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Bob (ボブ ,Bobu?) is a fighter who hails from America as a martial arts legend. However, due to being unable to defeat larger opponents, Bob disappears from the fighting world and remains in hiding for a few years, with many wondering about his whereabouts.

With The King of Iron Fist Tournament 6 drawing near, Bob finally returns, and stuns everyone with his new figure, that of a dangerously obese man. Though Bob claims to have engineered his body to increase his weight and strength while maintaining his speed, few believe him, and most of his fans lose their faith and respect for him.

In order to test his new power and regain his popularity, Bob enters The King of Iron Fist Tournament 6.