A Graveler west of that one town in Pearl where you get after that pesky fog route. Whatever its name was, I haven't played Sinnoh games in a while. I think I was grinding some water type (might have been Omanyte, I had an awesome one - by my standards at that time - on that file), was quite bored (since DPPt is, as I've probably said hundreds of times before and everyone knows anyways, waaay too slow) and suddenly the thing spawned. I don't really remember how I reacted at first, but I did throw the Masterball at it, being afraid of Selfdestruct. I thought about leveling the thing up and stuff, but then saw it had Mild nature and thus sucks. So I boxed it, and later, when I finally deleted my file (that file was probably the last one I played until waaay after actually beating it), the nameless orange/golden/whatever Graveler was deleted with it. Too bad.