Sick

Sick (シック) is the UMA that embodies sickness. It is also known as the "Tenth Master Rule UMA". They serve as the main antagonist of the Sick Arc.

Appearance
Sick takes on the appearance of a human with a slender but tall and fit build. Being the Tenth Master Rule, Sick has an X on their chest signifying their ranking within the Master Rules. They wear long pants with zippers running down each pant leg and have belts around them. Sick as well has a head of long black hair that reaches down to their hips and their face is absent of eyebrows.