Niklaus “Klaus” Mikaelson

Klaus is the illegitimate son of Esther and a werewolf; his stepfather Mikael hated him for it all his life. As an Original vampire he carried a curse that kept his werewolf side suppressed, until he breaks it in Mystic Falls and becomes the first hybrid.

In The Vampire Diaries he is the big antagonist, in The Originals the lead: cruel, vain, artistic and terrified of being abandoned. The birth of his daughter Hope changes him more than a thousand years before had.

In the series finale Klaus takes the dark magic from Hope into himself and dies together with Elijah. For Hope he remains ever-present in Legacies.