Dragon/Dragon Lord

Dragon Kings (竜王属) are the most powerful among the dragon race and are closer to semi-spiritual lifeforms. This evolution is attained only after spending several centuries as an Arch Dragon. They boast intelligence on par with humans, and are able to tap into some of the original Spirit Dragon's powers. Additionally, they also enjoy an extended lifespan and stand at the peak of elemental dragons, with enough power to approach demon lord class. They are hard to subdue even for the likes of Milim, which is why it's preferred to capture them while they are still Arch Dragons on the cusp of evolution, as it's easier to nurture them.

Main Types of Dragon Kings:
 * Earth Dragon King
 * Water Dragon King
 * Fire Dragon King
 * Wind Dragon King