Tsukuyomi

Tsukuyomi is one of the Next Dolls created by Promestein. She was specifically built to defeat Tamamo, having being built from her cellular structure and naturally inherited her deadly magic and earth abilities.

Biography
At the end of Chapter 2, after Ilias declares war and Promestein lays siege on the Monster Lord’s Castle, the scientist presents Tsukuyomi, who mentions that tonight is a full moon.

Continuing on in Chapter 3, Tsukuyomi looks on as the battle progresses. However, after Tamamo forces Promestein to order a retreat by scaring the lesser chimera, Tsukuyomi is extremely dismayed and ashamed, unable to fulfill her purpose in defeating the Heavenly Knight.

After Luka averts the crisis in Plansect Village, Tsukuyomi is revealed to be the mastermind behind the attack, having used brainwashing magic inherited from Tamamo to possess Queen Alraune and have the village kill itself through an internal war. But because of Alra Priestess refusing to follow her predecessor, the plan went astray, Tsukuyomi has to kill everyone on her own accord, which she finds "boring." Queen Alraune tries to attack, but Tsukuyomi applies the earth to instantly blow off the attacking vines and delivers a fatal punch that causes Queen Alraune to collapse. The chimera then taunts Alra Priestess to use the opportunity to kill Queen Alraune and take her seat, but is interrupted when Queen Alraune traps Tsukuyomi in a flower and administers the Aztec Rose, the deadliest poison known in the world that instantly kills off cells, but because of Queen Alraune's weakened state, the result would kill her. Prepared to die for her brethren, Queen Alraune completes refining the poison and delivers it, but Tsukuyomi is still surprisingly alive, stuttering and spasming repeatedly. The chimera then collapses, and with a loud thud, she vanishes.

Tsukuyomi retreats to the Drain Lab and apologizes to her creator, still spasming. Promestein is impressed with the Aztec Rose's ability and feels that she should not have overlooked it.

Trivia

 * She seems to be based on the Tsukiyomi-no-Mikoto, a Moon god in Shinto mythology, referenced by her name and the fact she references the full moon when she appears.