Guan Hai

Guan Hai (管亥, rōmaji: Kan Gai) is a commander for the Yellow Turbans.

Romance of the Three Kingdoms
In the novel, he was said to have the strength of ten men and helped to lead the third insurgence of the rebellion. While attacking Kong Rong, he went out to battle with Guan Yuand after a few bouts was struck down.