Who is Boss from Uglies and what is their importance?

The Boss is an older man living in the Smoke. The Boss is in his forties or fifties and has aged naturally, presenting a face to Tally like nothing she has ever seen before. The Boss is also the librarian at the Smoke. The Boss has a collection of magazines from the past that has pictures of people as they lived during what Tally refers to as the time of the Rusties. The Boss is killed attempting to save these magazines from the Special Circumstances invaders.