He's always left behind.

And that's the fun part, the chase, the hunt. That's what he's there for. He's on the Guard so he can hunt the people that try to run, track them down and burn them to ash. He's part of the Volturi and he does his job, well and with pride. Demetri knows that he's good at what he does - it's why he's a part of the Volturi after all. They only take the best.

Being left behind is the easy part, it's the next part that's fun.

And that's why he doesn't mind being left behind.

He loves to follow.