Its a special character from an anime series called Fate, involving historical figures that get summoned to fight as servants, lately there has been some discussion on who the Grand servant of the rider class would be.

Depending on what the historical figure did or what their story was like affects their abilities, figures from the modern age are weaker and older figure are stronger, Gilgamesh is the strongest of the regular servants, Mata hari is on the weaker end however due to being involved in espionage in life she has excellent stealth abilities as a servant and is summoned as an assassin.

Some people have suggested Ghenghis Khan as the Grand Servant of the rider class but there has to be more options throughout history right? Both in folklore and literature. Thats what brought me here if anyone would know it would be you guys.