u can catch unknown or maybe a legendar, im not sure cuz i dont have that game but i have the kinda like an expansion but not really SoulSilover and there if u get all of the unknown(the alphabet+the ! ? unknown)i think u can do the arceus event if u have arceus.
the picture is aerodactyl the letters use flash
to get unknown you go to ruins of alph and do the puzzle of a legendary pokemon(i dont know which one) after that you fall in a hole and then search for it somewhere.
A event which you can get palkia, dialga or giritina
The Tanoby ruins contain the Unknown Pokemon once the Tanoby key puzzle is solved. The Unknown Pokemon form the letters of the alphabet.
Tanoby Ruins is the main location for catching Unown in Pokemon LeafGreen. To get the Unown to appear in the ruins you need to complete the Tanoby Key puzzle.
Catch unowns. Go through the door and run around in the tunnels until you find one. Then catch it.
you put the pieces in the right place....
Go into the tanoby chambers to catch the Pokemon unown.
go into the smaller ruins and slove the puzzels on the wall. The floor will open and you will fall into the ruins of alph. You will then find unown in the ruins.
The tanoby chambers are ruins where a certain Pokemon is lurking to find that Pokemon you must first solve the boulder puzzle in tanoby key once you do that you can find that Pokemon in the chambers.
After you solve the puzzle, you go through the door in the back that opens up. There'll be some glyphs and an item. Afterwards, 5 new Unown will be wandring out in the main chambers.
Steven will never appear in the Ruins of Alph.