Apollite:

A member of a race cursed by the god Apollo. They cannot be out in daylight and they must live on the blood of each other. On their 27th birthday, they die a slow and painful death over the course of a twenty-four hour period unless they decide to turn Daimon and prey on human souls. So long as the human soul is alive inside them, they can live. The moment the soul expires, they die. Therefore, they are always trying to find new souls to take.

Charonte:

A race of demons from Atlantis who are extremely violent and amoral. But they have a very interesting code of ethics.

Daimon

An Apollite who refuses to docilely die over a curse s/he had no part in creating. They feed on human souls and fight the Dark-Hunters. They are mistakenly called vampires, but vampires are a different entity.

Dark-Hunter

An ancient warrior who sold his/her soul to the Greek goddess Artemis for a single act of vengeance. Now they protect mankind from the Daimons who want to claim our souls.

Demonkyn

Another word for demon or demon-kind. It can also be a term of affection between demons, symbolizing brotherhood.

Dream-Hunter

They are the gods of sleep who were cursed by Zeus to feel no emotion whatsoever. But they carry within them a dark secret that could completely shake the world in which they live. The Oneroi branch are often helpers to the Dark-Hunters.

Fringe Guard

Bounty hunters sent after preternatural beings.

Onethalamos

The room where the three leaders of the dream gods make policy. It's a fairly large conference room.

Oracle:

A human who speaks with the gods. They tend to be really crusty/cranky people. We think it's because they don't get enough sleep. Too many voices in their head.

Squire:

A human who is employed by a Dark-Hunter or a human who has skills that make a Dark-Hunter's life a bit easier. They have an entire organization set up and are willing to die or kill to protect the secret of the DH world.

Strati

The Katagaria equivalent to an Arcadian Sentinel, i.e. super warriors who are even stronger than the rest of their people. Aside from the difference between their subspecies, the Strati do not have the facial markings of the Sentinels. The Arcadians refer to them as Slayers, but Slayers to the Katagaria are those who have lost control of their powers and have been driven insane by them. A true Slayer is hunted and put down by the Strati.

Were-Hunter

Originally part of the Apollite race, a Were-Hunter's DNA was magically spliced with animals so that they wouldn't die at age 27. Now they are shape-shifters who are embroiled in a war against each other and they live for centuries, but are not immortal.