Djinn

The Djinn were a race of blue-skinned travelling collectors who would buy and sell anything. They went from world to world in search of profit. (AUDIO: The Destroyer of Delights)

In Arabian myth, the Mal'akh were referred to as "djinn". (PROSE: The Book of the War) In The Thousand and Second Night, the djinn were the Yssgaroth. (PROSE: Head of State, Interference)