A balding man whose name is literally 'Dr. Mok' rather than being an actual PhD holder from a university; it is said he never even stepped foot in an elementary school. Despite this, he is a genius who developed the world's first nuclear fusion generator at a young age, along with many other inventions.

An excellent dancer who started as an assistant named 'Gwang-chil.' Uniquely, every time he dies and is cloned, the number at the end of his name increases by one. After Gwang-chil came Gwang-pal, then Gwang-gu, and so on, leading to his current bizarre name, Gwang-isip-il (Gwang-21). As a side note, whenever he weeps sorrowfully, he sticks his right index finger into his right nostril and covers his left eye with only his left index and middle fingers extended.

A virus (175nm). Along with Mpox, he tried to attach himself to a rice ball dropped by the assistant. However, because Mpox violated the 3-second rule and exploded, Corona failed to attach by a hair's breadth.

A virus (175nm). He violates the 3-second rule mentioned by Corona and explodes while trying to attach to the rice ball.