Bellamy and Octavia would be in the same house at Hogwarts and no-one can convince me otherwise.
In all likelihood, it’d be Gryffindor.
Like, imagine how proud he’d be of his baby sister.
They spend all the holidays at school because they’re each others only family. Whenever Bellamy goes to Hogsmeade, he brings back enough sweets and stuff to keep Octavia happy until the next time he’s able to go.
He finishes school first, obviously, and does so with enough OWLS to be able to join the Hit Wizards as a capable recruit.
With his help and belief in her, Octavia’s able to earn the 5 NEWTS needed to be able to join the Auror program, which is where she meets Indra and comes into her own.
Neither of them are meant to be safe jobs, Bellamy OR Octavia.
They thrive in danger, but know that as long as they still breathe, they’ll always have a safe home with each other.