On a mission Eggman knocked Shadow out with his new security cameras. He...Changed Shadow and Shadow got fired for it. Shadow soon gets flowers and a love note. He throws them away every time but soon gets an unexpected visitor.
Sonic used to be a free Mobian...until The War between Eggman and Mobians started and ended, that humans started to hunt down Mobians going as far as putting them into camps, breeding farms, or forced to fight a longside military forces. The hedgehog does remember much besides pain...and torture, by the hands of G.U.N, but he didn't know they were planning on using him for a big project.