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What Pokemon Trainers have normal designs?
>No unnatural hair colors
>No impossible hairstyles - stylization is okay, such as Hilda having a huge ponytail
>No weirdly-designed clothing. Regular outfits only. Nothing like ambiguous sock-boots or random holes in clothing.
I believe normal designs are the best ones when it comes to Pokemon. This is a sample, the ones I could think of off the top of my head. What more are there?