When you have the National Dex, go to Sailor Eldrich's house in Canalave City. Sailor Eldrich's son is trapped in an eternal nightmare that Darkrai put on him. Talk to Sailor Eldrich, and he'll take you to Fullmoon Island to find the Lunar Wing. On Fullmoon Island, you will see Cresselia, who will run away, leaving the Lunar Wing behind. You can cure Sailor ELdrich's son and then chase down Creselia. If you just need to see her, then when she runs away on Fullmoon Island, she will be added to your Dex, so that's all good.
You will have to trade it from Diamond, Pearl or Platinum to get one.
I am not sure how to catch darkrai or creselia but to obtain Palkia or Dialga you have to go to Spear Pillar in mount Cornet.
where do i find a totodile in Pokemon diamond/pearl on nintendods
you cant find rayquaza on diamond or pearl its from Emreld
you cannot get a mew in diamond and pearl so you'll have to get the code which i don't have.
You can't catch it on Diamond, but on Pearl you can find it in the Eterna Forest at night.
you can find creselia on moonlight island but i dont know about darkrai.
you can only find a cranidos on diamond and a shieldon on pearl
You cant find it, it's not an HM in Diamond, Pearl, and Platinum
Looker dosent exist in Diamond and Pearl
you can't catch it in diamond, only in pearl
You can't find a ho oh in diamond or pearl you can only migrate it over.