An unnamed woman was the mother of Billy Hargrove.
Billy's mother lived in California with her son Billy and her husband Neil Hargrove. She loved Billy and supported his surfing hobby, but Neil's abuse eventually drove her to abandon her son in order to escape. Billy tried to get his mother to come home, but not to avail. His mother's departure allowed Neil to gain full custody of Billy and abused him even further, turning him into a cruel violent bully. After Neil remarried a woman named Susan, Billy abused and took all of his anger out on his stepsister, Max who he blamed for his mother's departure.
She has shining, blue eyes and wavy, blonde hair. At the beach, she wore a long white dress with a blue and red flower, yellow sandals, and a hat with a blue ribbon.
Billy's mother was much kinder and loving to Billy than Neil was. She seemed to enjoy spending time with her son on the beach away from Neil. When she had enough of Neil's abuse, she divorced him, leaving Billy to be raised by his father.
|Season Three appearances|
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| ||E Pluribus Unum*|| ||The Battle of Starcourt*|
|Template:Familytree/Sam Mayfield||Susan Hargrove||Neil Hargrove|
|Max Mayfield||Billy Hargrove|