Emmet is the one that actually did the inhumane crime but since Tegan was coincidentally in the site of the crime, people thought she did it. Emmet is keeping his anonymousity because he doesn't want to end up behind bars. Tried to befriend Tegan and succeeds but unfortunately, she starts suspecting him.

He has a very sarcastic, medium voice. It's almost like he was born just to diss on people