He's not old enough for this. He's not sure how old he is. A lot of information had been lost or muddled over time, except that his Uncle was Chuck, and Uncle Chuck had taught him how to fly. Sonic, Tails, and Amy, flee Robotropilous when Robotnik finds them. But Chaos and Fate have different plans for them and eventually all loose ends have to be finished.

The best way to keep Sonic contained is to keep him occupied. Falsifying escape attempts should do the trick. Alternate way that Sonic's captivity on the death egg went. Sonic Forces AU