Akuma (Street Fighter) -
he is Gouken's younger brother and Ryu's adoptive uncle. Akuma (literally demon) is a cold and extremely powerful warrior whose sole purpose of existance is to hone his fighting skills by battling and destroying strong foes. He rarely displays any sign of emotions (aside from occasional bursts of anger) and almost never smiles. He takes his trainings very seriously (and deals brutally with those who dare interrupt him, as seen in his SF3: the Third Strike ending) and likes to occasionally test himself against worthy rivals (Gen, Oro...). In combat, Akuma almost never resorts to his true strength since he is yet to find an opponent who is to withstand the full extent of his powers.Arthas Menethil (Warcraft) -
Crown Prince of Lordaeron and Knight of the Silver Hand, was the son of King Terenas Menethil II and heir to the throne. He was trained as a paladin by Uther the Lightbringer, and had a romantic relationship with the kind sorceress Jaina Proudmoore. Despite his promising beginnings, Arthas became one of the most powerful and evil beings Azeroth would ever know. Taking up the cursed runeblade Frostmourne, he became a death knight, led the Scourge in destroying Lordaeron, and merged with the Lich King. Ruling as the dominant personality of the Lich King for years afterwards, Arthas was defeated in combat by adventurers of the Alliance and the Horde. Cradled by the spirit of his father, King Terenas, Arthas Menethil died, leaving the mantle of the Lich King to be taken by a noble soul who would contain the power of the Scourge. Metal Sonic (Sonic the Hedgehog) -
is the evil robotic counterpart of Sonic the Hedgehog, created by Dr. Ivo "Eggman" Robotnik. As well as resembling Sonic, he can also perform many of Sonic's moves, including his homing attack. Metal Sonic is always on the dark side throughout the series, with Sonic Rivals 2 being the only game where he takes a protagonistic role as a playable character. He's noteworthy for being the second most recurring villain in the series, only below Dr. Eggman himself.Ripper Roo (Crash Bandicoot) -
is an insane mutated kangaroo, though his head and face could closely resemble a dog. He is often viewed upon as Dr. Cortex's first and failed experiment with the Evolvo Ray. He frequently uses explosive crates when battling Crash. This can be seen in Crash Bandicoot 2 where he lays TNTs and Nitro Crates with his tail, in Crash Team Racing where he drops TNTs, and in his appearance in Crash Bash where he will randomly lay TNT crates on random tiles. He also has razor sharp toe nailsWaluigi (Mario) -
The details of Waluigi's past are unclear since he has no confirmed background, although he has evidently been antagonizing the Mario Bros., especially Luigi, for quite some time before his debut as seen in the opening of Mario Tennis, where he and Luigi confront each other.--
Random Things 12 http://www.misterpoll.com/polls/236287