Monsters (Loki x Reader)

Hi, my name is Y/n L/n. I have been working with the Avengers for a few months now and I am comfortable being myself around them. I tend to be the quieter Avenger at times and I have shape-shifting powers did I forget to mention that I'm short? One day Thor came home with a 'guest', this 'guest' not only turned out to be another soon-to-be inhabitant of the Tower but also changed my life completely...

Expert:

I walked out of the elevator and grabbed a snack from the pantry then headed towards the couch, I started to eat my snack when the elevator made a ding noise. I turned around on the couch and saw Thor walk out with a handsome raven-haired man following behind him, the raven-haired man is wearing green armour with chains and a muzzle.

Who is he? Why is he here? Why does he have a muzzle on? It looks like he is wearing the same type of clothes as Thor, are they both from Asgard?