Mash Kyrielight is a pivotal character in the Fate/Grand Order series. She is a Demi-Servant, combining human and Heroic Spirit attributes, specifically merging with the spirit of Galahad. As a member of Chaldea Security Organization, her primary role is to assist the protagonist in the mission to resolve Singularities and restore human history. Known for her stoic yet kind personality, Mash wields the formidable shield Noble Phantasm, Lord Camelot, which symbolizes her determination and protective nature. Her journey involves growth from an uncertain novice to a brave and loyal companion.