Wanted: Information on a mysterious dwarf

Well folks, make no mistake. There is a mystery afoot. We were all treated to the 6th Hobbit production video a few weeks ago, and towards the end of the ~12 minute video, we catch a glimpse of an unknown dwarf. Before reading any further, take a look for yourself, then jump past the break for a discussion of just who this guy might be.

Fleshing Out the Company: Bifur, Bofur, and Bombur

Just four more dwarves to go, and we'll have a complete crew (not counting a certain Mr. Baggins, of course, who we have yet to review). Next up are three dwarves who seem to have come from a slightly . . . different background, then all the others we've reviewed so far. It looks like this difference is going to be played up in the movie, but for a starting reference, lets hear from Tolkien himself:

Bifur, Bofur and Bombur were descended from Dwarves of Moria but were not of Durin's line.

–The Return of the King, App. A: Durin's Folk,  p. 361 (see footnote)

These three are not, in other words, royalty, and they stand alone in Thorin's Company, since the rest of the dwarves are all of Durin's direct line and closely related to Thorin himself. So, what do normal dwarves do with their time? Find out, Brave Reader, after the break: