Amaura is a quadrupedal, dinosaurian Pokémon that resembles a sauropod. It is light blue with a white underbelly. It has a long neck, a short, stubby tail, and a single white claw on each hind foot. Above each of its large, deep blue eyes is an iridescent, sail-like structure. Typically, the sails are yellow at the bottom and fade into pink toward the tips. On each side of its body is a dark blue crystal. Pokémon-Amie has demonstrated that its sails can change color with its mood and the crystals on its sides permanently remain at freezing temperatures.
Amaura is a calm Pokémon that lived over 100 million years ago. It lived in a cold land to avoid predators such as Tyrantrum. Despite its restoration, it is not expected to live long in the heat of current climates. As seen in the anime, it can create auroras. Some Amaura were discovered frozen in ice.
Amaura has some similarities with Tyrunt. Both are Rock-type Pokémon introduced in Generation VI with a base stat total of 362 and evolve starting at level 39, although Amaura evolves at night instead of during the day.
Amaura is based on a young sauropod dinosaur, specifically the Amargasaurus, which were speculated to have skin sail extensions on their vertebral spines. According to designer Hitoshi Ariga, he decided to design Pokémon based on sauropods to pair with Tyrantrum's evolutionary line, and Amargasaurus was chosen as a base to differentiate it from other long-necked dinosaur-like Pokémon such as Lapras, Meganium, or Deino. Amaura also shares traits with various other species of Diplodocoidea (a classification of sauropods which includes Amargasaurus).
The color-changing sails upon Amaura's head appear to be based on auroras, which are predominantly seen in polar regions and are most visible at night; these may also inspire Amaura's Ice-type and the fact that it can only evolve at night.
Amaura may be a combination of Amargasaurus and aurora.