Guo Si

Guo Si (died 197), also known as Guo Duo, was a general serving under the warlord Dong Zhuo in the late Eastern Han dynasty. He assisted Dong Zhuo in his many campaigns and served as a subordinate of Dong Zhuo's son-in-law, Niu Fu, after Dong Zhuo relocated the imperial capital to Chang'an. He later became one of the de facto regents of Emperor Xian, wherein they occupied the capital and held the emperor and imperial officials hostage. However, his downfall came when he quarrelled with his co-regent, Li Jue. He and Li Jue were ultimately defeated by Yang Feng and Dong Cheng, who assisted the emperor to flee the capital. Guo Si was eventually betrayed and murdered by one of his subordinates.