You get him in trade.
Its ACEUS
i think its aceus
i just recommend cheats. Mewtwo
you dont you pea brain
yes because arceus can be any type of pokemon
There is no way- unless you transfer it
Yes and no you see if you watch the Pokemon movie aceus and the Jewel of life their are 5 dimensions ours girtinas, palkias, dialgas, and aceus aceus universe is about twice as big as all the others put together so ya he made his which led to cosmic reactions and then the others where made (with the help of girtina, palkia, dialga of course).
It should be an event Pokemon although you could cheat using an action replay
There is no best Pokemon on Pokemon HeartGold.
there is no Pokemon Mansion in Heartgold.
They are not in Pokemon HeartGold
where is the pokemon transfer lab in heartgold