It's the Copycat Master Buffoon disguised as a rock by Cloud Temple. He comes back to life as a rock when you leave the map like normally cutting down a tree or destroying a rock though. You can talk to him since you made him invisible. Also in Marble I found the cut Copycat and the lake Mimikat, you can cut the Copycat guy without asking! :D Also I prefer Tyradino and Weedalgu rather than Babos and Osoe, it helps since I used Blaziken and Ludicolo in Emerald.