The adventuring party thing might depend on how you view cliques and friend groups. Or if you join the D&D club.
Anyway, hi! I'm also a Hargreeves, but not the one you're staying with. Luther and Sloane, right? One is my brother, the other is my sister-in-law/physics teacher who was also a Hargreeves before she married Luther, but they weren't related. I'm Ben. Human, 16, not magical, but I have powers. Welcome! 🙂