In this, your OC or a Sonic character become my OC, Class.

This what he mostly looks like

Here's what I got so far.

Object TF: You find a pair of glasses on the ground near a mansion. Do you put them on?

Twinning TF: You found out recently that Class had a sibling who betrayed his family. Since then, Class never considered anyone else family besides his mother because of this. You decided to change his mind by finding a way to become his sibling.

Or you could just make it up!