nothing happens unfortunetly
Once you get every unknown, another section of your pokedex will be added. This contains other Pokemon that can not be caught in fire red or leaf green.
at the bottom of seven island there will be little islands u go there.And there will be little caves go in them and there will be uknowns.But nothing happens if u get all of them.
they spell the alphabet and maybe you get a rare Pokemon
All 28 Unown are available in Pokémon FireRed within the Tanoby Ruins on 7 Island.
you get a diploma
you can't catch more pokemon. you have to get rid of some pokemon.
Congrats for first second go to prof oak just watch what happens it will scare you.
you can get the Diploma from the guy in the Mansion in Celadon city.
Nothing special. They just spell out the alphabet, maybe you get a rare pokemon (;
It is said that when you get all unknown you will get something i think a pokemon but i am not sure
Nothing prof oak thanks you and that's it.
every where