Disclaimer: I Do Not Own Harry Potter.
Character 1: Hermione.
The children at school would tell her that she was nothing. They were jealous because she was smarter than them, but they were too stupid to realise that's why they didn't like her.
When she discovered she was a Witch she wanted nothing more than to tell them all how wrong they were about her. She was special, they were boring Muggles.
She couldn't anyone Professor McGonagall was very clear on that, but whenever she saw any of them in the street Hermione would smile.
None of them understood what the smile was about, but she did.