Umbral Aniimo are a rare cosmetic variant in Aniimo, and finding one depends largely on random chance. Players can use three known methods to improve their chances, but none guarantees success, while further options may be added in future updates.

The creatures have a dark-purple, starry appearance and glowing pink eyes, and are guaranteed to have Perfect potential. They can be evolved, but doing so permanently removes their Umbral appearance, although their stats and Perfect status remain unchanged.