Auntie Dot is the artificial intelligence that aides Noble Team in Halo: Reach
This is my personal interpretation of her if she had a holographic form like Cortana.
Did this one for the Bungie All Star Week 1 Contest
Hope you like it!
(Yes, I was inspired by Gem from Tron.)
EDIT: Reduced Eye Shadow, refined face a little bit, added scan lines.
However, the image looks a little funny with the scan lines so I highly recommend you click the download button to get a full, crisp view of the picture.