Flat Escardos (フラット・エスカルドス, Furatto Esukarudosu) is the "False" Master of False Berserker in the True and False Holy Grail Wars of Fate/strange Fake. He is a student of the El-Melloi Classroom under the Department of Modern Magecraft Theory in the Clock Tower.

Flat is a prodigy in terms of his ability in magecraft, but he lacks the intelligence and commonsense to properly utilize it. He is whimsical in nature and the only trait he actually displays as a magus is intuition that differs from that of ordinary people, described as a "superabundance of curiosity" if phrased in a kind manner, though it does not follow through to his regular deductions. He has a very loose grasp on topics like history, planning, basic logic, and strategy, and only the word imbecile can truly sum up his character in one word. He is extremely frank with his comments, lacking any sort of decorum with his words. He does not react to insults in any manner, not even realizing their implication.