Yeom Jang

Yeom Jang (염장, 閻長, ?-?), also mentioned as Yeom Moon, was a Silla general who is best known for assassinating Jang Bogo. Yeom had actually been a subordinate of Jang Bogo, but their relationship apparently deteriorated as he was once punished by Jang Bogo for having been personally engaged in slave trade.
Eventually, Yeom Jang turned to Kim Yang (김양, 金陽, 808-857), actual power of the Korean court, under whose direction, he went on a quest to kill Jang Bogo.