satsui no hadou ni mezameta ryuu
Satsui no Hadou ni Mezameta Ryuu (殺意の波動に目覚めたリュウ, lit. "Ryuu who has Awakened to the Surge of Killing Intent"), known as Evil Ryu everywhere else, is a playable character in various Street Fighter games beginning with Street Fighter Zero 2. He was originally introduced in a Street Fighter Zero manga series authored by Masahiko Nakahira and later adapted in the Street Fighter canon by Capcom. He is the version of Ryuu should he succumb to Satsui no Hadou, and depicts Ryuu's struggle to resist the urge. Gameplay-wise, Satsui no Ryuu has more powerful attacks than the original, strikes faster and possesses some of the attacks of Gouki (such as the Shun Goku Satsu).
This tag has been aliased to evil_ryuu (learn more).