Your master ball

[Jonah the Slaking]

I used mine in Emerald on a Bagon. Cuz I REALLY WANTED IT.

 

[Agonist]

I cloned mine on Emerald, although I'm not planning on actually using it.

 

[Sceptile Leaf Blade]

I still have mine. Got Regirock, Regice, Registeel, Latios, Kyogre, Groudon, and Rayquaza all without the Master Ball.

 

[Jordie]

In Ruby, I used it on Latios
Still have it in Emerald

 

[Serebii!]

I caught a Groudon with a Masterball in Ruby, I should of saved it so I could catch a Latios

 

[cookies kill you]

in my nuzlocke emerald i used it on quaza i didnt want to have to deal with the extreme speed rest fly and outrage set because it would destroy me trying to catch it xD plus my pokes were lvl 40

 

[★ Lucario ★]

On (roaming) Latios!

 

[empoleon mike]

In RSE i always used it on the Lati twins

In FR/LG i was planning to use it on (i think it was Suicune) but i later found that my brother had been playing my LG and had used the master ball to catch a Magmar

 

[TeamGalacticMars]

In Platinum I used it on Palkia cerssilia Garintaina and Hetran <----- LOL I cannot spell anyone of those pokemon! XD

Pokemon White Zekrom

 

[Dragalge]

The Lati twins are the ones I use it on in RSE while in FR/LG on Mewtwo.

 

[empoleon mike]

Exactly what i did/planned to do. Except my brother thought that a magmar was a good thing to catch in a master ball

 

[Callie-Rose]

I used a Master Ball on everything, due to the cloning glitch in Emerald > Thanks to that, all my 3rd and 4th Gen Games have pretty much unlimited Master Balls.

 

[spyclone138]

Cloned my masterball on my emerald version. One for latias because roaming pokemon are difficult to track down and catch them. And the other I am saving for a shiny. Most likely a shiny legendary via SR

 

[frenky]

in ruby on latios , in fire red on mewtwo