Nimue was a genetically modified human created by the Syndicate criminal organization as part of the Knight Project. Unlike her fellow operatives, Nimue was not a true of Tobias Lensky and was instead created from modified strains of DNA from Lensky and the SPARTAN-II supersoldier Vinh-030. As a girl Nimue was handed over to the mercenary David Kahn for training. Under Kahn's expert guidance, she became an extremely proficient assassin, well-versed in virtually every method of killing imaginable. She would become one of the Syndicate's most lethal operatives, honed into a living weapon to carry out the criminal empire's bidding.