Me-tan is a personification of the Windows Me (Millennium Edition) operating system in the OS-tan series, a popular Japanese internet meme where various operating systems are depicted as anime girls. Me-tan is characterized as clumsy, hyperactive, and a bit unstable, reflecting the reputation of Windows Me for being unreliable and prone to errors. Despite her flaws, she is cheerful and optimistic, often trying her best to help others. She plays a comedic and endearing role among the other OS-tan characters.