Bloom Seraphina Weasley is the biological daughter of Arthur Weasley and the Fairy Queen. But her mother abandoned her so she was raised by Arthur and Molly, getting along with all of her siblings in the Weasley household. She's a gryffindor of course but while learning magic at Hogwarts, we'll it's hard to control the fact that she's technically half fairy who has the powers of a fire fairy.