on Pokemon diamond and pearl,you have to beat the elite four 3 times in platinum you can get a dusclops in the spring path.
Capture all the Dusclops in Noir Forest then the screen will go to the middle of the forest then Duscnoir will appear
It evolves at level 37 into dusclops then if you trade dusclops with a 'reaper cloth' it will evolve again into duscnoir
machamp alakazam gengar steelix slowking kingdra scizor porygon2 porygonz electrivire magmotor ryphirior duscnoir and there may be few more i think
I'm not completely sure, but I think that you can only get a Reaper Cloth in Diamond and Pearl, because Duskonoir is a Sinnoh region Pokemon. yeah he's right. you will hav to stik with dusclops because duscnoir wasnt created when emerald came out. he's a new Pokemon for the sinoh regon ( diamond pearl .) but if you get him in d or p i sugjest not to evolve him till he knows moves you like because he cant learn any new moves after evolution. hope this help you!