Percy Jackson Is the son of Posiedon.
Annabeth Chase is a daughter of Athena.
Grover Underwood is a satyr.
Tyson is a son of Posiedon and pecy's brother.
He is a son of Kronnos.
Posiedon is the God of the Sea. Son of Kronnos.
Zeus is the God of the Sky. Husband of Hera. Son of Kronnos.
Hades is the God of the Underworld. Husband of Persephone Goddess of Nature. Son of Kronnos.
Luke Castellan is a son of Hermes.
Kronnos's scythe.