Nico Di Angelo is a son of Hades. He can also commune with the dead. He has a black sword and can kill montsers with it.
Annabeth Chase is a daughter of Athena. Annabeth is very wise and she is located in Tartarus with another character.
Frank Zhang is a son of Ares. He can transform into different animals. He can also shoot a bow and arrow very well.
Percy Jackson is a son of Poseidon Percy Jackson is a very famous hero. He has a sword named Riptide. Riptide is disguised as a pen. Percy is in Tartarus with his girlfriend, Annabeth. They are trying to close the doors of death.
Leo is a son of Hephaestus. He is a master of tools and he has a dragon head that once had a body. He can summon fire and launch it at people.
Hazel Levesque is also a daughter of Hades. She can summon minerals and great gems. She also had a mom that sold those gems and minerals