NO you need action replay
You cannot catch the legendary palkia on pokemon platinum but however you can use action replay to get it (most likely cheating)
No, you cannot catch a mew in Pokemon Platinum without cheating.
no
try to catch your legendary. It varies on which legendary depending on what starter you chose.
you have to either catch a legendary or raise a Pokemon
Just catch them,you dummy!
The only way to catch Arceus in Pokemon Platinum is by using the Azure Flute or cheating. The Azure Flute is an event item that sadly was never distributed. This means the only way to catch Arceus is by cheating.
you can't get ho-oh in Pokemon platinum only by cheating with AR or r4 or migrate it of Pokemon gold
you cant. You can only do that on platinum):
trade from other Pokemon games u cant catch it other wise
There is no way You cant Celebi Whitout cheating Unless there is a NINTENDO EVENT.
You can catch more legendary pokemons on platinum. So you can catch more on Platinum, then the other games :)