This is the OS-tan for Windows 98, for her OS-kun counterpart, see 98-kun and 98SE-kun.
|Common name:||Windows 98-tan|
|Also known as:||Hacchan, Memphis, 98 First Edition|
|Proposed human name(s):|
|Height:||*none officially listed|
|Hair color:||navy blue|
|Weapon of choice:|
|OS-tan Annex Project Faction:||Windows Family|
|System Personified:||Windows 98 (first edition)|
|Debut:||v.4.10.1998 (25 Jun 1998)|
|Latest Stable Release:||unknown|
This character represents the first edition of Windows 98. She is represented as a shy and small pre-teen girl with short navy blue hair with a clip shaped like 98, the Windows logo as part of a necktie and a schoolgirl outfit with a sleeveless white blouse, blue skirt, dark-colored shoes, long socks and gloves.
Two early designs that continue to be used alongside the 98 an 98SE-tans are a pair of stick-limbed snack-boxes with a face and version number drawn in crayon, based on the Vulcan 300 toy that appeared in the anime series Konjiki no Gash Bell!!/Zatch Bell!.
This is a holdover from the very early days before the designs of the primary OS-tans had settled. Generic stick-limbed boxes were often used as placeholders; there had been instances of small DOS and Windows 3.11 boxes before other designs gained popularity.
Both girls now make regular use of these as mechanical suits. The mech-box used by 98 is blue in colour, and likewise the 98SE mech-box has a green theme. The mechs are sometimes shown as guardians or friends to the 98-tans, otherwise the two girls can be seated inside them as pilots. The box sizes can vary, ranging from doll-like when carried by the girls to taller than an adult when they ride inside them. While usually used as toys or weapons, they can serve other purposes, such as a clubhouse, a shelter, or a place to hide. (The boxes also appear to be less stable than the girls themselves; When a non-DOS based OS-tan enters the box, it has a tendency to fall apart.)
In the comic that created 95 OSR 2.5-tan, 98-tan could be considered the main character. 95 OSR 2.5-tan sees her as a rival, but the rivalry isn't mutual, and 98-tan sees her as a well-meaning friend.