Physical: 100

Jeong Young-han plays the character Master in Physical: 100. Master is a skilled and experienced trainer who guides and motivates the participants in their physical challenges. He uses his expertise to push the contestants to their limits and help them reach their full potential.

Yoshihiro Akiyama portrays a character named Self in Physical: 100. Self is a participant in the show, competing against others in various physical tasks and challenges. Akiyama brings his athletic background and determination to the role, showcasing his own physical abilities.

Yun Sung-bin plays the character Self in Physical: 100. Like the other participants, Self pushes himself to the limits and faces various physical tests. Sung-bin, known as a successful skeleton racer in real life, brings his athleticism and competitive spirit to the role.