Hephaestus

Edgar Ramírez

Ares

Toby Kebbell

Argenor

Danny Huston

Poseidon

Sinéad Cusack

Clea

John Bell

Helius

Lily James

Korrina

Alejandro Naranjo

Mantius

Freddy Drabble

Apollo

Kathryn Carpenter

Athena

Matt Milne

Elite Guard No. 1

Birkett Turton

Elite Guard No. 2

Spencer Wilding

Minotaur

Jorge Guimerá

Theodulus

George Blagden

Soldier 1

Caoilfhionn Dunne

Woman 1

Paul Warren

Hermes (uncredited)