XP-tan is a fun case.
The initial design idea is that she is only good for eyecandy, not as clumsy as Me-tan, but her main character traits were very much just having comically oversized boobs and being gluttonous to represent the higher system requirements compared to 9x and 2000.
But because XP ended up being considered one of the highlights in Microsoft's history, especially if you were sticking with it when Vista and 7 came out, then you can notice at a certain point her portrayal becomes much more benign and modest, and she got several of those pictures/comics where she's sad to go or even about to die.