10 Best Harry Potter Characters Who Only Appeared In One Movie

It's safe to say that this little guy is a perfect example of the phrase "size isn't everything".

This extends not only to his physical stature but also the amount of time he spent in the HP franchise. When recalling this character plenty of viewers will get a nostalgic vibe, remembering how fun and energetic he was, despite lacking a body.

Prisoner of Azkaban was the start of a new direction for the Potter flicks. While it still had all the charm and humour of the previous films, the tone was much darker, and this was clear from the get-go. When this shrunken head appeared alongside the Knight Bus, he was a perfect example of the dark yet fun direction that the series would be going in.

No one can forget his memorable dialogue, including classic lines such as "It's going to be a bumpy ride", "Ernie! Little old lady at 12 o'clock!" and more.

He was gone almost as quickly as he was introduced, and even the Knight Bus itself never came back into play. Still, wherever the triple-decker vehicle went, it's easy to assume that its operators were having a whale of a time.