The "Fate/Unpublished Material" and "Fate/Side Material" booklets reveal an unused character for Fate/Stay Night. "Tachie", otherwise known as "Galahad", "Shielder", or "Stray Servant" was planned as an alternate Heroine Servant the player could have chosen instead of Saber. She was scrapped from the game as to keep the story manageable.

This character was also planned for the animated adaptation of Fate/Stay Night by Studio Deen, but was scrapped in favor of an adaptation of the "Fate" Route. An animated movie featuring Tachie was also considered, but also abandoned.

This unused character was later revisited and inspired the design for Mash Kyrielight, a seperate Shielder Servant and primary heroine of Fate/Grand Order.