Age in Canon: 16-17
Age in 2015: 20-21
Facts about Lucas
The original list of names, the Roster, was written many years back, on a piece of yellowing, blue-ruled paper. At the top, it says, The Hunters of Serendipity Hill. The first name was Thomas Dwight Perry. The second name was Alan Bryce Perry.
And then, in different inks, as though one after the other, were the names Lucas Walters, Morgan Powell, Sadie Moore, and finally, in the newest of the inks, was Laura Bancroft. Throughout the years, the Roster looked a little abused, wrinkled and aging. The first name had the Perry crossed out in ink, and replaced by Houston instead.
The second name, though the person in question no longer walked the world, remained, and no one ever made any reference whatsoever to ever crossing it out, or removing it. It remains there to this day.