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He then returned to his home that year and continued living with Klaus and his siblings Elijah, Rebekah, and Kol at their compound until their father Mikael, the Original Vampire vampire-hunter, arrived to town at his and Rebekah's summoning and subsequently chased his children out of town.
The Mikaelsons' absence left a power vacuum in the city's supernatural community, which allowed Marcel to eventually rise to leader of the vampire faction while he continued to build up their numbers by carefully turning humans into more of his kind.
Because Marcel's mother elected not to name him until she was sure he would survive the fever and ended up succumbing to it before she could choose one for him, Klaus gave him the name "Marcellus", meaning "little warrior", which was later shortened in "Marcel".
From this moment on, he lived with the Mikaelson Family for the majority of the next century until he enlisted in the Army during World War I and was deployed to France until 1919.
Marcel also left Davina in Genevieve's care in order to protect her.
Marcel had began his plan to reclaim the French Quarter with Thierry, Diego, and many other vampires by his side leading to an all out war: Marcel's Army vs. The war was interrupted due to Hayley Marshall (who was then pregnant with hers and Klaus' baby daughter) being kidnapped by the witches, as well as the witches' allies Francesca Correa and her brothers, who revealed they were not actually human, but untriggered werewolves descended from a member of the former Guerrera Pack.
He also began to rekindle his romance with Rebekah.
Marcel was born in New Orleans, Louisiana in 1810 to a female slave and her master, the Governor of Louisiana.It had been revealed in the series that Marcel is the one who drove the werewolves out of the French Quarter in the 1990s, and was also the man who hired Brynne Deveraux (not knowing she was actually possessed by Celeste Dubois) to place the original Crescent Curse on the Crescent Wolf Clan.Despite the strife between the vampires and the werewolves, Marcel was said to have been friends with Hayley's mother and father, and when he found them dead and found the young baby Hayley in her cradle, he arranged for Father Kieran to find her an adoptive family and get her out of town, purposely excluding her from her family's curse due to his rule against hurting children.Marcel is the adoptive son and former protégé of Niklaus Mikaelson, who turned him into a vampire.He is also the adoptive brother of Hope Mikaelson and father figure of Davina.