Monsters

Monsters are one of three main races of the Monster Girl Quest setting, the others being the humans and the angels, and they make up the majority of enemies.

Biology
All monsters are combinations of human and non-human features. There is immense variation in the ratio of human to nonhuman features: they range from mostly human (e.g. elves, which appear human except for their pointed ears) to mostly non-human (e.g. Large Spider, who resembles a spider with a human head).

Pure monsters are all female. Consequently, they require males of other species in order to reproduce. Human men are by far the most commonly used for this purpose. Some monsters (such as Queen Ant) are capable of reproducing using nonhuman males, but this results in lower-quality offspring. There are rare cases of a monster giving birth to a male human with monster blood. The royal line of Sabasa arose from the union of the first Sabasa King and the ancient monster Sphinx. It is also apparently possible to transform a human man into a monster, according to Sphinx, but this has not been further explained.

Monsters have longer lifespans than humans; for example, Sphinx and Tamamo are both over a thousand years old.

Culture
Monsters usually have a leader, a Queen of some sorts of their species, but all monsters are ruled over by the Monster Lord, who exerts power to maintain order of the entire monster race. However, monsters often tend to do their own thing, twist the commands of their lord into their own ideals, or even rebel against the Monster Lord.

Monsters are often described as "sinners" and almost all of them care little about anyone but themselves. They are infamous in the entire world due to their lustful nature, raping men for their own sexual pleasure, enjoyment, food, or even reproduction, and will thus almost always attack men first. Their personalities differ, although many are very sadistic and/or carefree.

History
Monsters were born out of creatures and objects that were genetically mutated by the dark genes of Alice I. However, Goddess Ilias, the manifestation of light, grew jealous of Alice I because the mutation allowed her to create creatures at a much more faster and controlled rate.

One thousand years ago, Ilias started the Great Monster Wars, a historical war between the monsters and angels. While the monster force was said to be superior, the goddesses eventually realized their constant clashing would ultimately destroy everything they created. However, Ilias continued her onslaught and forced Alice I to surrender, on the condition that Ilias would not attack monsters further. However, Alice I included a counterbalance in the seal: if Ilias were to break her promise and kill a large number monsters, the seal would break and Alice I would be freed. Ilias, however, worked to find a way around this. To keep the darkness of the world in check, she recruited to her side Black Alice (a descendant of Alice I with intense hatred for humanity) and had Promestein create the Chimera monsters.

As the years passed, monsters and humans eventually came to coexist. Ilias could not stand for that and successfully drove a wedge between the two by destroying Remina, one of the most famous coexisting cities, thus causing the two races to blame each other for the city's destruction. Furthermore, Ilias appeared to her religious humans and ordered them to kill monsters and the Monster Lord, falsely claiming that they are her "failed creations." Heroes were deployed to combat the monsters, however there are very few humans who can actually defeat any monster on even terms; this is supported by Granberia's Monsterpedia Entries.

However, coexistence was not entirely shattered. Iliasburg accepted the Four Bandits, harpies and humans aid one another at Happiness Village, mermaids and humans live together in Port Natalia, the Sabasa royalty are proud of their monster bloodline, various species of monsters and humans coexist in Grand Noah, humans in Yamatai Village worship monsters as gods, ants and artificially-made monsters agree to live peacefully with the humans of Grangold, and humans willingly have sex with the succubi of Succubus Village. People such as Luka, Alice XV and Alice XVI, and Tamamo all dream of both races living in peace and harmony. Throughout the human Luka's journey, he manages to resolve the conflicts between humans and monsters.

Luka was tasked by Ilias herself to defeat the Monster Lord, Alice XVI, but after seeing the world with her he could not bring himself to it and turned against Ilias. The evil goddess decided to take matters into her own hands and sent her angelic army, coupled with Black Alice's rebel monsters and Promestein's chimeras, to assault the entire world and eliminate the coexisting humans and monsters. However, the monsters and humans joined forces and fought back. Moreover, Black Alice and Promestein betray Ilias in their plan to become the ultimate entity of light and darkness by incorporating themselves with the power of angels and monsters; Black Alice absorbs Ilias into her body while Promestein injects herself with the drug White Rabbit that contains Alice I's genes. Luka fights and defeats the two, but Ilias emerges from Black Alice's remains and reveals her true master plan was to become the ultimate entity and assimilate the power of monsters and Alice I into her body. The humans and monsters fighting all over the world against Ilias's forces pray for Luka and Alice XVI's victory, and with their combined powers they put an end to Ilias once and for all. Finally, there is true peace between humans and monsters.