Joon Shin, a very manipulative, amoral, and cruel man, is the leader of a gang of prison escapees and the final antagonist in Sweet Home. He is a former drug dealer who was arrested by Wook Pyeon and sentenced to jail. During the Monster Apocalypse, he led a group of prisoners through a jail-break and stole a prison bus. He is clever enough to leverage the fake promise of essential resources to coerce the survivors into cooperation. He uses draconian methods to exert dominance over his gang and the survivors, such as threats of killing people who oppose him. He is, however, careful not to kill someone who may prove useful, such as those able to control their own monster. He is usually cold and calculating, but loses his temper when people disobey his commands. He also appears to hold a grudge against Pyeon as he was visibly enraged when challenged by Wook. Ultimately, Joon is selfish and isn't above abandoning his own gang if things go awry and is willing to turn into a monster in order to live.