you will find one in
team aqua's hideoutThe professor
you can't
in team aquas hide out
from your enemy teams base
I am pretty sure you get a masterball.
In team aqua's hideout
You must either get a masterball from team aqua base or game corner. Then you must fight a legendary and throw the masterball right away.
give a Pokemon the masterball and put it in the daycare with a ditto then it will be cloned!!!!!!
u run into her in random places u well want to keep the masterball
There is only one masterball in sapphire and to get it you need to be through a lot of the game. The only place to get it is in team Aquas Hideout. Oh, there is one other place which is Lilycove Department store, where you can draw a lottery. Match all 5 numbers and you win a masterball.
fire red: after you give the sapphire to celio, now you can trade with Pokemon ruby, sapphire and emerald
Well, if you don't have a masterball, use one... but you can catch one with an ultraball. My friend did. I ran out of them!