WELCOME TO THE GAME. I'm Regina. ^_^ Below are my little bundles of ... ... joy. Yes. Joy is the word I'm looking for.
Remy: A con artist who can see anywhere in time and space and can make physic projections (Tarot) who feels he has a religious obligation to rob rich assholes. Currently stalking Emma Frost. Not so sure he'd have anything to do with Pietro, honestly. It would require a lot of coincidences.
Bobby: A teenager who's likely to start the zombie apocalypse with an undiagnosed mental disorder and addiction to death. (See: Threnody.) Prone to psychopathic episodes but otherwise the nicest person ever. Is BFFs with Wanda despite their age differences (they bonded over their shared dysfunctions). Not sure what Pietro would make of that. They will say some utterly heinous things to each other with the same tone as asking whether you want pizza for dinner.
Cecilia: An immortal doctor with regenerative capabilities and a sharp tongue. (aka "Wolverine.) Has been at the school almost since it started. Is at least 130 years old but doesn't know if she's older due to some amnesia. Everyone gets a physical when they show up, so he's at least met Cecilia. Not sure where else to go with that though. Possible immortality if Pietro hangs around her often enough (or at least an extended lifespan) but does he really want to outlive Wanda anyway?
Julian: A hyper confident, loud, and demanding teenager who nevertheless has the heart of hero and is a flying brick + telepathy (Monet St. Croix). Was sent to a troubled teen facility to try and take him, which lasted all of a month. Now in a legal battle with his parents. Don't think he and Pietro would interact much.