https://e621.net/posts/1480307
is obviously an aged up, adult version of a formerly child character, being the same size as the other adults and with longer hair
https://e621.net/posts/2340833
has a guy with a cigarette in his mouth and a beer, which aren't exactly common for people around 13 years old (as the tag describes itself)
https://e621.net/posts/1166113
this, which just features adult males of a smaller pokemon