This list of mythical creatures that begin with this letter and I am constantly gathering information from each continent, and is continually being updated.
Kui (Chinese)
Separate figures in Chinese mythology, one a one-legged monster, another a legendary minister credited with the invention of music or some kinds of music. A creature seen in the decoration of Chinese bronzes from the Shang dynasty, which became a popular motif on archaistic wares in a variety of media. The dragon, which has a turned-up snout, is always shown in profile with only one leg visible.
Going back into ancient Chinese mythology the Kui was indeed a one legged beast similar to a dragon but with a human face and the body of a dragon, living on Mt. Liubo in the Eastern Sea. Its skin was used by the Yellow Emperor to make a drum to invoke rain and wind. Kui is therefore seen as identical to the thunder gods.