Quoted By:
let's say that the Pokedex voice is Goh from Journeys and not a reference, then we can assume that he becomes some professor or something. that means that PM23 is part of the normal universe.
That means that, that there is a very high likely hood that Riko could actually be Ash and Dawn's daughter(it would not be anyone else's. Unironically matpats video has a good explanation on why it's her) since so far we don't know anything about her or her family, just that she does have both parents around.
She said that both her parents are really busy, too busy to do much if she went back to visit, which means they are both working people.
but both still make time to discuss what their daughter does( like what school she goes to) so they are not absent from her life.
She said that both parents went to the same school. as we know now Ash has only been to the alola school and none other, if we are to believe this theory then this happens completely off-screen.
something else that adds to this, is that Tomioka is the head writer again, and we all know who was his favorite.
that would mean that her grandmother would be either Dawn or Ashs mom.
The Goh pokedex thing really caught me off guard.
of course, as we get more info this will need to be theory will need to be refined.
But that's just a theory.