You can't. You only get one without trading it from another Pokemon game.
there is only one masterball
for Pokemon there are no codes
No.
defeat all rockets and giovani then a man will ive you a masterball
i masterball
No but you can have a friend trade you a Pokemon holding the masterball they got.
You get the masterball when you go and defeat Team rocket
It's impossible to get another Master Ball unless you restart the game or someone trades you a Pokemon with a master ball.
you cant but u get it from the Silph Co. president.
The president of silph co will give you one.
Find it on a route in the grass then use the masterball.
Once you have the masterball you get in leafgreen the only way to get another one is to have a firered or ruby or sapphire or emerald trade you a Pokemon that is holding a masterball.