to catch doexys in emerald you can't have your raquaza,groudon, or kyogre in your pokedex or else it won't show up.go the space center in mossdeep city and talk to the man looking out the window. once he says that they've sucessfully lanched rocket 371, hop on and take a ride up into space.doexys is only level 35 so all you need is level 40's with a recommended move "false swipe".doexys is still super rare so it may take a while just to find it.
Cheat to get the aurora ticket then go to birth island to capture deoxys.
Yes, You can catch Groudon in Pokemon Emerald.
You can't catch one in Pokemon Emerald.
No you cannot catch Entei in Pokemon Emerald.
You can't catch a Bellsprot in Pokemon Emerald. You trade it from Pokemon Leafgreen!
There are many Pokemon you catch that are similar in sapphire and emerald but there are many Pokemon emerald can only get and not sapphire.
Cressilia is a 4th generation Pokemon so you can't catch it in Pokemon Emerald.
You can't catch or obtain other trainers Pokemon in emerald.
Deyoxys is only available through a Nintendo Event (Not going on any more) Or you can use a Gameshark to get one.
you cant. You can only catch it in Pokemon emerald, but, you cant catch latias in emerald.
No you cannot catch Celebi in Pokemon Emerald.
You can onl catch LUNATONE in SAPPHIRE but you can catch solrock in emerald