The Oni are a race of demonic shapeshifters inhabiting Earth in Roswell Conspiracies.
The Oni resemble the demons of Japanese mythology and are characterized with horns, sharp teeth, various skin colors, and four arms. Oni have biological shapeshifting abilities.
Like the Vampires, the Oni have ingratiated themselves in human society and the majority of the Oni race play a large part in Japanese organized crime. Most Yakuza operations in fact are directed by the Oni, with a few of their loyal human subordinates aware of their masters extraterrestrial origins.