I cannot overstate how important it was for me to watch a show as a deep-voiced uggo and see Tina, a deep-voiced girl who's supposed to be pretty plain-looking, be treated as a human being who is worthy of love and respect
She has multiple boys who genuinely like her for who she is, her siblings are ride or die for her and her parents love her and accept all of her quirkiness and awkwardness and help guide her through the awful parts of being a teenager
I liked how they used him to show that even the most powerful and loved person in the world is still a human being underneath it all, and there are times when he's not a great person and makes mistakes and bad judgments
And how he loses his powers relatively early on in the series and has to reckon with the fact that he fully expected to be dead at his age and has to figure out "so wtf do I do now"
He could have turned bitter and angry over what happened to him and he and Ed both shoulder more responsibility for it than I feel like they should, but he's still a kind and hopeful person throughout
6. Avatar Aang. I know he can be disliked by a lot of fans, but I liked his journey and how the show acknowledged that a 12 year old boy raised in a peaceful order of monks wouldn't be able to throw away his principles on a whim
Like Al, he had a heavy burden placed on him but still was able to show compassion and forgiveness and tried to find the least violent path to solving problems
7. Groot hits my love for gentle giant types. For a creature of few words he still has such personality, and in some comic incarnations they show that he's very intelligent but has no real way to communicate and his greatest wish is to just be able to talk to someone and be understood.
I just think he's neatI like that he has such a strong sense of justice and puts himself on the line again and again to save the world.