Demons

Location
Demons are found primarily in Gehenna, though can be found in any place around the world the same way humans can. Anywhere that a demon feels their needs can be met, they will be found there.

Appearance
Demons share their appearances with humans. Their hair and eye colors however tend to stay on the darker side such as brown and black. To add to this, their eye color may rarely be red or even yellow.

General Religion
Most demons refuse religion for the simple fact that their origin was caused by them being cast out of various paradises for questioning authority, so they feel that their existence is intended to be a rage against the heavens.

Society
Demons are mostly asocial creatures, preferring to depend only on themselves. Occasionally they will seek help, however demons have an almost innate sense to not trust each other, whether or not they will actually be betrayed. However, most demons pay heed to their ruler not out of respect, but out of knowledge that he can and will punish them if he is challenged.

Combat
Demons are physically stronger than humans in most ways, and can tolerate more pain as well. In terms of actual combat, demons almost always prefer swords and occasionally their bare hands if they feel they outmatch their opponent enough. As an aside, many demons find themselves fond of torture, so will almost deliberately prolong their battles just to inflict more suffering and pain on the victim.

General Attitudes
Self-Seen:

Demons see themselves as evil and have no qualms with such notions, and see all other races as failures and would love nothing more than to see them eradicated. They also see themselves as being independent even of each other as well, as noted above.

How They Are Perceived:

Most of the world sees demons as evil, cruel, and brutal beings. Many also believe they are personifications of evil, and either greatly fear them, or wish to destroy them all.