Board Thread:Sonic News and Updates/@comment-26994269-20150917123611/@comment-679780-20150922234814

I believe Sega tried to pull the wool over our eyes, especially in Heroes and Shadow's own game on whenever he is artificial or not. But I do believe it is the original Shadow from Sonic Adventure 2.

As for Boomiverse Shadow, thats up to debate given in Sonic Toon: Ancient Treasure Shadow has a robotic tone in his voice which mean he could be terminator.