firstly the Pokemon is called arceus and the way to get it is that you have to go to a event but it has finish so the ONLY way is to buy an action replay get the code for the azure Flute and go to mt cornet and you have to blow the flute and a height of stairs come up climb up the stairs and you will see arceus at level 80
You have to trade it from Diamond, Platinum or Pearl
Arceas has to be caught in Pokemon diamond, pearl, or platinum, then traded to Soul-Silver and HeartGold.
Sorry no way to. Trade with diamond or pearl
well, i don't think so but you can get it in the great marsh in Pokemon pearl and diamond
I don't know, maybe trade it once you get it in diamond/pearl (get azure flute and blow it at spear pillar)
You can't
Arceas
Sadly, you can't get Arceus in HeartGold or SoulSilver. The only way to have it in HG/SS is to trade it from either Diamond, Pearl or Platinum.
darkrai arceas (with plate)
U CAN!! i have an arceas lv 100 and it still works
go to spear pillar with it an you will get arceas if it is a azure flute
the best way to get arceas in Pokemon diamond might be hard for you but i bet you'll think it was worth it! i have all the Pokemon on earth and arceas might have been the second hardest to get you have to get 3 dialga's and 3palkia's then put all of them in your party then they'll morph together then somehow they turn into one arceas!! i was as surprised you are!!! it may sound impossible but i speak the truth!!!!You can also you action replay which is a lot easier FROM FPM