Avada Kedavra
The Harry Potter franchise has become a worldwide phenomenon, with millions of fans from around the world. It would be difficult to avoid knowing who they are these days, given the solid fan base and fantastic films that have emerged since the publication of the novels in the 1990s.
There appear to be five pumpkins carved in order to recreate the scene from Harry Potter and the Deathly Hallows Part 2, in which Harry defeats Voldemort. The fact that this is recognizable just from looking at some carved pumpkins shows how remarkable a job was done.