This is a remaster of C-chan's third chibi set, taking full advantage of the SVG source file containing the complete artwork. Apart from fixing some earlier glaring defects (such as OS/2-tan's head position), updating her uniform to what would later become her established look (although her hair remains tied in this picture), and modernizing key features such as their eyes and mouths. A quick background was also added to break the monotony of his chibi sets and the Japanese labels imported into Inkscape.

OS/2 Warp-tan's uniform is inspired from the Star Trek movies for very obvious reasons known surely to most OS/2 users. The phaser in her hand is also from the same reference. She was a happy member of the original IBM-Microsoft family, until the separation saw the disbursement of her original family members, and the targeting of her as an enemy from the new generation of Windows-tans. She has since developed a strong vendetta towards the Windows Family and still works to overthrow it despite being virtually abandoned by her remaining parent company IBM.

RISC OS-tan wears more cosmopolitan attire, and is holding a British-manufactured Webley Mk VI Revolver. She is actually an indestructible character, but being obsessively prim and proper in her attire often interferes with her physical invincibility. She often follows OS/2-tan more as a friend looking out for another, rather than as an ideological foe of Microsoft (whom she could really care less about).