The reason Ash Ketchum isn't aging

We shall watch it for another 30 years.

I need that power

SHUT UP MOM

Timmy Turner has been 10 years old forever too

Ash gave his soul to Ho-Oh so he could be a Pokemon trainer forever. I'm kidding I read some where he wished to be happy and being happy at that moment was to be a Pokemon trainer and he was 10 so yea that's all I got.

3rd ash was the best