On the 17th February 1993, the US military discovered how to travel between realms. A particular unit in the army, called FT-89, made up of of the most advanced soldiers were sent to discover these realms. Out of the places they found, all were uninhabited, except one. This realm was called Kodailon.
The creatures that owned the place resembled what humans would refer to as ‘demons.’ In fact, many soldiers mistook the place for Hell. The creatures were actually called Kanatara and Morabons - two races of the same species. Overall, the species were called Skolosar.
They had pale skin, horns on their heads and wings on their back. Many had warrior-like markings on their face and body, and they spoke in a language called Enochian. It is impossible to speak Enochian with human vocal cords.
Kodailon had the right conditions for human survival so the military tried to take over the land, which resulted in a fierce war with the Skolosar.
FT-89 was lead into battle by the general of the army, Thomas Jasper, and the Skolosar were lead by their king, Nanzun Skiasora. The war lasted a total of 8 years, Nanzun Skiasora being killed midway through.
It ended with the detonation of a bomb, called D2-12-08, nicknamed "The Devil." This bomb had the power to obliterate an entire planet, which it did. Kodailon was completely destroyed.
Some humans and even more Skolosar were able to escape Kodalion, before the detonation of the bomb. The remaining Skolosar now live, as humans, on earth, as they have the ability to take on human form.
There have been a number of sightings of figures that look like demons reported.
FT-89 is still an active unit, even 24 years after the war begun, and specialise in hunting 'demons.'
Will your character be part of the Skolosar, those hunting them or someone who was caught up into the conflict?