Cho Seong-il

Cho Seong-il (조성일), known professionally as Seongil, is the leader of 82MAJOR under Great M Entertainment. He debuted on October 11, 2023 and helps define the group's performance identity with sharp movement, vocal stability, and the kind of stage control that keeps 82MAJOR's harder material locked in.

That role has become clearer across ON, BEAT by 82, X-82, SILENCE SYNDROME, and Trophy, where 82MAJOR kept pushing a more aggressive lane instead of settling for a softer rookie reset. Seongil gives those releases structure. He sets the pace, keeps formations clean, and makes the group's performance-first strategy feel disciplined rather than chaotic.

As Great M Entertainment keeps building 82MAJOR as its flagship act, Seongil remains one of the clearest signs of the company's long-game approach: strong team identity, repeatable live impact, and growth built on execution.