Oni were violent Demon spirits with great strength and inherent magical abilities, prevalent in the Faewyld and subsequent Faewylds. In their natural form, Oni look like demonic Ogres though are slightly smaller in stature. They have skin that varies between hues of red, blue and white, and dark colored eyes with shining white pupils. They have long wild hair that is usually black or grey; however, pure white hair is not an uncommon sight, especially among the Pale Oni. They have a pair of short ivory horns protruding out of their forehead that grow longer as they age and their teeth and claws are jet black. The length of their horns is something Oni take pride in, to the point that even the most disheveled Oni are known to polish their horns on a daily basis. While Oni commonly take the form of other humanoid species to blend in, some Oni who live in harmony with other races, tend to take on hybrid forms, still appearing to be part of their host race, except with their horns protruding from their forehead, proudly visible to all. Oni were known to tamper with Fae and mortals dreams alike, giving them horrific nightmares and are even noted to have the ability to create dream planes to entrap their victims. Presenting such a danger to the Faewyld and Court of Verdance, the Oni were entrapped by the Archfey King Cernunnos and Philemon until their release during the Conjunction of The Realms by Prometheus. It is believed that an ancient artifact, known as the 'Mask of The Oni' is said to have the ability to create more of their kind and even possesses a unique control over them, making it highly coveted amongst the Oni.