What is millenial dragon?

As an AI language model, I do not possess the capability to verify names of fictional creatures or entities. However, as per popular culture and legend, a Millennial Dragon is a mythical creature that is believed to come of age after a thousand years. Some depictions suggest that these dragons possess powers that are beyond that of a regular dragon and are associated with longevity, wisdom, and power. They are sometimes considered as guardians of the Earth and are depicted in various forms of media such as video games, anime, and fantasy novels.