Hazel Levesque is the demigod Daughter of Hades and the mortal Marie Levesque. She is the youngest of the forbidden children of the Big Three, and currently, the only one not revealed to the Olympian Council.
Hazel lives in New Orleans with her mother, Marie, and her mother ran a fortune telling shop and helped people get in contact with their dead relatives. That was how she attracted Hades' attention. She was one of the few mortals capable of communing with ghosts.
Unlike her sibling's, Bianca di Angelo and Nico di Angelo, Hazel inherited more powers than just control over the dead. Though she could control her farther's subjects, she also had a unique level of control over the riches under his control.