Hibiki Mizusawa

水沢 響, Zeta

She is one of the 8 identical humans that created from genetic material collected from the male and female agents with the top results over three generations of agents who have gone through the facility. She develops romantic feelings for Fujimaru after she was told by Fujimaru that she is not just a clone but an individual. And later in Season 2 it appears that she and Fujimaru are in relationship.