Mumps Virus

 is a character in the Cells at Work!

Appearance
In the manga, Mumps has dark hair, small circular eyebrows, narrowed eyes, big puffy semi-dark cheeks, and thick lips. They wear a light color shirt.

In the anime, Mumps has black hair, normal eyebrows, narrowed yellow eyes, puffed light teal cheeks, thick lips and green skin (except in the face where it is white). They wear a normal cell shirt.