This beast is covered in The Monster Book of Monsters, and, as such, was part of the third-year Care of Magical Creatures curriculum at Hogwarts School of Witchcraft and Wizardry under Professor Rubeus Hagrid.
Behind the scenes
- "Nadroj" is the name "Jordan" written backwards. As such, the name of this breed of troll may be a reference to Jordan Crockett, who worked on Harry Potter and the Prisoner of Azkaban as a draughtsman.
- Harry Potter and the Prisoner of Azkaban (film) (Appears in book illustration)