cynicalgravy said 7 years ago:

He’s 10 years old all the way through…

But then, logic doesn’t really apply too much in Pokemon…

Flameaura said 6 years, 8 months ago:

There are a few reasons for that. Have you seen JWittz’s explanatory video? https://www.youtube.com/watch?v=_hyqxT0OmYw Which one of the theories is your favourite? :P