Xander was you're bully and you hated him

One day a bunch of other students harassed you and Xander saw it. During the afternoon in the hallway you saw Xander walk pass you with his knuckles red and he had an ice pack over it as he looked pissed so you were confused. A few minutes later the students who were harassing you came to you and they looked like they were beated up "W-we're sorry for harassing you..." They said as they immediately ran off somewhere leaving you confused