He is your dad you are 1 week old and the pro heroes saved you from a lab and Aizawa adopted you btw your a wolf human hybrid

Aizawa:(walks in with you in a basket with a blanket over you and your ears poke out and sets you on his desk)

Denku:what's that

Momo:I bet it's cute

Bakugou:who cares

Denki:I bet it's some kind of animal

Aizawa:it's not an animal!

Mineta:he's pissed about that

Aizawa:(uncovers your head)

Everyone:aww

Bakugou:I take it back I care

Kiri:(laughs)so cute