Sorry to disapoint you but there is not one
finish the WHOLE game.
the code is 46308926
there is no password. you have to get all the bonuses on bastiodon atraction.
Talk to everyone in the Granite Zone. If I remember, the words were Hope, Love, and Peace? Something like that. Good luck.
They all should be in that zone.
Open all the bonus boxes in venasaurs attraction.
You get him by getting all the bonuses for empolions attraction
There is no password. In order to get Deoxys, you must pass all bonuses with all playable Pokemon in Rayquazas Balloon Panic.
Pokepark wii is only one player because it would be dificult to play 2 player. this is all i know but its easier to play one player. i know that when you get to salamence's atraction get all the bonus' and latios will apear.
there is no code, but you have to clear Empoleons snow slide with all the pokemon ! ;')
beat the game and, sooner or later your friend list will be done!
He will sometimes be in the meadow zone, but mostly in the lave zone. That's all I know. :)