This section temporarily contains information copied directly from Bulbapedia, and needs to be rewritten so not to be classified as plagiarism.
Aurorus is a quadruped, dinosaurian Pokémon that is similar to sauropods. It is primarily blue with a lighter underside. There are two lines of small ice crystals running the length of its body, one line on each side. These crystals produce freezing air reaching temperatures of -240 degrees Fahrenheit. Aurorus uses this ability to create ice walls for protection.
A white, V-shaped mark covers the top of its head with another ice crystal in the center, giving it the appearance of wearing a tiara or a headress. Two large, flowing sails extend from the top of its head and run down its long neck. The sails are pale whitish-yellow at the base, and fade into a pale bluish-purple at the edges. There are three clawed toes on its hind legs, but one large nail and a single claw on its forelegs. The tip of its long, tapering tail is teardrop-shaped and curls inward.