Child trouble - Shadow x Reader

You were helping Sonic and the others fight against three giant Eggman robots((just any three))and at the end Shadow comes in and destroys all of them. You both talk a bit since he never seen you before, and he wondered why you were fighting against the robots.

You then saw that Eggman was about to fire something at him, so you push him out of the way and step in front. The original plan was for the beam to hit Shadow and drain his chaos energy, but since you didn't have any what happens when you turn into a five year old child??