Tamamo

Tamamo no Mae, more commonly known as Tamamo, is the leader and queen of the kitsune/animal monsters, and one of the Four Heavenly Knights coming second alongside Erubetie when she, the other Knights and Alice clashed to decide who would be the next Monster Lord. Despite her young appearance, she is the most powerful animal-based monster and acted as a mother figure to Alice XV (Fifteenth) and Alice XVI (Sixteenth) when they were being raised to be the next Monster Lord; one rumor states that Tamamo was the mentor of the Monster Lord for five generations straight. Her hometown is Yamatai Village, and her favorite food is thin fried tofu.

In truth, Tamamo is one of the Six Ancestors, one of the very first creations of Alice I (First) and the ancestor bloodline of all animal monsters. Tamamo's right hands, Yao and Nanabi, seem to be aware of this fact. After the Great Monster Wars which happened a thousand years prior, Goddess Ilias tricked all of the Six Ancestors and Alice I into sealing themselves by claiming she would not harm their descendants, but Tamamo, ordered by Alice I to secretly watch over the Monster Lord line, was able to partially escape the seal by throwing her original body into subspace and transfer her spirit into a weaker body. She also developed Word of Dispel, which allowed her to temporarily regain full power for a short while. Tamamo monitored the Monster Lords from the shadows, preparing them against Ilias as well as preventing them from going rogue like the infamous Black Alice who coldly destroyed everything in her path. Though she and her brethren may appear nagging, Tamamo is nevertheless respected as a "second mother". Ilias seems to be unaware of this, or was too preoccupied to even notice.

She is a master of earth magic, using it to make herself immune to most attacks as well as dealing incredible amounts of damage. However, despite her main elemental attribute, Tamamo also uses fire in her Six Ancestor form. Tamamo is also an expert strategist, knowing how to devise plans and meetings to win wars. Also, like all the other Heavenly Knights and Alice, Tamamo is capable of teleportation and telepathy.

Tamamo is shown to be playful, fairly relaxed and easy going similar to Alma Elma, but unlike her, she is not malicious nor cruel. Instead of killing him, she keeps Luka as a husband.

She means no harm to humans, but, like Alice, she initially does not seem to care whatever happens to Luka. She does, however, help him more than once, teaching him how to properly use the power of the earth and actually seems satisfied of how strong he has become near the end of Chapter 2. She also seems to prefer the ideals of coexistence between humans and monsters.

Nanabi

Nanabi is a seven-tailed kitsune, making her the third strongest kitsune, and is said to be one of Tamamo’s right-hand soldiers. As a seven-tailed fox, she is far more powerful than Luka, who barely holds his own during their battle.

In Chapter 1, she follows her master into the Treasure Cave and guards the door at the end. Luka engages her and withstands her Seven Moons twice, however she puts him to sleep. Unfortunately for her, this unlocks his angelic powers and he is able to defeat Nanabi while asleep with various techniques that seem far too powerful for his current state. In addition, he seems to be able to naturally seal the seven-tailed kitsune without using the Angel Halo with one of the techniques, named Daystar.
 After Tamamo comes out of the door, she lacks the power to unseal Nanabi and tells her that she must wait. Nanabi eventually leaves along with Tamamo after a long discussion.

In Chapter 3, Nanabi is seen in the Monster Lord’s Castle with other kitsunes helping Tamamo decipher Promestein's discs that detail her evil plots.

Mimic

The Mimic is an Undead monster mimicking a treasure chest found in the Treasure Cave. She resembles a man-eating chest, lined with teeth when opened and revealing what seems to be a pale, undead girl with black hair and clothes. When closed she looks exactly like a normal chest.

Luka has the option whether to ignore fighting the Mimic. There is no reward, unlike other monsters, for skipping the fight with Mimic. However, Luka will gain experience if she is defeated, making the upcoming battle with Nanabi a little easier. Alice does chastise Luka for opening the chest in the first place, though.

Spider Girl

The Spider Girl is an Insect-type monster that dwells in the Treasure Cave in Chapter 1. She is seen about to eat the sealed Kitsune, but switches her sights on Luka, saying he is a better meal for her.

An insect-based monster from the spider family. Primarily living in caves, they create giant webs to catch prey. An exceptionally cruel predator, they eat man and monster alike.

Meda

The second opponent in the Treasure Cave after Kitsune, the Meda seems to be based off a sea louse. She has plenty of tentacles on her body which she can use to catch prey.

Depicted as insect-like and totally blind in the depths of the cave, she tends to speak in broken sentences, keeping noise to a minimum as she relies on hearing to find her prey. As she is blind, her eyes are perpetually closed, although she has an orb on her forehead that may be some kind of visual aid plus Luka also mentions about seeing her eyes if he loses to her.

She has a tendency to say the word “catch” quite often, though if this refers to Luka or is a regular part of her vocabulary is unknown.

Kitsune

The kitsune are a race of foxes with numerous tails, each tail signifying the power of the kitsune. This particular one has only two, which means it is relatively weak by monster standards; however she should not be underestimated, and normal humans would struggle to oppose her.

In Chapter 1, Luka encounters the Kitsune in the Treasure Cave, having been separated from her leader, Tamamo. She is too dimwitted and accidentally reveals to Luka to be assisting Tamamo, having revealed it when she met him. However, she refuses him to let him by.
 After a battle, the sealed Kitsune bites Luka and runs off, only to be trapped by a Spider Girl. Luka does the heroic act and defeats the Spider Girl, only to be bitten again.
When Luka meets Tamamo, she unseals the Kitsune and his heroic act from earlier allows him to claim the Poseidon’s Bell.

In Chapter 2, after Luka averts the crisis in Yamatai Village, then returns to the town and heads to the Fox Shrine, the same Kitsune from the Treasure Cave is in Tamamo’s place, and recognizes the "hero" from before. She is then bullied by Alice who picks her tails and steals her thin fried tofu.

In Chapter 3, after Luka averts the crisis in Yamatai Village again and returns to the town's Fox Shrine, the Kitsune is still there. Alice then gives her tofu, but it turns out to be too spicy for her to handle.
 Later, Kitsune is seen in the Monster Lord’s Castle, helping Tamamo decipher Promestein's discs that detail her evil plots.

Roper Girl

The Roper Girl is a infamous man-eating monster, known for its cruelty. One is is encountered by Luka en route to Iliasport.

A meat eating monster that prefers to live in caves and tropical areas. An extremely cruel monster, it considers humans to be nothing but food. Even among other man-eating monsters, it is known for its cruelty.