Veteran actor O Yeongsu began his career in theatre, appearing in more than two hundred plays before moving on to television and film.
Throughout the game, Gi-hun forms an alliance with Cho Sang-woo, a childhood friend of his, Kang Sae-byeok, Ali Abdul who saved Gi-hun's life during "" and Oh Il-nam.
Gi-hun comes upon Il-nam, thought to have died in the games, alive but lying at his deathbed, and is horrified and disgusted at the latter's reveal that he was the creator of the Squid Game.