InSec is best known as the namesake for one of the flashiest Lee Sin plays in League of Legends history, a technique that has since proliferated throughout the world. Over the course of his eight year career, inSec has played for teams from South Korea to Europe and competed at one League of Legends World Championship.
InSec began his career in the LCK before moving to China as one of the first South Koreans to join the LPL. He eventually ended up playing alongside fellow all-time great
Although he eventually returned to competition, he's now ending that return because he could be called into service with the South Korean military at any time. Rather than hurt a team with his sudden departure, he has decided to switch to streaming.
Photo courtesy of Riot Games