The host of the Round Table Meeting, a young man in his twenties with silver hair flowing over his shoulders. He wears a black butterfly-shaped mask covering half his face and a black uniform. He also goes by Mr. Cheng and Mr. Shen, though those names vanish when written down. He exudes a sense of unnatural illogic and oppression. He established the rules for the Round Table Meeting and oversees the question-and-answer sessions where participants face deadly consequences for wrong answers or rule violations.