Jane (Ender's Game)
In Orson Scott Card's Ender series, Jane is an artificial sentience thought to exist within the ansible network by which spaceships and planets communicate in realtime across galactic distances. She has appeared in the novels Speaker for the Dead, Xenocide, and Children of the Mind, and in a short story The Investment Counselor. Her 'face', a computer generated hologram that she uses to talk to Ender, is described as plain and young, and it is illustrated in First Meetings as having a bun.
It is believed she was first formed while Ender played the Fantasy Game in Battle School (it is also quite openly hinted by The Hive Queen in Xenocide that she was created with the aid of The Buggers so that they could reach through to Ender Wiggin). As revealed in Shadow of the Giant, Bean helps bring Jane to her current prowess.
Jane's presence was kept secret until the end of Xenocide, when she is discovered. Starways Congress tries to kill her by shutting off all of the ansibles at once, but ultimately fails.
In the last two Ender Books, she takes a human body, and falls in love with Ender Wiggin's stepson Miro.