srry, but u can't
You cannot get Giratina in Pokemon Emerald. Emerald is a third generation Pokemon game, and Giratina didn't appear until the fourth generation, with Diamond and Pearl.
Pokemon Pearl is in generation IV and is in the Sinnoh region. Emerald is in generation III and is in the Hoenn region. You can catch way more Pokemon in Pearl than Emerald.
You're thinking of generation 4, Pokemon Ruby/Sapphire/Emerald is generation 3. In generation 4 they added a de-evoultion of pokemon like Snorlax.
Can get one, in emerald its a fourth gen pokemon.
Lucario as well as other 4th generation Pokemon were not created in any generation Pokemon game before it meaning they don't exist in Pokemon emerald or anything before Pokemon emerald.
Cressilia is a 4th generation Pokemon so you can't catch it in Pokemon Emerald.
Any Pokemon can be caught in Pal Park except the Pokemon of the fourth generation, This is because you can migrate your Pokemon from Sapphire, ruby, emerald, firred or leafgreen. so if you wanted you could fight a mewtwo in the park.
aipom's evole is a Pokemon from the next generation after emerald so its impossible to receive him.
You can't get new Pokemon into old games. Lucario is a 4th generation Pokemon and emerald is a 3rd generation game.
What are you? a moron? It can't be obtained in EMERALD even WITH cheating, because EMERALD is a 3rd generation game, and ARCEUS is a 4th generation Pokemon
No. In Pokemon Emerald Version, you can only obtain Pokemon from generations 1, 2 and 3.
He is a generation 4 pokemon, and therefore not obtainable in emerald