Zero 8

Zero 8 is a long haired zero who has a calm and calculating personality. Unlike the other zeros, zero 8 appears to be mentally stable. In her past life, she was Riful. She exhibits less of her sadistic mindset and is more calculating and knowledgeable, cursing herself for not knowing what she knows now and doing what she did before she died. She hopes to advise Rae in reforming Staff and appears to see Rae as a worthy match yet doesn't lie about her nature or about facts and is somewhat impulsive, albeit much less than she was 500 years ago. Riful is in charge of the body and in her free time, she plays chess.

Zero 8 met Rae in her cell while playing chess. She offered her help in giving Rae all the advantages she could get for the upcoming war. She confirmed the existence of Eternals, saying she was killed by one (Priscilla), and the drach, although in name only. She also got Zero 5 to help Rae with her rats, guiding Rae to Melaine.