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 Yoon Seung Hoon as Park Ju-un Yang Mal Bok as Player 453 Yoon Don Sun as No Sang-hun Park Si Wan as Kang Chul Choi Jae Seop as Park Man Cheol Kang Mal Geum as Ga-yeong's Mother Won Choon Gyu as Player 066 Min Tae Yul as Player 271 Hyun Jin as Player 209 Seon In Ho as Police Detective Lee Choong Goo as Gang Member Jang Jae Kwon as Ga-yeong's Stepfather Yang Hyung Taek as Drunk Lee Jae Sung as Gangster Go Chang Hee as Hassan Go Chang Hee as Filipino Gangster Anwesha Purkayastha as Ali's Wife Song Hyung Soo as Doctor Pyo Dong Joon as Ga-yeong's Brother So Yun Ho as Detective Kim Sung Gon as Detective Kim Kye Sun as Dormitory Owner Kim Min Shik as Kim Jin Woo 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
