Just saying there is 135 Pokemon not 200 second of all there is no way to get all the Pokemon unless you go to Nintendo events or have access to other games like ruby and sapphire and firered and leafgreen and Pokemon colosseum and Pokemon xd gale of darkness.
It is not possible to catch Mew is Pokémon Emerald version without using cheats. The only way to get it would be to trade.
Its not possible to catch Ho-oh in emerald to get one receive one from Pokemon colosseum.
in pokemon emerald
No, not without cheating.
All if you have a gameshark
You Can't
Yes, You can catch Groudon in Pokemon Emerald.
You can't catch one in Pokemon Emerald.
Actually, it's impossible to catch Milotic in any Pokemon Game. But, it's possible to catch its pre-evolution, Feebas. To catch Feebas in Pokemon Emerald, there is a complicated way. But, I know that you can catch Feebas in Route 119. Hope I helped :)
No you cannot catch Entei in Pokemon Emerald.
You can't catch a Bellsprot in Pokemon Emerald. You trade it from Pokemon Leafgreen!
You don't.