This towering, fearsome-looking people, once believed to be a race of monsters, are actually fairly kind of heart, and are consummate civil engineers. The bulk of Braelun’s navigable roads, paths, and bridges are there thanks to the trolls. While construction tends to be a collaborative effort with local races and, often enough, dwarves, finished projects are tended to solely by their creators, patrolled by a given troll along whatever length he or she may have been responsible for. While typically gentle, and often helpful to travelers, beware the wrath of a troll whose work you’ve marred or demolished.
One of the new tank races in D&D4 was stupid, so I worked these guys in instead. Visually, think of the trolls from Berserk and you’ve got a great concept of how they look. Just with less people-eating.