Nikki Mikaelson is a thousand-year-old vampire-witch, the half-sister of the Originals. She is half-French and half-American, born from a secret affair between Esther Mikaelson and a powerful French witch—her father. Despite the circumstances of her birth, Nikki has always been nothing less than a true Mikaelson. Her siblings have never seen her as a half-sister, only as family, and their bond with her is unbreakable.