Think this would be worth an article? Japan loves puns and one of the more common types of puns are number puns, because there are so many different ways numbers can be read.
So, for example, the first three gym leaders:
Milo - 831 = ya-sa-i (野菜) = "vegetable"
Nessa - 049 = o-yo-gu (泳ぐ) = "to swim"
Kabu - 187 = hi-ba-na (火花) = "spark"
There's a pun for every person with a number that pertains to their character in a way, and it might be neat to have a brief article showing them all? I can write it, if people think it's worth doing. :)