Winifred Burkle, commonly referred to as simply Fred, is a librarian that was unknowingly made privy to the world of demons when she was transported into a demon world while shelving books. Fred has many talents, including being incredibly intelligent and wise. She is also one of the primary reasons why the world was saved from Jasmine's anti-apocalyspe. In the fifth season, Fred begins to examine a sarcophagus brought into the Wolfram & Hart laboratory, and is possessed by the ancient goddess Illyria. Amy Acker portrays Fred and later also portrays Illyria.
- 5x15 - A Hole in the World: Fred gets extremely sick, prompting Angel and Spike to search for a cure in the Deeper Well. They find out that Fred has been possessed by one of the Old Ones, and that there is no cure on stopping her. At the end of the episode, Fred is completely taken over by the deity Illyria.
- 5x20 - The Girl in Question: Fred's parents come to visit Wolfram & Hart from their home in Texas, not knowing of Fred's recent death. Illyria shapeshifts into Fred and her parents leave happily, still not knowing the truth.
- Flash Back: Although Fred dies in A Hole in the World, Illyria shapeshifts back into the physical form of Fred in two episodes, The Girl in Question and Not Fade Away. The first comes when Fred's parents come to visit Wolfram & Hart, not knowing that their daughter has died. The second comes when Wesley is mortally wounded and Illyria grants his wish of Fred being one of the last things he sees before he dies.