You can't you just have to beat him and get it
Chat with our AI personalities
where to find a azure flute without action replay and cheating in pokemon platinum
You can't without an action replay
Depends on what game you're on. And aren't there other ways of getting different Pokémon than catchable in your game than trading over platinum? Like importing from Ruby/Sapphire/Emerald
No. The only way to move Pokemon from Platinum is through a trade. 1 for 1.
The Trophy Garden is the only place to get Ditto in Pokemon Platinum, without trading or cheating of course.