Madison Reyes. Popular It girl of Sunset High. When Harrison Osterfield, playboy and bad boy enters the scene, she realises she's falling for him, a bad boy. When news spreads that he's the leader of a gang, her interest grows. She lets him induct her to the gang as it's secret enforcer, Shadow Valkyrie. Walker Scobell and Freya Scott. She thought nothing could tear them apart. She was wrong. So wrong. Finding out her father had got a job in a completely different state, she says goodbye to him for some time. Twelve years later, she's back, transferring to his school. Having grown up and matured, will they recognise each other? Freya Jackson, Percy Jackson's elder sister. Fleeing home, she meets Thalia, Grover, Annabeth and Luke. Getting to camp, she announces herself as the first of Poseidon's two half-blood children.