All you are wrong.go to new bark town and talk to the lady near the lab,then go inside your house two times,then go infront of prof.elm's postbox face it and press A,then holding down L run into the grass still holding L.note:only bring one pokemon must be starter pokemon
You can get him from an event when the movie comes out
You must go to a nintendo memorial event [though I don't think they do those anymore] or you must have the action replay code.
If you go to Toys R Us on november 7th through the 15th you will receive ARCEUS.
The both of you wrong, the easy way to get arceus is to get it by via wireless, they will give you the item called the azure flute, take the flute from the delivery men and go to spear pillar there is a flute stand right in front of you when you enter spear pillar use the flute and the hallo stares will appear in magic and at last you found the third legendary pokemon arceus, I over herd that arceus has an ability to change his type by giving him the plates,you'll find those plates in the game map or by digging in the underground,hope my information got to your mind,oh and the easy way to get him is using dark pokemon called darkrai,first sleep him,second weak him,last catch him,or get a master ball in any GBA games
Action Replay.
An event in november 2009 go to toys r us and download it there
AR and cheating or events. .
You give a nugget to your first and last pokemon go into an kind of grass and arceus will show up
You must have action replay first find a cheat to get the azura flute 1 go to any pokemart talk to the guy in the green 2 he'll give you it 3 go to speir piler go althe way forwerd and say yes to what pops up (save on the stares) and there you go
You can get it thourgh the event or action replay but it might crqash your system
Uh...I'm wondering where to find arceus at, I don't want to use cheats...(this isn't an answer)