Lothraxi
She was a witch, as Harry knew, with prodigious skill and no conscience.

Harry felt as though he turned in slow motion; he saw McGonagall, Kingsley, and Slughorn blasted backward, flailing and writhing through the air, as Voldemort’s fury at the fall of his last, best lieutenant exploded with the force of a bomb.

А ещё Беллатрикс уложила всех своих противников в Министерстве и единственная из ПС отклонила заклятие Дамблдора. Всех её коллег он пленил.