Demetri

Demetri is a vampire from Twilight.

Abilities
Tracking Sense: Demetri's gift is tracking; he catches the "tenor" or "flavor" of a person's thoughts or from anyone he met in the past and uses it to follow his targets until he finds them. No matter where his targets escape to, he can find them anywhere. It is believed that he would not be able to track Bella, since she is protected from mental abilities. However, it is still said in New Moon that his powers are far more powerful than James's, because he can track people from all across the world, while James needed to be relatively close to the victim.

He is considered to be the greatest tracker in the world. That is why Aro recruited him, because he does not surround himself with second-bests. The Volturi had a tracker before him, but when they heard of his superior tracking power they replaced the tracker immediately, after dissolving Demetri's bonds with Amun.