What happens when you get all 28 Unown? Get ready for it! You get...the satisfaction of finding them all! Seriously, the only thing you get from it is that you can go to the house closest to the ruins, and the little boy inside will give you seals that match the letter of the Unown that is in the first position of your party. Enjoy.
I dont know what happen in diamond, but in platinum you can catch ! and ? unowns.
nothing happens
nothing happens unfortunetly
nothing............. you just caught all the Pokemon congratulations
you get a diploma
Unknown are in Pokemon games for events like in Pokemon diamond, Peral and Platinum when you have to catch all the unknown and show them to the tunnel maniac under hearthome city i think and then you get a prize!
not much all that happens is cressilia becomes a running Pokemon
to do this you have to catch all of the unknown and talk to the wall and he will appear randomly on the game. Hope i helped.
all your hard work is gone and all you have left is a lv5 starter?
buy the Pokemon platinum book
There is no cheat for catching all the Pokemon on Pokemon platinum. it's all down to hard work and persistence.
no