The Oni Generals

The Oni Generals are a group of nine demons who are led by Tarakudo in season four of Jackie Chan Adventures.

History
In ancient times, Tarakudo, lord of all Oni and king of the Shadowkhan, along with his nine demon generals, terrorized Japan. Ancient Chi warriors carved masks and through use of good Chi spell ingredients, trapped the Generals in those masks. One was made for Tarakudo who found the mask and hid it in the Shadow Realm. His whereabouts were unknown afterwards as he was dormant for centuries. The masks were then scattered across the Earth. If united, the nine Oni generals would be released and summon an army of Shadowkhan to engulf the planet in eternal darkness which will cause all good magic to erode.

Powers
All Oni possess enhanced strength and can summon a different tribe of Shadowkhan. Only the respective Oni can control his Shadowkhan.

Weakness
Oni are repelled by onions which cause them temporary blindness and severe eye irritation. Each Oni Generals are weak to a different Japanese item. When the respective item is mixed with the right ingredients, a powerful chi spell can be made which allows the user to imprison the Oni in masks as well as remove the said masks from the faces of potential wearers.