In the Percy Jackson series, the Greek gods are central. Percy is a demigod, son of a Greek god. The giants are ancient enemies of the gods. In the books, Percy and his friends often face challenges related to the gods' feuds and the resurgence of the giants. The story weaves together Percy's adventures with the mythology of the Greek gods and the threat of the giants.
The Percy Jackson graphic novels are generally in an order that follows the original book series. For example, 'The Lightning Thief' graphic novel comes first, which sets up the basic story of Percy finding out he's a demigod and starting his adventures. It's important to read them in this order to fully understand the character development and the overarching plot as it unfolds across the series.
The Percy Jackson graphic novels are ordered in a way that aligns with the events in the prose novels. 'The Lightning Thief' comes first as it sets up the whole world and the main character's journey. After that, 'The Sea of Monsters' continues Percy's adventures. Each subsequent graphic novel builds on the previous one, introducing new characters and challenges, like 'The Titan's Curse' which follows the pattern and further develops the story.
No. In the official Percy Jackson series, Percy is the son of Poseidon. Fanfiction often takes creative liberties and creates alternate storylines, but these are not part of the original canon.