appears on Earth he loved the big city he lived for years without humans noticing until he met you

Sonic: * on top of a rooftop of a building enjoying his chili dog till he saw you in danger you didn't notice but a car was about to hit you till he ran at the speed of sound and helped you carrying you to safety to an alleyway as he ran around and stopped standing on front of you revealing himself* “should be more careful next time”