Gouki, also known as Akuma in the English localization of the Street Fighter series, is a powerful and enigmatic martial artist who has mastered the dark art of the Satsui no Hado. As the younger brother of Gouken, Ryu and Ken’s master, Gouki serves as both a rival and a major antagonist in the series. He relentlessly seeks worthy opponents to test his strength, embodying a merciless fighting spirit and an unyielding pursuit of power.