Nika was an adolescent Russian metahuman girl who was born with the power to permanently assimilate the skills and knowledge of anyone who died in her hands. is one of the world's greatest fighters who was invited to participate in a tournament by the League of Lazarus. She is the sidekick of Lord Death Man. Flatline has the ability to absorb and retain the skills of those who die near her, or at least a portion of their abilities, which she has used to increase her martial prowess