Niklaus Mikaelson

Niklaus Mikaelson (A.K.A Klaus) is the husband of Amelia, and the father of her children, Hope, Nick and Finn.

He is the main protagonist/anti-hero of The Vampire Princess, and a secondary character in The Tribrid Girl.

Klaus was the biological son of Ansel and Esther Mikaelson, the step-son of Mikael, and nephew of Dahlia.

Klaus is the maternal younger half-brother of Freya, Finn, Elijah, and the maternal older half-brother of Kol, Rebekah and Henrik Mikaelson. Klaus was the uncle of Rebekah and Marcel's son Niko, Elijah and Diana's daughter, Rose and Freya and Keelin's son, Nik.

The adopted father of Marcel Gerard, an orphan boy he rescued and eventually turned into a vampire. The real father of Hope, Nick and Finn.

Klaus was primarily a member of the Mikaelson Family, and a member of an unnamed Family of Werewolves. He was connected to the Labonair Family, a royal werewolf family via his daughter, who is married to the Alpha's son. and a member of the North East Atlantic Pack as well as an unnamed Witch Family.