Who steals the lightning bolt in Percy Jackson?
In the book? Ares. In the movie? Luke.
According to the novel written by Rick Riordan, the lightning bolt was in the bag pack Ares (or Lord Ares to be polite) told Percy, Annabeth, and Grover to find the whole time. However, the lightning bolt would only appear in the bag pack if Percy and his friends gets are in the Underworld. Basically, Percy just took out the lightning bolt and gave it to Hades (Lord Hades).