A heroine of Fate/stay night introduced in Fate/unpublished material and Shielder-class Servant of Ernest Gravehill.
Known as the Stray Servant (はぐれ サーヴァント), she was a heroine candidate during the development of Fate/stay night who was left unused in the final version. She was considered along with Rider and Caster to be a possible heroine, but she was cut due to the plot beginning to stray so as to keep it manageable for the player. As Saber is a "Servant of the Sword", she was to be her rival as a Shielder, "Servant of the Shield."
The design was later revived for Fate/Grand Order in 2015 for Kinoko Nasu to allow her to be one of the main heroines along with Saber and Ruler, thus becoming Mash Kyrielight.
