Oni is Akuma after he has become one with the Satsui No Hado. His hatred for Gouken has reached a crazed level. Unlike Akuma and Shin Akuma, Oni has no morals whatsoever in this form, and will kill anyone or anything that gets in his way. Oni also hates humanity, and kills anyone he meets in battle, as his win animation in Street Fighter 4 series shows: he grabs the defeated opponent by the head and deals the final blow off screen. His name, meaning either "Mad Demon" or "Mad Ogre", also hints at his evil nature.
In M.U.G.E.N, Oni has been made once by Mr.Ansatsuken.
This Oni Character is a Mode of Mr.Ansatsuken's Akuma, like Phantom.of.the.Server's Ryu's Evil Ryu Mode. He plays like a mix of MVC3 +CVS2. This Oni has 4 Super Moves, including the infamous Shun Goku Satsu. he is very strong, being able to defeat you very quickly if you're not very skilled. he also has 1 OHKO (one hit K.O) hyper, which is the Tenchi Sokaigen.
Hovering the mouse cursor over the Command Input icons will display text that refers to the inputs set in M.U.G.E.N's Key Config.
Icons encased in square brackets [ ] require the respective button(s) to be held down. Hovering the mouse cursor over the icon displays the hold duration if applicable.