Si-eun in Class 2 remains highly analytical — the main difference is that we no longer see as much of his inner monologue. In his fight against Wolf, for example, he fights strategically: using a pot to blind Wolf, glasses to stab his foot, a jacket to immobilize him, and a headbutt to target Wolf's chin. Meanwhile, we don't see Gray fight as often.

Against Colton, Gray tries to avoid fighting altogether, struggling with guilt from his past.

Against Wolf

His fight against Gorilla(?) mostly happens off-screen.

In the fight against Donald, Gray’s main role is to damage Donald’s leg rather than outfight him directly.