Noivern is a large, draconian bat-like Pokémon. Noivern stands upright on its two clawed feet when it isn't flying. Its body is mainly purple and black in color. It has large, black and purple wings, which bear red, claw-like digits at their tips. The thin flaps of skin connecting Noivern's wings to its body are teal in color. It has a fluffy white collar of fur encircling the lower portion of its neck. Its underbelly is purple while its back and extremities are black, with red claws. Noivern has piercing yellow eyes and v-shaped eyebrow-like features. Its maw has two pointed black features just below its nostrils. Its ears, which resemble loudspeakers, are very large and rounded with teal-colored insides.
Supposedly, it will attack anything that wanders too close to it. The ultrasonic sound waves Noivern emits are strong enough to shatter large boulders.
It uses the Normal-type move Boomburst, which emits an explosive sound wave that attacks all nearby enemies and allies.