Arceus is not possible to find in Pokemon Ruby. It was released in 2007 with Pokemon Diamond and Pearl
You can not FIND arceus in a city. You must find it through the evnt for Pearl Daimond or Platinum.
Pokemon Diamond, Pearl, and Platinum have Arceus.
Arceus is unobtainable. With the game it is in (Such as; Pokemon Pearl, Diamond, Platinum.) it cannot connect to the Gameboy Advance to transfer.
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Arceus
to get arceus go into the navel rock cave and find him loser
I think arceus is the the strongest Pokemon in diamond and pearl. Also no moves are supereffective on Spiritomb and arceus
You'll need to trade from the Pokemon HeartGold, Diamond, Pearl, and Platinum.
arceus
you get arceus at spear piller
you cant find arceus in Pokemon heart gold you need to transfer it over from Pokemon diamond or pearl . you can find it in the hall of origin if you have a azure flute you go to the spear pillar and you will see him at level 80 so be prepared