it is located in golden rod city south of national park
mr. Pokemon house
At his mom's house in Goldenrod.
it is in the city after pewter
it is in goldrod city
if its the arceus from Sinnoh then you will trigger the arceus event which is awesome
goldenrod city in a house there is a lady
ecruteak city
Go to Mr. Pokemon's house
you will find it in a house somewhere
In the grave house on the bottem right.
in ecruteak city on the left house next to the Pokemon center
sorry you have to trade it to Pokemon soul silver