Who is the real lightning thief in Percy Jackson?

In "Percy Jackson & The Olympians: The Lightning Thief," the real lightning thief is revealed to be Luke Castellan, a demigod son of Hermes. He orchestrates the theft of Zeus's lightning bolt in an attempt to incite a war among the gods and to seek revenge against them for their neglect of demigods. Luke's betrayal highlights themes of loyalty and the complexities of heroism within the story.