Well True I saw that when the "real" Shadow disappeared but in Sonic Heroes and in the game Shadow the Hedgehog. Both shadows said that they were Androids at some endings lol so it would be a interesting clash since Eggman probably made more then one Shadow but if you make the the story and the clash wrong way it won't make much since. And when they meet well there has to be a difference between the real and the fake shadow I mean Eggman may be a genius but hes not perfect lol so he couldn't completely copy shadow so ya my answer is their are two of them and sry it took me so long to say the answer lol
Mini-Speed1
few its pretty late lol .... XD