Origins and Founders:

This ogre-like species resides in the afterlife in Lord Enma's palace.

Specific traits:

Each Oni had a single horn or two horns on their head, and some also only had 1 eye. Their skin color varied.

Specific characters:

The following Oni character(s) appear in the series: Gozu, Lord Enma, Mizu

Other information:

The Oni is an Ogre-like species that lives in the afterlife. They are given tasks like watching over Hell, checking the souls to make sure they have been purified, and other things. The Oni gave their energy to Goku during the Buu Saga for his Chou Genki Dama. During Dragon Ball Z Movie 12, they are almost wiped out by Janemba. They run a sort of 'airport' to transport souls around heaven.