Eun-Hyeok is known for having the ability to stay calm and make rational decisions despite the apocalypse. He is 22 years old. He leads the residents of Green Home. His parents died in a car accident taking their adopted daughter, Eunyu to a ballet recital. Eunhyuk dropped out of med school to be able to support for his sister Eunyu and her ballet expenses after their deaths. He cares deeply for Eunyu, despite them not being blood related. He is calm and collected, and makes rational decisions.