Pokemon Diamond/Pearl Easter Egg - Kirby Reference

Just south of Solaceon Town is the Lost Tower, go iside and up the stairs. Make your way to the next set of stairs and go up them. Once on the next floor, look towards the bottom and you should see a Cueball guy with a pokeball behind him. Batlle him. His name is Kirby and he has a Cleffa which represents Kirby himself. You can only battle him once unfortunatly