i got my azurril in my pokewalker
No, Azurril is one of the new baby Pokemon first introduced in Hoenn. Therefore it is impossible to get Azzurril in Pokemon silver, sorry.
no you can trade soulsilver pokemon to black
he is not in Pokemon soulsilver or Pokemon heartgold
You can't find azurril in leafgreen nor get it unless you trade one from ruby, sapphire or emerald.
POKEMON SOULSILVER come with a poke walker and the Soulsilver game
Pokemon soulsilver and Pokemon heartgold are basically the same game just different versions but i do recommend buying Pokemon soulsilver
SOulsilver
You CANNOT LEGALLY download Pokemon Soulsilver.
You can't catch bastiodon in Pokemon soulsilver.
You'll need to trade for it from Pokemon HeartGold. It is not avilable in the wild in Pokemon SoulSilver.
there is a mew in Pokemon soulsilver but you need to catch all leadndery Pokemon including event Pokemon
You cannot battle between a Pokemon Black game and a Pokemon Soulsilver game.