Li Jue

Li Jue was an officer who once served under Dong Zhuo. After Dong Zhuo's assassination, he and his peers killed Wang Yun. Taking Emperor Xiao, he assumed control of the government. Due to a plot by Yang Biao, he ended up fighting his ally Guo Si, which led to his own demise.

Romance of the Three Kingdoms
Li Jue had been loyally serving the usurper Dong Zhuo, but when Dong Zhuo was slain by his son, Lu Bu in conspiracy with Diaochan's father, Wang Yun, Li Jue rose up with Guo Si and other Dong Zhuo loyalists in rebellion. They began a march on the capital, eventually coming to the palace. Emperor Shao, standing high, had asked why the rebels were there, to which they demanded Dong Zhuo's killer. Wang Yun, after talking with the emperor, came down in front of the pavillion, and was killed by Li Jue after demanding his own death.