Guest Stars Kwon Yoo-joon as Masked Front Man Stand-in Jeon Young Soo voices Game Guide Kim Byung Chul as Instructions Guard Park Hye Jin as Sang Woo's Mother Im Ki Hong as Jung Min-tae Lee Seo Hwan as Park Jung Bae Jo Ah In as Sung Ga Young Kim Young Ok as Gi-hun's Mother Yang Mal Bok as Player 453 Yoon Seung Hoon as Park Ju-un Choi Jae Seop as Park Man Cheol Park Si Wan as Kang Chul Yoon Don Sun as No Sang-hun Kang Mal Geum as Ga-yeong's Mother Hyun Jin as Player 209 Min Tae Yul as Player 271 Won Choon Gyu as Player 066 Seon In Ho as Police Detective Kim Min Shik as Kim Jin Woo Jang Jae Kwon as Ga-yeong's Stepfather Lee Choong Goo as Gang Member Lee Jae Sung as Gangster So Yun Ho as Detective Kim Sung Gon as Detective Kim Kye Sun as Dormitory Owner Pyo Dong Joon as Ga-yeong's Brother Song Hyung Soo as Doctor Park Jung Eon as Player 073 Joon Hyun Sook as Fish Shop Customer Kim Seo Ha as Factory Owner Kim Young Sun as Gi-hun's Friend's Wife Lee Dong Yong as Kim Sang Hyuk Yang Hyung Taek as Drunk Go Chang Hee as Hassan Go Chang Hee as Filipino Gangster Anwesha Purkayastha as Ali's Wife
