Vain and territorial, blue dragons soar through the skies over deserts, preying on caravans and plundering herds and settlements in the verdant lands beyond the desert's reach. These dragons can also be found in dry steppes, searing badlands, and rocky coasts. They guard their territories against all potential competitors, especially brass dragons.

A blue dragon is recognized by its dramatic frilled ears and the massive ridged horn atop its blunt head. Rows of spikes extend back from its nostrils to line its brow, and cluster on its jutting lower jaw.

A blue dragon's scales vary in color from an iridescent azure to a deep indigo, polished to a glossy finish by the desert sands. As the dragon ages, its scales become thicker and harder, and its hide hums and crackles with static electricity. These effects intensify when the dragon is angry or about to attack, giving off an odor of ozone and dusty air.