|First appearance||Dec 2007|
|Height||117 cm (3'10")|
|Latest release||unknown (still maintained)|
ROM-DOS is a currently-maintained MS DOS-compatible OS designed for embedded systems.
ROM-DOS-tan is represented as a small girl with long purple hair and pinkish eyes. Her hair is tied into 5 ponytails (2 on each side, one in the back) and on her head she wears some metal bands which can be used to attach small devices. She wears a hi-tech monocle and a red and grey stylized school uniform with shorts and sneakers, and is the second-shortest DOS-tan.
She is feisty, courageous, hot-headed and not much of a socialite. Although by no means shy or introverted, she is often too deep in her technical work to worry about a social life.
Of the DOS-tans, she is one of the youngest, is the most physically-capable fighter and is aggressive enough to take on more powerful opponents, much to the chagrin of her sisters. ROM-DOS-tan has rivalries with the stronger and/or machine-wielding embedded OS-tans such as TRON-tan, eCOS-tan, QNX-tan and some of the Linuces. Although she is fast, has a lot of stamina and can control any electronic or mechanical device, she can only control one at a time, is clueless when they break down and is not very good at strategy. She often relies on PTS-DOS-tan and QDOS-tan to bail her out of these situations.
While she can put up a good fights, these face-offs often end up badly for her.