
Age: 89
female
Masako Nozawa is a Japanese actress and voice actress from Tokyo. Throughout her life, she has been affiliated with Production Baobab, 81 Produce and self-owned Office Nozawa; she is currently affiliated with Aoni Production. Her late husband, Masaaki Tsukada, was also a voice actor. As a voice actress, she is best known for the role of Son Goku in the popular anime franchise Dragon Ball, as well as all of Goku's male family relatives (except Raditz) and the villainous Goku Black. She has also voiced Tetsurō Hoshino (Galaxy Express 999) and Kitarō (GeGeGe no Kitarō, first and second series). In addition, she has also voiced two separate characters named "Hiroshi"; a character in Dokonjō Gaeru, and the characters known in the U.S. as "Pidge" and "Haggar" in Hyakujūō Golion. She also voiced Doraemon in the 1973 anime, replacing male actor Kōsei Tomita, who voiced the character in the first 26 episodes. In the 1979 anime, she was replaced by Nobuyo Ōyama, however Masako voiced Doraemon again in a 1988 special entitled Early English with Doraemon for unknown reasons.

One hundred competitors, all known for their well-developed physical attributes and physique, go head-to-head against each other in various individual and team challenges, or 'quests' of strength, balance, agility, endurance, strong willpower, and strategy. The competition is formatted like a tournament. Following each quest, participants are eliminated until only one remains to win the prize money of ₩300 million. Every participant has a plaster cast of their torso on set; if they are eliminated after a quest, they have to destroy the cast with a sledgehammer. The show has often been compared to Squid Game, a 2021 South Korean survival drama television series, for their language and competition-elimination format similarities.
