Hello Kitty, known fully as Kitty White, is the cheerful, kind, and optimistic director of a theater company. She oversees all productions while frequently starring as protagonists—princesses, heroines, or supportive fairy characters—in their adapted stories. Beyond performing, she organizes the theater’s operations and compassionately assists fellow performers, especially timid friends like My Melody during challenging roles.

Her visual design retains the classic white cat appearance with a red bow, uniquely featuring a visible mouth in this adaptation. Family members Mama, Papa, Grandma, and Grandpa regularly appear in motherly, fatherly, or supporting roles within their staged tales. Residing in a London suburb with her family, this setting excludes her twin sister Mimmy.

A notable dynamic exists with Catnip, a green Siamese cat portraying antagonists; their relationship mixes friendly sociability with underlying envy or rivalry, absent overt hostility. While later media introduces romantic ties to Dear Daniel, this series highlights her professional partnership and occasional on-stage romantic pairings with Tuxedo Sam, a penguin serving as both stage helper and co-lead.