Demons

Demons are a race in. They are a beastly species that originate from the planet Eden.

Biology and appearance
Demons are an otherworldly species that were brought to Euclid through unknown means. Demons possess immense physical and psychic prowess rivaled only by the angels. Their appearances vary widely, with some being massive and others the same size as a human. The species has two sexes, female and male, each with varying eye and hair colors.

Before the War
Demons have been involved in a war with angels for control of Eden for several centuries. The war started because of a conflict between demons and their creator, Elo.

When the demons attempted a rebellion against Elo, Elo called upon the angels to fight against them. The angels were already a rival species of the demons, so they sided with Elo. The war worsened when Xeren, another deity, sided with and supported the demons. Xeren managed to slay Elo, further heightening the tension between the two species.

After an intervention from the Powers, Xeren was successfully slain. Shortly after Xeren's death, his son, Kaz, aligned himself with the demons. As a result of his talent and being Xeren's offspring, Kaz quickly became the leader of the demon army. With both Xeren and Elo dead and Kaz joining the demon's army, the war between demons and angels continued on for several centuries.

Due to unknown circumstances, demons later appeared on the planet Euclid in 0 TP. Wanting the planet for themselves, demons attacked Euclid and killed a quarter of the human population.

The Great War
Shortly after the arrival of demons, Gabriel Alchemilia created a portal to Eden and caused angels to come to Euclid. The majority of the population on Euclid thought that the angels would side with them and assist in the battle against demons. The opening of the portal, however, ended up in disaster when the angels were not as benevolent as thought. Though the angels continued their war against demons, they considered humans animals and killed them as necessary.

The war between demons and angels continued on Euclid, wrecking havoc on the planet and humans as the two species tried to destroy each other.