Top Ten Harry Potter Characters that Changed the Most Visually Over the Years

The Top Ten
1 Tom Riddle
2 Lavender Brown
3 Tom the Barman

In the first movie he looked like a normal guy in his 60s or so. Not bald but not with much hair, a bit overweight, but overall, average.
Then, in the third movie, he appeared again and looked like what German YouTube personality Coldmirror described as "love child of Uncle Fester and Nosferatu". He has a ridiculously huge hunchback, a creepy grin, an oddly shaped bald head and also seems to be mentally handicapped judging by him hardly saying anything and laughing loudly at terrible puns. Apart from that, he also looks younger.
What happened in those two years?
If it wasn't for coldmirror's Harry Potter analysis I wouldn't even have known those two were supposed to be same person.

4 Filius Flitwick
5 Neville Longbottom

Now he is flat

6 Ron Weasley Ronald Bilius "Ron" Weasley is a fictional character in J. K. Rowling's Harry Potter series. His first appearance was in the first book of the series, Harry Potter and the Philosopher's Stone as the best friend of Harry Potter and Hermione Granger.
7 Albus Dumbledore Professor Albus Percival Wulfric Brian Dumbledore is a fictional character in J. K. Rowling's Harry Potter series.

If you were referring to the films, the actor changed from Richard Harris to Michael Gambon. So yeah he changed.

8 Ginny Weasley Ginny Weasley is a prominent character in the "Harry Potter" series by J.K. Rowling. She is the youngest child and only daughter of the Weasley family. Initially introduced as a shy girl with a crush on Harry Potter, Ginny develops into a strong, independent young woman. Skilled in magic and Quidditch, she plays a pivotal role in the fight against Lord Voldemort and his Death Eaters.
9 Harry Potter Harry James Potter is the title character of J. K. Rowling's Harry Potter series. The majority of the books' plot covers seven years in the life of the orphan Potter, who, on his eleventh birthday, learns he is a wizard.
10 Draco Malfoy Draco Lucius Malfoy is a character in J. K. Rowling's Harry Potter series. He is a student in Harry Potter's year belonging in the Slytherin house.
The Contenders
11 Hermione Granger
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