Coming from Seoul, South Korea, Joon served in the Republic of Korea Army where he worked at the Joint Security Area along the Demilitarized Zone. He served as the student body president for the Columbia College Student Council. Tireless advocate of student issues, he talked at a press conference organized by the New York State Attorney General as a student leader to speak against the Trump Administration's rule that deports international students. Pre-COVID, you could have seen him acting in Lerner Black Box with Latenite and getting kbbq in K-town.