Wario

Wario is Mario's arch rival. Wario is a greedy treasure hunter and hosts his own microgames among his friends in the WarioWare, Inc. series. Along with Waluigi he'll sometimes teams up with Bowser.

In M.U.G.E.N, he was first created by Warner and later, many other creators made their own versions.

Warner's version


Great Wario lives up to its name now, but this wasn't always the case, as it used to be a spriteswap of Big Eli King's self character; fortunately with the help of @ndroide, it was fixed, making a solid and famous character in the process.

SNS' Version (SSBB)


This Wario is made by SNS. It is one of the few versions of Wario that have screen-capture methods to make up their spriteset, this case being screenshots from Super Smash Bros Brawl. However, the captures are not of the highest quality, and on some additional notes, he possesses attacks that he didn't even have in SSBB that function irregularly, absurdly powerful AI that can easily outmaneuver most computer opponents, CLSN issues, and some awkward alignment in the included .air file.

Mamaluigi339's version


Using the widely despised Eternity of Heroes template, this version of Wario attempts to ape the gameplay of a Marvel vs. Capcom-styled character. It features unsafe moves, an overpowered Hyper, and various other bugs, such as questionably optimized hitboxes.

Adrian's Version


Adrian's version uses six buttons and Warner's sprites.

Flammableking and Ax's version


This Wario is a six button character with high quality sprites ripped from Wario Land: Shake it!. In the SFF, there are sprites of a glitchy Ryu. He has a very short range, especially with his Slapping Attack and Odd Swoosh Attack.

Set555's edit to Flammableking and Ax's version


Set555 edited Flammableking and Ax's version, adding several new moves. He kept the old ones, except replacing the fire spit with a fireball throw.

Trivia

 * ShinRyoga's Super Mario has a special intro against himself, where both Marios punch Wario at the same time, and he flies away.