And it's not really that they "can't show him being a capable battler because it would prevent his evolution" and more like "Hey, lets keep him at a certain kinda babyish stage to contrast things once he evolves". Think of it this way ...
Piplup doesn't feel young to me.
Snivy doesn't feel young to me. Non-
Charmander OS Starters don't feel young to me.
Tepig and
Torchic and pretty much every other main cast 3 stage Pokemon that fully evolves felt youthful to me, as if they could gain something from evolving and becoming more mature.
And no, I don't think it's being held back by some title as "BW mascot". The animators are pretty open about why they do and do not do things. They're reason for having Puplup not evolve was because it's other stages were ugly and did not fit for Dawn's contest presentation. That's why it had a whole episode focused on showing it's nonsensical reason for not wanting to evolve. What did they say about Axew? Pretty much "Don't expect it to happen soon, we like to tuck it away in
Iris's hair to cut down on animation and it would be hard to explain why it's suddenly in a ball".
Bookmarks