Gumball Zach Tristopher Watterson is a twelve-year-old blue male cat and a main hero of the popular animated series called The Amazing World of Gumball. Gumball is a very imaginitive person that is often seen publicly expressing his emotions like happiness. Gumball often shows cynicism towards society itself but he is pretty optimistic and a very positive blue cat character. Gumball is also has a very sarcastic nature and he is quick to defuse all sorts of quips towards others. He is also a very energetic person who despite his mediocre academic performance can be surprisingly brilliant. A fanart The Amazing World of Gumball progress bar for YouTube with Gumball Happy Run.