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.

When the Four Heavenly Knights press forward to the Ivory Towers, Tsukuyomi ambushes her counterpart. Tamamo struggles and Tsukuyomi gloats until the kitsune mentions about Promestein rebelling against Ilias and the Next Dolls were actually created for that purpose, having read the data from her discs. Tamamo states that this is just her enemies repeating the mistakes during the Great Monster Wars; Tsukuyomi assumes she's bluffing until she uses Word of Dispel, revealing her true form as a member of the Six Ancestors. Tsukuyomi realizes that she is truly a sacrificial pawn of Promestein before being completely annihilated by Tamamo's fire attack, with no trace of the chimera left.

Monsterpedia Entry
"A Next Doll, one of the strongest Chimeric Monsters created by Promestein. Made from genetic material gathered from hair collected from one of Tamamo's fluffy tails. After the base clone was made, various mechanical upgrades were made to increase her performance.

''To be able to contain the incredible strength of the earth imbued in Tamamo, her body had to be focused on defense. To protect against Tamamo's magic, anti-magic charms and devices were installed throughout her body. Able to use power of the earth and Kitsune magic, she is powerful all around. She suffers from some speed performance due to all the heavy armor, but it isn't much of an issue."''

Battle Overview
Tsukuyomi is fought by Tamamo, not Luka. After lowering Tsukuyomi's health by a third, Tamamo gains the ability to use Word of Dispel and obliterate her chimera counterpart.

If Tamamo is defeated, Tsukuyomi leaves to rape Luka using her vagina until he dies.

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.
 * While Hainuwele and Amphisbaena both have a debilitating weakness that ends up leading to their loss, Tsukuyomi's noted weaker speed performance isn't relevant to the result of her battle against Tamamo. Like in Arc-En-Ciel's case, Tsukuyomi loses due to an unexpected skill being shown by her opponent.