Guest Stars Kwon Yoo-joon as Masked Front Man Stand-in Jeon Young Soo voices Game Guide Kim Byung Chul as Instructions Guard Yoon Young Kyun as Player 040 Kim Shi Hyun as Player 244 Son Won Kyung as Player 360 Kwak Ja Hyung as Player 278 Kim Dong Won as Player 303 Christian Lagahit as Player 276 Park Jong Beom as Guard 28 Stand-in Jang Hyun Jin as Player 083 Kim Dong Hyun as Player 196 Park Jong Beom as Player 357 Kim Yoon as Hwang Jun-ho Stand-in Kim Yoon as Player 122 Kim Ha Young as Player 032 Kim Yoon Tae as Player 069 Yoon Young Gul as Surgery Room Guard Yoon Joo Man as Surgery Room Guard Woo Young Taek as Player 194 Min Tae Yul as Player 271 Heo Dong Won voices Guard 28 Lee Ji Ha as Player 069's Wife Kim Hee Seo as Player 198 Kim Won Jung as Player 245
