Seneca Lestrange can be one of his victims, she's an upper class pureblood and although she's not actively bullying people or anything, he'd likely consider her snotty.

Then I have her cousin, Meta Lestrange who began as a snotty PB kid but she has become blood traitor-ish since. She also has anger issues and they could be friendly?

Lastly, my third student is Ruby Urquart who has received a lot of crap for having a werewolf sister, so they could be friendly?