nothing. you only need to have 60 Pokemon beat the league and go to prof. oak
you have to trade them from other Pokemon games
transfer them from Pokemon coliseum or xd
Ho-oh, Lugia, Deoxys.
go upstairs to any Pokemon center
you have to use action replay or to get alot of Pokemon migrate from a firered and use action replay on firered to get all Pokemon except the one from diamond
every where
Pokemon's 1-384
Yes
Catch all the Pokemon!
u can get all of them...
You have to trade and catch as much Pokemon as you can
all over
It is just a doorway there is nothing you need in the game behind it. it is a doorway to Mew you can open it by collecting all the pokemon from firered and lefgreen as well as emerald.
YES
By trading and catching them i think
In Pokemon firered you can't, but in Pokemon leafgreen you can get it then trade it to Pokemon firered.
you have to trade them from other Pokemon games