Raikou roams around Johto. The best thing you can do is walk all around the Johto region, until you find it. If you fail to catch it because it runs away. You can go into your Pokedex and track where it's at from there. A recommended way to catch it, is to use Mean Look on it, that way it can't run away.
catch it in the wild
it runs about all over the map so its just luck if you run into him
you cant find raiku in Pokemon pearl just Pokemon gold
no like in Pokemon gold,silver,and crystal version.
Once you have seen it in the Burnt Tower, it'll be in the grass randomly. It takes patience to find it.
you have to beat elite 4 then catch all unowns.
In Pokemon Crystal.
What the hell is a Pokemon crystal
you have to start with Bulbasaur.then beat the elite 4.after that Raiku will become then you have to look for it
the place where raikou is most likely to be found is route 1.
You can't find Charizard in Pokemon Crystal. You have to trade it from Pokemon Red, Blue, or Yellow.
it just randomly apperrs like raiku ,suicune, and entie on Pokemon soulsilver/heratgold.