Fiennes will play Hades the menacing god of the underworld who aims to take over Neeson's all powerful, all knowing, God of Thunder Zeus and father to Perseus (Sam Worthington).
Liam Neeson and Ralph Fiennes will play the most powerful of Gods on each side of good and evil in the remake of the Classic "Clash of the Titans," directed by Incredible Hulk reboot master Louis Leterrier.
Liam and Ralph join Mads Mikkelsen, Gemma Arterton and Alexa Davalos in this remake which begins filming at the end of April in the U.K.