Djinn, or genies, possess their own magical powers, but are sometimes forced into a kind of servitude wherein they must serve others, sometimes in limited bursts.
The true origins of the djinn have not been fully revealed. Some say that the magical beings were born on another planet or realm. Others say that Lilith, the mother of monsters, birthed them on Earth.
Out of the Bottle
All djinn are magical creatures with powers far beyond that of mortals. While some are able to live freely and wield their power as they see fit, others find themselves bound to objects (like lamps or books). When called forth, the djinn usually has to grant a variety of wishes, some-times a limited number, sometimes not. Other djinn seem to be linked to people instead of objects. The extent of their magical powers remains a mystery, but seems to vary from one to another.
Masters and Commanders
Given the unique nature of their relationships with humans, djinn have been known to resent those whose wishes they grant, sometimes reveling in how short-sighted mortals can be. There have been individual rivalries and enmities, but as a whole the djinn have not had any major enemies or allies known to the world-at-large.
Phenomenal Cosmic Power, Itty Bitty Living Space
Throughout existence, there have been a number of different kinds of djinn. While the exact powers and even their level of servitude differ, they all possess some form of magical abilities and are often sworn to serve another. It remains unclear if the djinn are exactly the same as the Jinni of Asgard, the Jinn, or the Djinne, but they all seem to share similarities.