Once you have 8 bages, you talk to pofessor Elm and he will give you a master ball.
You cannot find a second master ball however you can trade Pokemon to get another Pokemon with a master ball or use an action replay
First you find it and then throw a poke ball at it. (Preferably an ultra ball).
in Johto, Safron after you defeat red!
The Master Ball isn't a necessity, since any Pokemon can be caught without it. Use it when you have spent around three days (a couple hours a day) trying to catch a rare Pokemon (legendary only) with Ultra Balls at low HP and with a status problem. It is wise to do so, since you may find that a Pokemon may be tough to catch and you might not have your Master Ball.
Profeser gives it to you after you get all ehgit bages
no
Fly TO Lilicove city and Surf ontop and you will find a cave,go inside and find the master ball
After you defeat Giovanni in Sliph Co. the President will give you the MASTER BALL.
no I'm sorry
there is only one master ball that you get in firered
Use A Master Ball Or Ultra Ball To Catch. But I Think It is Hard To Find Master Ball...:/
you can not get a master ball in Pokemon platinum only the one professor Rowan gives you