In the Lightning Thief the antagonists are Luke, Cronus (or Titans but mainly Cronus), Zeus, Hades, Ares, and some other people working for the Titans.
P.S.- if this is for school don't just watch the movie, because it is nothing like the book. The movie tried and failed to clash the books of the Percy Jackson series.
Lightning Thief
the is nobody named Gregory in the lightning thief
No.The lightning thief is only words.
Luke Castellan stole the lightning bolt
Twilight has more pages than The Lightning Thief.
Luke was... He hid it in the shield he gave Percy....
Becuase he is the lightning thief
He plays a protagonist for the whole Lightning Thief book, then it is revealed that he´s a bad guy.
Luke Castellan, a son of Hermes.
the lightning bolt was stolen from Zeus.
The Sea of Monsters
Yes there is.