He Jin
In 189, Emperor Ling died, leaving his young son in the care of Empress Dowager He and General-in-Chief He Jin. He Jin then summoned Dong Zhuo to lead troops into the capital to assist in a plot to eliminate the powerful eunuch faction. Before Dong Zhuo arrived, however, He Jin was assassinated by the eunuchs and Luoyang fell into chaos following a clash between supporters of both sides. Dong Zhuo then seized military control of the capital and deposed the young emperor for the puppet Emperor Xian. However, his tyrannical ways incurred the wrath of many and in the following year, warlords from eastern China formed a coalition against him.