Mash is a mysterious, kind-hearted girl. She refers to the Protagonist as her senior, however, behind that smile belies a deep sorrow and resolve that has accepted her fate as a person with a set life-span.
Mash is a Demi-Servant human fused with the Servant Galahad (One of Knights of the Round Table). She herself initially does not know the identity of the Servant fused with her.
Type-Moon Wikia
Servant class
Shielder
Birthday
July 25, 2000
Height
158 cm
Weight
46 kg