Qin Er Shi

Qin Er Shi (229 – 207 BC), given name Huhai, was the second emperor of the Chinese Qin dynasty, reigning from 210 to 207 BC. The son of Qin Shi Huang, he was put on the throne by Li Si and Zhao Gao, circumventing his brother Fusu, who had been the designated heir. Upon Huhai's ascension, both Fusu and the popular general Meng Tian were killed on the orders of Li and Zhao, with Qin Er Shi's role in the assassinations remaining uncertain and controversial. A weak ruler, Qin Er Shi's reign was completely dominated by Zhao Gao, who eventually forced him to commit suicide. By the time of his death, the Qin Empire's power had lessened so much that his successor Ziying ruled as a king, not emperor.

Source: Wikipedia — https://en.wikipedia.org/wiki/Qin_Er_Shi