"Seaweed Brain" Child of Poseidon. Percy is sarcastic, but caring to the people he loves. He's willing to take quests, even when they put his life in danger, and tends to be very impulsive, especially when his friends are in danger. He frequently talks back to God's, often ruining potential allies. Dating Annabeth. He has dark brown hair, sea green eyes, and is tall and well-built. Percy is characterized by his sarcastic, smart sense of humor, and laid-back demeanor. His girlfriend Annabeth mentions that he is actually quite smart, but seems to act dumb. Percy is somewhat short-tempered and thus has trouble controlling his anger, such as when he sees bullying. He can be derisively sarcastic and moody, especially when someone tries to manipulate him or forces him to obey. He has the ability to control water.

Annabeth, daughter of Athena. Annabeth is smart and is the critical thinker of the group. Whenever she around she acts as Percy's "neutralizer". Like all Athena kids, she has an irrational fear of spiders. Blonde hair with stormy grey eyes, athletic build. Annabeth is very strong-minded and stubborn, shown to be incredibly determined and daring. Annabeth becomes reckless whenever a situation arises concerning Percy. In addition, Annabeth has also developed a fear of being separated from Percy for extended periods of time. Dating Percy.

Child of Hephaestus. Great-Grandchild of Sammy Valdez (Hazel's close friend during her original life.) Curly, brown hair and brown eyes. Latino. Wears magical tooolbelt and workshop attire. Always tinkering with something. mischievous, flirty, upbeat, resourceful, eccentric, and impulsive, and loves to tell jokes constantly, even if they aren't particularly funny. Even though he has a mischievous demeanor, he is actually quite insecure and has low self esteem. Has the ability to control fire.

Son of Jupiter Jason was originally the Praetor of Camp Jupiter alongside Reyna. He formed an alliance with Camp-HalfBlood and becomes apart of the Prophecy of Seven. Blonde haired and blue eyed with a scar on his lip. Jason Grace was a very responsible, kind, and open-minded person. Jason had a tough time figuring out who he was and who he wanted to be. He came to resent being a son of Jupiter and thought his parentage was trapping him into a destiny he couldn't control. Unlike his half-sister Thalia, he's able to fly. He can also control the skies, doing things such as summoning thunder. In a relationship with Piper.

Cherokee descent. Eyes that seem to be "changing colors" as described by Jason. Works hard to disprove the common stereotype of Aphrodite children. Her father is a movie star and her mother is Aphrodite. She's in a relationship with Jason but is close friends with Leo. Piper McLean is shown to be a very self-conscious but generally calm, intuitive, and caring young woman. She is also seemingly shy about her appearance and does not appreciate men gawking. Though generally easy going and warm, Piper occasionally lets her worries take over which cause her to mentally isolate herself and believe she is without help and singular in her struggles. She has the ability of Charmspeak.

Daughter of Pluto. Originally died in the 40's but was brought back as a second chance by her half brother Nico di Angelo. Recently started dating Frank. Leo reminds her of Sammy. Afro-American girl. Brown curly afro and eyes like jewels. From Camp Jupiter. She has the ability to control the earth. Hazel is bright and outgoing with a love for creativity and horseback riding. She is shown to be very protective and defensive of those she cares about Curse: Summoning deadly materials

Chinese descent, living in Canada. Child of Mars. Has a Buzzcut, brown eyes and a chubby build. From Camp Jupiter. Frank is very kind. He is a very good friend and is willing to give everyone a chance. He can become reckless for his friends. Because Frank is a son of Mars, Frank has a lot of anger and rage inside of him. He developed a fear of fire, made worse when his grandmother may have died in a fire. Because Frank is too powerful, being the son of Mars and being a descendant of Poseidon, Frank's life is connected to a piece of fire wood. If the stick ever burns up, Frank will die. Frank gave the stick to Hazel Levesque as he was told giving it to someone he trusts could prolong his life. Has the ability to shape-shift and has the Meleager curse.