>>37150774RGB/Y/FRLG -> 11-12 year old
GSC/HGSS -> They are supposed to be as old as the protagonists of the prequels so 11-12 year old too
RSE/ORAS -> 11-12 year old (the MultiNav says the protagonist is 12yo near to the end of the story)
DPPt -> The Dex shows the heights and weights of the protagonist of HGSS and DPPt and they are about as tall as the one from Johto so these are 11-12 year old too (or even younger since they are a little shorter)
BW -> 14-15 (they were planned as 16yo at first but they ended up being 14 according to the Famitsu magazine)
B2W2 -> They are supposed to be as old as the protagonist of the prequels so 14-15 year old too
XY -> They are called "adults" by some characters and Emma in the postgame treats you as a senpai, and she's 16yo according to Xerosic documents so they are at least 17-18
SM/USUM -> 11-12 year old again
Pika/Vee -> I bet theyare 11-12yo again
