Use A Master Ball Or Ultra Ball To Catch.
But I Think It is Hard To Find Master Ball...:/
over 9000
yes you can also catch them in soul silver.
You can't in Soul Silver, only in Heart Gold.
You can catch Lugia, and evolve Growlithe into Aracanine, which is not considered legendary, but literally has the title of Legendary Pokemon. Hope this helps!
it is a item that you obtain in pokemon soul silver that you use to catch lugia the legendary bird in the whirl islands.
You can catch Mewtwo, Suicune, Entei, Raiku, Ho-Oh, and Lugia.
Its Either Raikou Or Entei. Suicune Can Be Catch On Kanto.
It was originally to catch the event legendary pokémon, Celebi.
you only can trade it from heart gold. you can catch groudon on soul silver
Use Action Replay
The only one i really know is ditto.
well what i did, was i got masterballs from another game and used it on the LEGENDARY pokemon. but you could fight them i guess...