Fans of Sega's Sonic the Hedgehog are a clever group with technical talent and lots of free time. I say this because of the past few days I keep stumbling across hacks of the various Sonic games that have been changed to remove the iconic hedgehog as a playable character and replace him with the franchise's supporting characters. If you want to play the original Sonic the Hedgehog as Shadow the Hedgehog, Sonic the Hedgehog 2 as Amy Rose (complete with hammer) & Cream the Rabbit, or Sonic the Hedgehog 3 as Metal Sonic, then the fan community has you covered. Check out these YouTube videos of Sonic's friends and foes appearing in places they shouldn't.
So what is Sonic doing while the other characters are stealing the spotlight? Nosed out of his traditional place, he's gone across the street to save the Mushroom Kingdom in this hack of Super Mario 64 that replaces the pudgy plumber with the blue blur.