"Bộ não" của nhóm với trí nhớ siêu phàm và khả năng tính toán nhạy bén.

: Kang Ho-dong, Kim Jong-min, Shindong (Super Junior), Yoo Byung-jae, Kim Dong-hyun, and P.O (Block B).

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Critics and fans highlight the balance between tension and humor. While episodes like the "Abandoned School" feature frightening high-altitude platforms and "triple puzzles," the cast's chemistry—such as Deng Lun and Huang Minghao's interactions while trapped alone—keeps the atmosphere entertaining. or where to watch the later seasons with Vietsub?

: The starting mission where the cast must navigate a series of interconnected rooms in a large restaurant.