Shima Shimako is a zebra character who walks upright. As a prominent showbiz idol in Ani-yoko, she works as a model, actress, singer, and dancer. Her celebrity status draws widespread admiration from Ani-yoko's female residents. Accompanying her fame is a characteristically bratty and self-centered attitude.

She habitually interferes with others' fashion choices, attempting to "fix" perceived style mistakes. These interventions consistently backfire, worsening the situations she targets. Mr. Yamanami, a horse character and leader in Ani-yoko, exhibits a consuming obsession with her. He repeatedly pursues dates with her, often neglecting or shutting down his business operations in extreme efforts to gain her attention.