(I'm too lazy to add the Sonic character names, but you can choose on who you want to be, or be an OC, sorry, wasn't in the mood to make a big story.)

You stay in your room as you had felt bad... something happened to Sonic, and he's been way different now... he's not the hero everyone knew...**anymore.**He has become a villain, and now the world of Mobius is in danger, mobians, and animals...and Sonic has even turned against his friends and against everyone else he was a hero to.