There is a rumor going around that the Unowns' have something to do with Hoopa. People say that "All the Unowns will make Hoopa" is this true or not? I'm 50 50 here. I mean you only have 6 slots not 28 (all the Unowns') and it does kind of make sense in a way because the Desert Catacombs (on Route 11 and where the Unown are) has steps leading into a wall, at the bottom of the Catacombs with buttons of some sorts. I feel like this is a passage way to Hoopa. Since there is 2 versions of Hoopa, Hoopa Confined and Hoopa Unbound. My guess is that you will need all the Unowns' somehow, to unlock this door along with a puzzle. Or getting him with a update that includes Crescent Island. However, the Unowns' are already used in something, Diancie. Getting O, P, E, and, N unlocks a door in Route 13 that brings you to Diancie, meaning that I think the Unowns' won't be used, who knows! If anyone has any thoughts or proof that this or something else is correct, I would be glad to hear it.