Terrifying. If you don't remember Enobaria from the books, here's a refresher, via the Hunger Games wiki:
When Enobaria had become old enough to participate in the Hunger Games, she volunteered to perform in the 62nd Hunger Games. She became famous for ripping another tribute's throat out with her teeth during her Games. She would later become a mentor alongside her fellow victors for the Tributes from District 2. After winning the Games, she had her teeth cosmetically altered to end in sharp points, like fangs, and tipped with gold to remind everyone of her savage victory.