Akuma

Akuma, known in Japan as Gouki (豪ゴウ鬼キ Gōki?, "Fortitude", "Great Demon", "Great Devil", or "Great Ogre"), is a video game character and major antagonist of the Street Fighter series, first appearing in Super Street Fighter II Turbo as a hidden final boss. He is an emotionless and powerful warrior fixated on mastering the Satsui no Hado, and the younger brother of Gouken.