Zero is the assassin of the Alpha Council, and they hire his services to remove problematic people that interfere with their lives in the Alpha Runes. Zero is cold and apathetic to those around him, able to detach himself from his emotions skillfully that even puts the rest of the council to a shameful standard. Zero unnerves everyone in his presence with his cold stare and lack of concern for others, making people always walk on eggshells in fear of upsetting the assassin.

Zero, despite his emotional detachment, cares deeply for Nina as a daughter, and even spared a human once who he saw take his own life, taking pity on the miserable child. He is a man of work, and enjoys and takes pride in it, once even sharing a friendship with Samuel Gray while he worked in the same industry as him.