Miss Trunchbull (Matilda, by Roald Dahl)Read about the other entries on the list.
Straight up, this lady is trying to kill kids. She picked up a girl by her braids, whipped her around in the air a few times, and then launched her into a nearby field. Launched. Her. Into. A. Nearby. Field. How is local law enforcement not involved here?! How is The Chokey even a thing?! Why not just waterboard the children instead?! Oh wait, she kind of did that, only instead of water, it was chocolate cake. Trunchbull is bringing everyone a whole world of pain and the only thing that can stop her is a haunting.
Matilda appears among Jeremy Strong's ten funniest fictional families, James Dawson's top ten books to get you through high school, and Christopher Timothy's six best books.
--Marshal Zeringue