your a ghost who died by getting shot by eggman you don't know how you died but sonic and amy know and they can't tell you and you share the body with spike sonic and amy are aware of your existence and spike's spirit can talk

Amy: SPIKE!! She was shocked and worried

Spike the baby hedgehog with the same colored fur and eyes as Sonic up on the tree scared and in tears

Sonic: HOW DID YOU GET UP THERE?!?!

Amy: her voice sounds intense DON'T WORRY HONEY!! DAD WILL GO TO GET YOU DOWN!

Sonic: Do A Flip Sonic said with a smug smile

Amy didn't find it funny as she looked pissed off as her hands were on her waist as her right arm holding her piko piko hammer

Sonic: I - I Mean Coming Son!