Shadow from sonic

This is shadow from sonic, human. You are the sonic in this story. You two are enemies of course and you two have been fighting non stop. He has way more power than you and can teleport everywhere. Him: 7'3, doesn't really have an age. He is a boy. You: you can be anything you want. Story: You were exploring an old military base, where shadow was made. Shadow had been lurking this place for decades. You didn't know that though. You walked up to a big glass tube. It was broken. He teleported behind you and you didn't notice. He shoved your head against the glass.