By using the secret key, which was already distrubuted.
Unfortunately, Rotom does not transform in pokemon diamond, just in platinum, heartgold and soulsilver
To transform Rotom you must have the secret key then entering the Galactic building in Eterna. Then find an appliance room. sources: http://www.pokereview.net/dpmechanics/therotomfactor1.php
u need a special key i believe
You trade Rotom from platinum,diamond or pearl. In platinum/diamond/pearl you obtain rotom from the old chateau in eterna forest, at midnight. Rotom is unobtainable in hgss. If rotom is lead in your party, the elevator will work and you will be taken to a room filled with household appliances. Select and appliance and your rotom will transform.
i think u a secret key before you can change rotoms formes
In Pokemon Diamond and Pearl and Platinum which are the newest versions on the DS until the newer ones you catch Rotom after you get the national pokedex. Then you can transform him into different types.
No, but if you take rotom there, he will transform
only ditto to make more rotom
go to saffron city in kanto then go to the silph co. building then with your rotom in the first slot of your party go to the elevator in the building on the top-left side and your rotom will do something weird and you will be in the bacement. just go up to one of those machines and hit a then rotom will transform hope this helps by jtlove
To get it to become mow rotom, you have to have a secrect key. You can only get it by a Nintendo event or a cheat. After you got it you will be able to get a rotom key.
You have to trade it from Pokémon Pearl, Diamond or Platinum. You can still get its other forms by taking Rotom to the elevator in the Silph. Co and have him 1st in your party to activate the elevator. It will take you to a room filled with electrical appliances, choose one and it will transform.
it is ....... rotom