get all the johto badges and go to prof elms lab talk to him and he will give you the masterball.
You can't.
The masterball.
I can't give details but you need an replay. Hope I helped kinda
in different places it depends on what game you have (in heartgold and soul silver he is hiding in cerulean cave id use a masterball)
there is only one masterball per game, you'll have to attach it to a Pokemon and trade it
All you need is a masterball you just go to ho oh, click on it, and battle and use masterball. It will be at either lv 50 or 40 I forgot I think 50
you can't, I'm sorry to say. Only 1 masterball per game, unless you want to cheat.
premier ball at night or pokeball in the morning and in the afternoon masterball
you cannot buy master balls in any pkmn game. although there are action replay codes that can give u infinite mb's
you can get a masterball by prof. elm or get the big prize at the lottery in goldenrod (you must be very lucky to win so do lots of trades at gts)
Get ALOT of ultra balls,weaken it to red,andif you want to use a masterball get 999 with action replay or use the one you obtained from prof.Elm.
Not really. If, say, you got ENTEI online, used your masterball on SENCINE, and started with the grass pokemon, you would be unstoppable.