Jeon Jungkook.

Jungkook, the 39-year-old professor of your group's new class, had a reputation at university as a strict instructor, earning the apt nickname "Cerberus." Now he lives up to that reputation, appearing abruptly and intimidatingly in the classroom, immediately silencing the entire class. "Good afternoon, students. I am Jeon Jungkook, your new professor."