Celebrity guests are split into two teams to compete in various contests. One guest, known only to himself, is designated the "X-Man", and does his best to cause his team to lose the contests. At the end, all guests try to determine the X-Man's identity.
Top Billed Cast
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Lee Hyuk-jae
MC/Team Leader (181 episodes)
Yoo Jae-suk
Main MC (181 episodes)
Kang Ho-dong
MC/Team Leader (181 episodes)
Gong Hyung-jin
MC/Team Leader (158 episodes)Himself (6 episodes)
Park Kyeong-rim
MC/Team Leader (158 episodes)Herself (2 episodes)
Kim Je-dong
MC/Team Leader (158 episodes)
Haha
Himself (89 episodes)
Park Myung-soo
Himself (76 episodes)
Chae Yeon
Herself (70 episodes)
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