Behold! The Engineer, Guild Wars 2's second-to-last profession. He is a medium armor profession, like the Ranger and the Thief. According to the official Guild Wars 2 site, the Engineer is
Masters of mechanical mayhem, engineers tinker with explosives, gadgets, elixirs, and all manner of deployable devices. They can take control of an area by placing turrets, support their allies with alchemic weaponry, or lay waste to foes with a wide array of mines, bombs, and grenades.