Rupert ‘Axebanger’ Brookstanton was an individual whose name Hermione Granger encountered in a Hogwarts library book while researching who R.A.B. might be (HBP30).
Rupert 'Axebanger' Brookstanton
Species / Race Wizard
Blood Status Unknown
Other Names Axebanger
Rupert may be an homage to Rupert Grint, who played Ron in the films.