MSDOS
From OS-Tan Collections Wiki
MS-DOS
A rarer character, MS-DOS is a cute but very shy little girl carrying around a keyboard and usually peeking around corners. The implication is that, like MS-DOS itself on non-NT versions of Windows, she is always lurking somewhere in the background, just out of sight.
MSX-DOS
A rarer character, MSX-DOS is another variation on MS-DOS. She represents the Microsoft Japan version of DOS, MSX-DOS. She is rarely seen but remains to be included in recent images.
DOS/V
DOS/V is a variant of PC-DOS designed with Japanese language support. She is about the same size as MS-DOS but has long grey or grey-blue hair and a dark bodysuit. She is also a lot less shy.
See also: