in the union building
Chat with our AI personalities
yes
There is no griesous orb in Pokemon pearl. When you enter the union room with a Pokemon holding it while playing Pokemon platinum, it will go into your bag and you cannot give it back until you exit the room. You cannot get it in pearl sorry.
Get a Haunter and trade it with a friend in the Union Room, then it will evolve into Gengar if it doesn't have an everstone.
go to the union room and trade with a different trainer (make sure someone else playing pearl, diamond, silver gold or any Pokemon game is near you and is in the union room
you can't get it in Pearl, the orb can't be traded from the game it originates. If you decided to trade it, when u enter the union room it will go back to your bag.