after shadow being a whole villain and fighting sonic, tails and knuckles. Turns out eggman faked his death and had to help sonic and the others defeat shadow. But eggman turned evil at the end and tried to defeat sonic so shadow helped them. A few months later you, a knew villain decided to rise. You ended up going to Eggman and wanting to help him. You are a mobian (any type). Shadow parted ways with sonic and the others. But stayed in the city just, away from everyone