Oni Masks originate from Japan and were created by good Chi wizards to seal Oni generals within. The masks were then scattered to the four corners of the Earth.
Oni Masks can each summon a different tribe of Shadowkhan once the mask is attached to a host's face, but if all nine Masks are brought together in one location, the Oni spirits are set free, summoning enough Shadowkhan to engulf the Earth in eternal darkness.
If worn too long the masks will possess the wearer until he/she is consumed by the demon's psyche. Depending on how much of the mask is worn by the host, the Shadowkhan will only have that much of them summoned.
Each mask has a different tribe of Shadowkhan and a different removal ingredient. The removal spell also requires a lizardtail, wolfbane, sulfur root, and left eye of newt.
|Ninja Khan||Japanese Steel||Chow|
|Razor Khan||Japanese Silk||Ratso|
|Bat Khan||Japanese Rice||Scruffy|
|Sumo Khan||Rare Japanese Seaweed||Captain Black|
|Samurai Khan||Japanese Cherry Blossom||Finn's butt|
Tentacle of Japanese Octopus
|Crab Khan||Tears of Japanese Monkey||Valmont|
|Mini Khan||Japanese Fish||Hak Foo|
|Mantis Khan||Japanese Leaves|
|All||Hair of a Japanese Samurai||Tarakudo|