Ah, the Oni. The stuff of nightmares and all the tales we were told as children, hoping to keep us away from the dark and dangerous.

Oni are cursed spirits, created by the First Born to feed on the fear and negative emotions of humans. They are immortal and can take over a human host body or armor if they choose. This gives them the ability to interact with the world in a physical form, although they can easily be spotted with their dark skin around the eyes.

In terms of physical abilities, they are similar to humans, with the same strength and speed. But they have the added bonus of being able to cast illusions and sense people's worst fears. This makes them extremely clever and strategic when it comes to getting what they want.

The only way to stop an Oni is with hellfire, so be careful. Otherwise, these cursed spirits may just be lurking in the shadows, waiting for their chance to take over.