Some people say bad about mature Ash. They liked him when he was a funny child. But Ash can't be a baby forever. He started his travel when he was 10 years old kid, now he is older (probably 14 or 15) so he is more mature. I think, every character should be like that. He was funnier as a newbie, now he is advanced trainer so...hmm..
Misty was a kid too (maybe she was 10 or 11) and she was crazy XD but now she is older. I don't like her calm personality, I liked her as crazy and horrible girl
Now she is dull.
Tracey is normal. Brock should finally grow up too.