Shadow Lugia is not in Soul Silver, but Lugia is. He is in the Whirl Islands.
you need the tidal bell and the silver wing
what is luiga and what is planium?for lugia you cheat get an event migrate or trade or do GTS
you must generate a pokesav of a purfied luiga
Yes you can. Once to progress the story line, and if you knocked it out it will appear in Whirl Islands again after beating the E4.
no only pink
After you have got the silver wing from the director and the tidal bell from the kimono girls head to the whirl islands and there is a cave if you take the right paths and ladders you reach a man who will stop you but he will then let you pass, go down and go into the 2nd room talk to the kimono girls they will do a dance and the that's when Luiga will apearGood luck catching Luiga!, he really is a pain to catch but I'm sure you can do it!
You need to go to Pal Park.
No srry
Right at the bottom of them with Luiga
you cant get Lugia in Pokemon Diamond
Go to cinawood city and use surf u will find I think three islands and they each have a cave search thu each oh yea make sure u have a silver wing and a master ball. One cave will have luiga in it.