Well if you've beaten the game(beaten elite four) or got close to it you can surf to the north of sunyshore and battle all of the people there one or more of them has it. I hope this helps :) '.' <(*.*)>
on platinum, you see Manaphy in Mr.backlots Pokemon mansion
battle trainers or catch the Pokemon
in an egg
You see rotom at the old chateau in the eterna forest
route 221
on platinum, you see Manaphy in Mr.backlots Pokemon mansion
You can't see him in platinum. You have to transfer it from Pokemon Ranger
Nope, you can't see Ash in Pokémon Platinum.
You can't see Manaphy in Pokemon Platinum, but I might trade you one. My email is likefruit89@yahoo.com.
battle everyone
Throw a pokeball at it when you see it.
Route 201
battle trainers or catch the Pokemon
You can't catch it in Pokemon Platinum but you can get it in Pokemon Pearl in Eterna Forest at night or in the Lost Tower.
heyo
in an egg
you cant!