A little rundown on my vision of the races:
Demons
These are extradimensional beings of so-called evil. They take many physical shapes, though most are static (stuck in one form). Some, however, have the ability to change their forms. the Demons have effectively claimed the north-central part of the city for the most part. As with all the territories, this is hardly set in stone. Demons organize themselves into seven Houses representing: Avarice, Envy, Gluttony, Lust, Sloth, Vanity, and Wrath. Each represents a different philosophy as to how to corrupt mortals and other supernaturals. So far, they have no particular allies or special enemies, though they have made pacts with some covens, clans, families, and individuals. All Demons are born that way.
Mixed Breeds
There are no mixed breeds, it’s impossible. Don’t even ask. :)
Mortals
Mortals are your average, everyday people. Some align themselves with one side or another. Others work to hunt and destroy all of the supernaturals, or a particular group. Others are simply innocent bystanders. No mortals can have any special powers, except true faith in some deity.
Shifters
This race is composed of werebeasts of all types. Typically, Shifters have 2-5 forms, all of the same species. That is, a Shifter can’t have Human, Raven, and Wolf forms. (S)He can have Human, Near Human, Wolf-Man, Prehistoric Wolf, and Wolf forms though. They have laid claim to the southwestern part of the city, but fight constantly to maintain that territory. Among themselves, Shifters create packs (2-10 individuals) which form septs (2-10 packs). An alpha pack leads each sept and an alpha sept supposedly leads them all. Each pack also has an alpha male/female leading it. They are allied with the Teeps and hold a grudge against the Vampires. Shifters are all born that way, with change starting at puberty.
Spirits
All sorts of entities from ghosts to ascended beings fit into this race. None have physical bodies of their own, but they can possess mortals with some effort. This process is easier with a willing subject. A much more difficult process is manifestation. This requires a lot of energy, can only be maintained for a short time, and is not usually fully corporeal. Spirits don’t really control any territory as such, but they tend to congregate around cemeteries, holy sites, and their old homes. Some are inextricably tied to a particular place or object (they can’t go more than a few feet from the place/item). Amongst themselves, they have no organization. All Spirits have to be made through death, ascension, or a combined force of will on the part of mortals. They are allied with the Witches and oppose the Teeps for their own reasons.
Teeps
Anyone with psionic powers is a Teep. This includes: Astral Projection, ESP, Electrokinesis, Psychic Vampirism, Psychokinesis, Telepathy, and Teleportation. Usually an individual will be strong in one power and weak in one or two others. They claim the southeast part of the city, usually. Teeps form schools, led by a master who teaches the students to unlock and control their powers. Teeps are generally allied with the Shifters and oppose the Spirits. An individual must be born a Teep, though instruction is required in order to control and hone the raw talent.
Vampires
Wampyrs, Leeches, blood suckers. Vampires are the classic undead blood feeders. Myriad abilities are ascribed to them, but no Vampire possesses all of them. They claim the northwest part of the city as their turf. This was the only spot left after the others moved. Resistant to change, the Vampires use a semi-feudal system of families (those “turned” by each other) and clans (5-10 families) to organize themselves. The masters or lord of these clans meet rarely to decide the fate of others. This organization is generally patriarchal in nature. Vampires are allied with the Witches and hate the Shifters (former allies) with a passion. They can only be created by draining a mortal’s blood entirely, then feeding it back to the ex-mortal on the verge of death.
Witches
These are magic wielders of both sexes. They use rituals and incantations to manipulate mana for supernatural effects. Typically this requires a focus, some ritual, and some words of power. They claim the northeast as their primary turf, but this is a questionable claim. Among themselves, witches create covens of three to nine members who unite under a leader who represents them in talks with other covens. Witches are almost entirely matriarchal. They are allied with the Spirits and Vampires but hate the “charlatan” Teeps with a passion bordering on obsession. One must be born a witch, though training is necessary in order to harness the power.