How do you catch all the unknowns in ruins of alph Pokemon soulsilver?

You can't catch all the Unknowns in Pokemon SoulSilver. There's no way to catch them in that game.

Here's why:

* They are not programmed into the game. Unknowns were introduced in Pokemon Gold and Silver and are not available in SoulSilver.

* They are not obtainable through any means. There is no hidden event, cheat code, or glitch that allows you to encounter or catch Unknowns in SoulSilver.

If you're looking to catch Unknowns, you'll need to play Pokemon Gold or Silver.

Let me know if you have any other Pokemon questions!