Ke Vista, known as Vista-ke in the OS-tan series, is the anthropomorphized representation of the Windows Vista operating system. She is depicted as an elegant and stylish young woman, often wearing a long dark dress and exuding a futuristic charm. In the OS-tan universe, her personality highlights both the strengths and flaws of Windows Vista, including her ambition and occasional struggles with compatibility. Ke Vista serves as a bridge between older and newer OS-tans, symbolizing technological transition and innovation.