Niklaus Mikaelson

Niklaus Mikaelson, commonly known just as Klaus, is the Original Hybrid. The illegitimate son of the witch Esther Gallio and her werewolf lover Ansel, both of whom were unaware that external forces had taken advantage of their union to make the then-embryonic Klaus, the living prison and vessel of the Archangel Samael, who remained dormant within Klaus for the next 20 millennia until his death, releasing the angel. Klaus is the biological father of Gabriel Mikaelson. Klaus's innate angelic qualities merged with the essence of Archaeus within his body to make Gabriel a spiritual Nephalem, making them his spiritual fathers.