In the'Harry Potter' novels by J.K. Rowling, mountain trolls are large, dim, powerful creatures with grey skin, a foul smell and an aggressive attitude towards humans.
In the'Harry Potter' novels by J.K. Rowling, mountain trolls appear in the first novel and are frequently referred to in the other books. They are large, dim, powerful creatures with grey skin, a foul smell and an aggressive attitude towards humans.