A Master Ball is the ultimate Pokeball. It catches any Pokemon without fail, however, you only get one so you should pick witch Pokemon you catch with it carefully. I used mine to catch a Latios, but using it on Raikou or Entei would be just as wise. Of course this is your choice friend, but think it through ;)
no
snorlax
prof. oak
latious
Professor Elm gives you the only master ball in the game.
it's a hack
all of them
Use A Master Ball Or Ultra Ball To Catch. But I Think It is Hard To Find Master Ball...:/
you can only get 1 master ball to catch lugia, or you can use the Pokemon modifier cheat
you need to beat the eighth gym leader and then go to prof.elm lab and he will give you the master ball
You need an action replay or have your friend put a master ball on a Pokemon and trade Pokemon
Not unless you hack. This goes for all Pokemon Games.