Judith is the daughter of Lori Grimes and Shane Walsh, and the half-sister to Carl Grimes. The product of an affair, Shane was killed by Lori's husband, Rick Grimes. Lori later died during a caesarean section performed by Maggie Rhee to save Judith's life. Despite not being their biological child, Rick and his second wife Michonne adopted Judith as their own. Judith appears to be a kind, intelligent and caring young girl, mature beyond her years who is more than willing to protect others.