Guide

This is just a little guide to explain what is going on.

Blood Exchange: the contract between a Demon and Tamer. This contract turns a Watcher into a Tamer. The Tamer and Demon literally exchange blood, shown by the Tamer taking on the Demon's tattoos. A terminated Blood Exchange (either by loss of tattoos or Death's interference) will always result in the Tamer's death (the Demon will be fine...unless it gets killed first...) except in the case of Low-Level Demons because they have very little power. However, the Tamer's lifespan is shortened.

Death Dealers: They are high ranked elites with some of the strongest of Demons. They work as the City's security and now and then train new Death Dealers or work as mentors for upcoming Tamers. 

Demon: a creature of Hell created by one of the Demon Queens. All Demons have a dragon or serpent like tail the longer the tail the stronger they are. Demons that are tamed are unable to disobey a direct order from their tamer. They must protect and keep their tamers alive at all cost. 

Demon Princes/Princesses: the strongest Demons in Hell. They are only under orders from the Queens, and only the ones who created them, and the rare humans who tame them. There are five princesses and Princess each, ranking themselves as one as the strongest and five as the weakest within their court. Each one holding one court of their own. 

Death: still the ruler of Sinful City. He is an immortal human who has journeyed to hell and lived to tell the tale. His son plans to complete these two tasks as his father's successor, but is already immortal and will have to take his sister on in order to claim the title.

Duchess/Duke: They are the mid level demons within a Demon Princess/Prince's court

Elements: There are four main elements that demons can control, water, fire, earth and air, and one special element gifted to "favorites". All demons can control and harness one element, plus they all have on unique ability that makes them stand out from other demons. 

Gates: Special portals that allow a Tamer to call forth their demon, normally with the use of their own blood dropped upon the ground and calling the name of the demon they can be summoned. Most Demons are unable to appear in the world of the humans unless it is a Night Hunt or they have  Demon Tamer.

Halfbreed: A half demon, normally killed during the process of birth. An exception was made for the sister of the Demon King.  

Hellion: These are the most commonly Tamed Demons. It is highly respectable to Tame one of them. The more powerful ones usually holds positions in the Demon Courts.

Heightened Emotion: A side effect of a Taming. The fresh blood exchange can cause the emotions of both the Demon and Tamer to mingle within one body. If it is not released, it can drive the Tamer mad. The higher power the Demon possesses, the stronger the side effect can be.

Hell Queens: the creators of Demons. They are angels who followed the Devil down to Hell. They have a government system in the form of a council, but its control is shaky at best. They, as a sister team, are the creators of all Demons but the King. the eldest was their creator, but the youngest is the one who trained and raised them all. They are the Strongest Queens in Hell and reject the council. 

Imp: Basically, the lowest form of Demon that comes out mostly during the first part of night hunt. They are the easiest to Tame. Some Tamers Tame multiple Low Levels and get new ones when those Demons die. The Blood Exchange between Tamers and Imp is not strong enough to kill off a Tamer.

King of Darkness: He is a demon that goes by many names but to the Humans he is known as the Devil or Satan to the demon's he is Lord Lucifer or just King. He is the strongest and deadliest demon to ever be placed in hell. There is no other strong enough to stand up to his might all simply bow down to him.

Night Hunt: The only time when UnTamed Demons can get onto the Earthly plane. Characterized by a bleeding moon and Hellfire all around the streets and other lines on Earth, Night Hunt can happen every night, or not at all for years. It depends on the power in Hell and the Blood Lust of the Demons. For this reason, many Tamers take on nocturnal sleep patterns. Night Hunt is split into two parts: the first happens before Midnight. This part is filled with mostly Imps and the occasional Hellion. The Second Part is after Midnight and where more Hellions come out. Watchers are not allowed out during the second part of Night Hunt. Note: Demon Princes and Princesses rarely come out during Night Hunt; they have subordinates bring them what they desire, but once in a while come out to play. 

Phantom: The title of the Demon who works with Death, acts as an ambessor between the demons and the humans. 

Tattoos: the markings of a Demon. Every Tamer takes on the Tattoos of a Demon during the Taming in a mirror or reflection on their body. A Demon is not a Demon if it does not have Tattoos. Note: even the half-demon, has Tattoos, a set of wings on her back. Unlike normal pureblood Demons though, hers are not on her arms where they can be accessed by Watchers.

Watcher: a human with the capability to Tame a Demon who has not yet done so.

Witches: They came to the world of the humans about the same time, the Prince of Darkness fell from the heavens. Unlike normal demons witches were not bound or limited to living in Hell with the Devil. They roam the human world slaughtering and killing human and so Sin City was created by  Death and the Tamers and their demons partnership was born.