After you beat the 8th and final gym leader in blackthorn city professor Elm will call you saying to stop by his lab. professor elm will then 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
CYRUS IS THEN IN GALACTIC HQ WHEN YOU FIND HIM YOU BATTLE HIM IF YOU WIN HE GIVES YOU THE MASTER BALL. (The master ball should go to the FIRST Pokemon in your team)
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.
You can find it in Archie's Base. Make sure to grab it, because there is no way to come back later and get it if you don't.
When you get the master ball and national dex which is before you battle N. Prof junipers dad gives it to you.
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...:/
Once you have 8 bages, you talk to pofessor Elm and he will give you a master ball.
you can not get a master ball in Pokemon platinum only the one professor Rowan gives you