You should be able too by trading Pokemon.
256 pokemon. But all together 493.
cheats
NO! Pokemon SoulSilver Version is the exact same thing as Pokemon Silver Version. Only all the Kanto, Johto, Hoenn, and Sinnoh region Pokemon are in there.
no only johto and kanto but you can get the 3 hoenn starters
Beat all the Johto gym leaders and the Kimono Girls. (They're in Ecuteark city.)
Prof. Elm will give you a Master Ball as a reward for getting all of the Johto badges.
You can't- unless you trade
you either have to trade with a friend or use an action replay code to catch another trainers Pokemon.
Get all eight badges from the johto region and then beat the Pokemon league to go to kanto
You can catch every Kanto and Johto Pokemon. You can also catch many Sinnoh and Hoenn Pokemon by turning on the radio. There are not all Pokemon available, however.
Defeat all of the Johto and kanto Gym Leader, talk to Prof. Oak, and he will let you go there and challenge red
Chikorita,totodile,cyndaquil,lugia,ho-oh,and that is all I am going to say but I know there is more than a hundred. Go to Youtube.com and type in all Johto Pokemon.