I rewatched Avatar a few months ago, and found a few similar characteristics. I don't have a character for everyone, but I did my best.
(It's about the series, not the movie)
Hope you'll enjoy 😊😊😄
Cal: Zuko. Both are firebenders in exile. Their mothers are away, problematic father, and a cunning sibling who's under an evil parent guidence.
They had to go through a long journey until they learned to make the right decision.
Evangeline: Mai. They grew up with parents only second in power to the royal family. They were taught to always obey their parents orders.
They kept to the "bad" side until their lover was on the line. Mai betrayed Azula when Zuko needed to escape.
Maven: Azula. The younger sibling, feeling unloved by their father/mother. Left with one toxic parent.
Both sneaked their way to the front of the line to the Fire (Nation) throne. Gone mad and were eventually defeated.
Sonya Iral: Ty Lee. Based solely on their abilities. Both are very sleek, agile and fast.
Farley: Suki. They are badass, powerful warriors. Neither has an ability, but it isn't needed when you're such a powerful woman.
Kilorn: Sokka (to the end of the series).
They are both funny, street-smart, and nice. They are best friends with the main character.
Both are insecure about not having any ability/bending, and learn to appreciate themselves despite it.
Julian: Iroh. They are the calm, knowing uncle. Supports their nephew through their hard times and tries to set them on the right path.
Mare: the cabbage guy. Other people always get in her way and make her start again, but she eventually succeeded and triumphed.
If you managed to find any more, you're welcome to tell me! Requests and prompts are always open, and I hope you're all doing well!🙃