Afrits...
The origin of this type of djinn in the Trilogy.

An afrit is a powerful evil spirit or gigantic and monstrous demon in Arabic mythology. An afreet is often another name for a djinn, sometimes for similar entities. They like to lurk in large stretches of wilderness and frighten travelers with eerie sounds. Also spelled afreet, ifreet, ifrit, efreet. Afrits in common mythology are spirits that embody fire. They consider themselves superior to all races because they supposedly "came first," and they resent deeply that humans have found magical ways to take control over them. Even when tasked, they show an ironic and malicious attitude, tending to subvert their masters' orders every time they can. They often appear as individuals of superhuman beauty and strength, but are very difficult to deal with. They also appear in the Qu'ran and The Arabic Nights.