Harry Potter and the Deathly Hallows
Alecto and Amycus Carrow
Affiliation: Death Eaters
Professors: Muggle Studies (Alecto); Defense Against the Dark Arts (Amycus)
These two Death Eaters have been installed as faculty members at Hogwarts under Snape's new regime. This brother-sister team-teaches Defense Against the Dark Arts and Muggle Studies, but they're really just fronts for them to teach the Dark Arts, and to spread Voldemort's doctrine of terror and prejudice through young minds. They attempt to catch Harry when he and Luna are in Ravenclaw Tower, but actually get quickly disabled and tied up by Harry and Professor McGonagall.