Seong Gi-Hun

Seong Gi-Hun, or just Gi-Hun, known as Player 456 in Squid Game, looks to be in his 50s when he re-enters the Squid Games to stop them and prevent 456 people from being killed again, he participated in the games before as Player 456, just to be heartbroken when he returned to his mother being dead, his friends include Kim Jun-Hee (Player 222), Hwang In-ho (Frontman/Disguise as Player 001 in S2), Oh Il-Nam (Player 001 in S1), etc, he is smart, kind, protective, and thankful to be alive, he didn't use the prize money when he first joined the games, instead, he gave half to help his friend's family in Season 1, and he also has a daughter named Seong Ga-Yeong.