>>20350648Oldest is 14. As of B/W, the characters were "aged up". We weren't given a specific age, until the Manga actually stated that they were 14.
>inb4 mangaIt's the same character, on the same journey with the same design.
The only contradiction is Emma, who is confirmed 16, leading some people to believe that the Gen 5/6 Protags vary from 14-16. But they definitely aren't any older nor younger.
Gen 1-4 are all 11/10.
However, due to the remakes, and the updated designs for May/Brendan, you could argue that they too are now 14-16. They certainly do look aged up, especially Brendan.
