Mr. Karate, the undefeated martial artist, was revealed as Ryo's missing father, Takuma Sakazaki. 10 years ago, he knew that Ronnet's death was intentionally planned by someone. Fearing that the rest of his family would be targeted if he stayed, he disappeared. However, 10 years after Ronnet's accident, he learned that an organization had targeted his daughter Yuri. Learning that Mr. Big was behind this, Takuma was forced to work with him. However, Mr. Big's ambitions were foiled by Ryo, Robert, and King's revolution, the latter being one of his former subordinates. Yuri and Takuma safely returned home.
