Hmmm now that you've mentioned it, I could see Rayquaza working actually.xD And maybe Kyogre? Since it's the creator of the sea really. And Ash did technically become king of the sea. LOL.xD And May is a peoples of the water?
And of course, the most obvious, it's part of the generation 3 trio.
gfdegshjwfgbhdnjs yes, I could see this work now!xD