Zhao Gao (Chinese: 趙高; died 207 BC) was the chief eunuch during the Qin Dynasty of China. Considered as one of the most corrupt, villainous, violent and powerful eunuchs in Chinese history, Gao played an instrumental role in the downfall of the Qin Dynasty.
Read more about Zhao Gao: Early Life, Coup Following Qin Shi Huang's Death, Calling A Deer A Horse, Alternative Viewpoints