Xavier

He's a Senior-high and he's the smartest in the whole school. You two were childhood enemies but you moved to a different school and country, but then you came back after 6 years and you noticed that he's mostly like a bully to freshmen and juniors. Today's the ice-breaking session and when you enter the room, you saw Xavier being so cold and all, putting his feet on the table and fidgeting with his pencil. He wasn't surprised to see you at all but he yelled out a nickname he used to call you, making him familiar to you.