Jun-ho is the younger brother of In-ho. Both brothers became police officers until In-ho participated in, and won, the 28th Squid Game. By 2020, In-ho had gone missing, and Jun-ho began his search to find his brother, by taking the identity of one of the workers, and later as a manager and waiter, to find out what happened to his missing brother, who he believed participated in the Squid Games. He was proven right after seeing that his brother won the game in 2015, and became the Front Man