Somewhere in the aqua hideout you can find a master ball.
it is in the team aqua hideout by the electrodes
you can get a master ball in the team aqua hideout. Its in a room with four poke-balls.
it's in the team aqua hideout.
No only in aqua's hideout.
In team aqua's base
You get it from the team Aqua hideout.
you don't get the master ball from may in emerald, you get it in the team aqua/magma hideout in lilycove. that is the only way to get a master ball , unless you win the loto ticket drawing or use an actionreplay or gameshark.
In the Aqua Hideout.
Groudon is in emerald, it can be caught with a master ball, which can be found at team aqua's hideout just off of lilycove city.
he is at the top of team aqua HQ, after you beat him you get the master ball
In Team Aqua's Base also you can win one from the lottery in the lilycove city dept store.