oni

Oni are the demonic monstrosities that make up the most powerful forces of the Shadowlands. Oni only gain a physical presence in the realm of mortals if spawned by an Oni Lord or by being summoned from Jigoku by someone willing to share their name in exchange for power. This could lead to an oni being found practically anywhere in the Empire, although they are most commonly found in the Shadowlands. If summoned within Rokugan they would remain with their master until their freedom was gained. A free oni would usually go on a rampage to express its happiness, and then if still alive migrate south into the Shadowlands. The personality of an oni is rooted in the bestiality of Jigoku, but some of its overlord or summoner can influence it. If spawned it can be very similar to it's overlord, but if summoned the oni will after prolonged co-existing with the summoner begin to act in its master's nature.