somebodyawesome he sounded australian but he hasnt done anything yet he just arrived, he hasnt been formally introduced
im assuming he will be australian because owen has an accent and they make him hide it, so i think this guy would hide his accent if it wasnt part of the story line
and supposedly he is supposed to be a somewhat replacement of derek, they look a LITTLE similar but he is cardio so i dont think hes a direct replacement. rumors are that he will have a thing with meredith but we'll see