Born in Seoul, South Korea, he moved to Los Angeles at the age of six. He studied psychology at the University of California, Berkeley. He gained recognition for his role as Minho in "The Maze Runner" film series. Additionally, he has appeared in various television shows, including "The Nine Lives of Chloe King" and "Unbreakable Kimmy Schmidt." He is known for his charismatic performances and has also worked in theater, showcasing his versatility as an actor.