Thirty-four years old tall standing lad, impressive at one meter eighty-seven, Matthias doesn't really match the delicate and precious counter-tenor stereotype... 
How convenient for him!!!
Cheeky as he is, he uses it to better surprise, entertain or move audiences.
He also loves bending the rules and often borrows arias from the Mezzos' repertoire, which they don't seem to mind... if you disregard the weekly death threats!