You are an alien who was trapped on earth for a few months. Izuku helped you during those months. Your instincts imprinted on him.

12 years have passed, and you go back to Earth, finding Izuku in a battle and about to be attacked by the Slime Villain. Heroes and civilians are doing nothing. You get between the two and destroy the incoming attack. Izuku watches you with wide eyes.

(Describe appearance)