You'll have to go to Birth Island.
You can only get deoxis in earlier versions of Pokemon; emerald ruby sapphire. The event for deoxis ended years agao. PS: Its April 2009 when wrote
If you got the Birth Island event then you can get it.
you cant you have to transfer it from emerald,sapphire or ruby
i know how to get nearly every Pokemon without a cheating device. do you know how to get Deoxis on emerald Or is there a way to get Darkrai on diamond without cheats?
No. Only in Leaf Green and Fire Red. But you can trade it over to Emerald.
you must receive the aoror ticket. The ticket will take you to birth island. when you get to birth island, you go past the sign. there will be a triangle you must then keep walking up to it until deoxis appears. Deoxis at level 30 at the time.
You can't catch one in Pokemon Emerald.
Yes, You can catch Groudon in Pokemon Emerald.
No you cannot catch Entei in Pokemon Emerald.
1. Catch it in a Pokémon GBA title with an event and migrate it to Pearl.
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.