“Have I become a little more like a Servant?”

Mash Kyrielight, A Demi-Servant human fused with the Heroic Spirit Galahad. She herself initially does not know the identity of the Servant fused with her. In the year 2000, Mash was created from artificial fertilization and genetic editing. She is actually a Designer Baby, a magus genetically engineered under the orders of Chaldea's late director, Marisbury Animusphere, to be a prime vessel for a Heroic Spirit's soul. The project aimed to control the powers of Heroic Spirits by binding them to a compatible mortal vessel in order to produce Demi-Servants.