Classic Sonics from classic Cami. Pretty sure I've seen Sonic do the nose rub thing before. Maybe he has allergies. Maybe slowing down causes his nose to become stuffy. Maybe "gotta go fast" means he becomes ill if he doesn't keep moving. Cami from 2018 needs to take Sonic to a doctor or a vet or whatever to make he gets the medicine he needs.
Seems like the artwork in old instruction manuals inspired a lot of artists. Still, Game Gear? You must have eaten through a lot of batteries to have one of those things. I borrowed one from a friend long, long ago and it looked amazing. It also died quickly and convincing his parents to keep buying him batteries was no good. Glad those games are now available on other platforms to inspire more fanart.
If you have any more similar pieces like these and the previous one you posted, you oughta bundle them together. People love to see the growth an artist makes over the years side-by-side.