Yeonsangun of Joseon

Also known as Yeon San Gun, King Yeonsan, Yeonsan, Li Long, Wuzuojin, Yeonsan-gun

Yeonsangun or Prince Yeonsan, personal name Yi Yung, was the 10th monarch of the Joseon dynasty of Korea. Often considered the worst tyrant in Joseon's history and perhaps all Korean history, he is notorious for launching two bloody purges, seizing hundreds of women from all over the peninsula to serve as palace entertainers, and appropriating Sungkyunkwan as a personal pleasure ground. Yeonsangun's despotic rule provided a stark contrast to the liberal era of his father, and as a much-despised overthrown monarch, he did not receive a temple name.