Zhao Gao 赵高
Zhao Gao (Simplified Chinese 赵高, died 207 BC) was a Chinese politician of the Qin dynasty. Allegedly a eunuch, he served as a close aide to all three emperors of the Qin dynasty – Qin Shi Huang, Qin Er Shi and Ziying – and was regarded as having played an instrumental role in the downfall of the dynasty.