He plays a protagonist for the whole Lightning Thief book, then it is revealed that he´s a bad guy.
Logan Lerman plays Percy Jackson and Jake Abel plays Luke Castellan in the Lightning Thief .
The main characters are Percy Jackson, Annabeth Chase, and Grover Underwood. Luke Castellan and Chiron also play important roles in the book.
Jake Abel is playing the part of Luke Castellan in the Percy Jackson movie, the Lightning Thief. It has not been confirmed if he will continue to play Luke in the next Percy Jackson movies.
Ares was not cast.
Logan Lerman
Kevin McKidd
hera was not featured much i believe in the 1st book or movie... there for she has no thoughts that we know of...
Sean Bean is set to play Zeus.
Catherine Keener
Alexandra Diddario (dadarrio? I don't know...)
Alexandrea plays in the Percy Jackson and the Olympians the lightning thief
I'm not sure they will have a Hermes portrayed in the movie