It seems IE have created an anime mascot for the browser called Inori Aizawa with her own Facebook page too:
Hey everyone! My name is Inori and you can think of me as a personification of Internet Explorer.
When I was younger, I used to be a clumsy, slow and awkward girl.
However, just like the story of ugly duckling, people told me that I have really matured and changed over the years. I feel confident in my abilities now, and I'm eager to show you what I can do.
Why don't you get to know me a little better?
They have an Inori version of IE for download here.