Mallek loves it! He’s proud of his sharp teeth but prefers to use it to please his partner rather than to hurt anyone with them. Also, the feeling of skin on his mouth is just good. Smooth and warm.
His S/O loves the feeling of the sharp tips poking onto their skin, hard enough to leave marks but not enough to cause any serious pain or perfuration. He almost always pairs it with sucking, and it does leave marks every time he does it. What else could you expect from a troll with pretty much all teeth of his mouth being canines?