Gumball has the personality of a twelve-year-old boy. He is a fun-lover and a troublemaker. When his mishaps get himself into a mess, he usually attempts to put them right with somewhat stupid schemes, which usually get him into more trouble. No matter how his schemes turn out, his unbound optimism stops him from learning important lessons in life. In the episode "The DVD", it was revealed that Gumball is allergic to Make-up, which plumped up his whole face and making enough money to return the DVD. In the Episode "The Laziest", it was revealed Gumball does not like stories about the summer of 1983.