The daughter of Jimmy, Castiel's true vessel and a hunter. After her father's departure, Claire's mother went off to find herself and left her in the care of her grandmother. Her grandmother died and Claire struggled in group homes as well as developing a rebellious nature and resentment to the angel who ruined her life. She fell in with a bad crowd before she encountered Castiel again and refused his kindness, even stealing from him and his allies. Claire soon forgave Castiel after he helped her find her lost mother Amelia Novak but she was orphaned when her mother was killed by a Grigori. Claire personally avenged her mother and decided to be a Hunter before she was sent to live with the Mills Family. Though Claire struggled to adjust with them as well as hunting, she came to see them as her family and she became a competent hunter even helping Sam and Dean.
She was a werewolf but was cured.
Her first love was Kaia.