He is a forbidden child, a child of the Big Three. He is the son of Poseidon. He is in love with Annabeth. He is dangerous when he is angry.

She is Athena's daughter. She is wise, strategic, very intelligent, and she makes everyone obey. Some people are afraid of her. She drives Percy crazy, but she loves him.

He is also a forbidden child, child of Big Three. He is the child of Hades. He has crossed Tartarus twice. He is very powerful, he is called Ghost King. He is cold and no one has seen him smile after Bianca.

He is the son of Hephaestus. He loves his boat and the prow which is the living head of his dragon Festus. He always has something handy to tinker with. He likes to flirt. He talks too much.

He is also a forbidden child, child of Big Three. He is the son of Jupiter. He is pretor with Reyna. He is calm and calculating, but he is very dangerous when he gets angry.He is Thalia Grace's brother. He can fly. He likes Piper and Leo.

He's Mars' son. He's strong and can transform into any animal. He's very protective of his girlfriend, Hazel.

Daughter of Pluto, she can control stones. Nico's sista. She is very kind. She loves Frank.

She is Bellona's daughter. She is pretor. She is a formidable warrior and she likes to be in charge.