An Unclassified Life Form in the World of Baten Kaitos is a living thing or species of living things with a mysterious or generally unknown history which prevent it form being classified as another type of life form such as Human, Animal, Monster, Plant, ect... In the narrative of the Baten Kaitos series, only a few important are left uncategorizable as a type of life form, but two of which, Wiseman and the Dark Brethren, have major roles. The rest are either featured in sidequests or only mentioned in Magnus descriptions.