Oni (Roswell Conspiracies)

The Oni are a race of demonic shapeshifters inhabiting Earth.

Biology
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. Oni are capable of ingesting a whole human alive, and even suggest that they are able to devour Banshee, though doing so would give them indigestion.

Culture and society
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.