The art muesum is located at Lilycove City, at the top left.
Fill the Paints of Second floor.To this complete all Master Ranks of Contests.
in the oceanic museum
Oceanic Museum in Slateport City
If you win a Master Rank contest, a picture of your winning Pokemon will appear there. Cool contest - red frame, beauty contest - blue frame, and so on.
go to the shipyard and talk to some dudes
you want to beat them in 2ft. of that ,,libary,, its museum.
OK so first you will need to win the Master Rank of the Pokemon Contest to one Pokemon then talk to the painter and it will be in the museum.
You deliver Devon's Goods to Captain Stern who is in Slateport City's museum.
Pokemon Ruby has Pokemon that Pokemon Sapphire does not and Pokemon Sapphire has Pokemon that Pokemon Ruby does not.
There is no Pokemon mansion in sapphire.
You must win a Master Rank Contest by a certain number of points above the others, then the artist will paint your Pokemon and put it in the Lilycove Museum.
He is not in Pokemon: Sapphire. You will not be able to find him. He is in Pokemon: Diamond, Pokemon: Pearl, and Pokemon: Platinum. You will definitely have trouble finding him in Pokemon: Sapphire.