Name: Assassin (Sasaki Kojiro)

Gender: Male

Age: Unknown (indeterminable)

Species: Human... or the manifestation of several legends, stories and myths into a human. 

Appearance: [hider=Assassin] [img=http://static1.wikia.nocookie.net/__cb20130807120932/typemoon/images/thumb/e/ed/Sasaki_sprite.png/180px-Sasaki_sprite.png][/hider]

Origin Fate/Stay Night

Personality: The swordsman who is referred to as Sasaki Kojiro is calm and follows bushido, the way of the warrior. He also doesn't really care for any ambition nor personal goal, only seeking a good spar with other warriors. 

Short bio: Sasaki Kojiro is the manifestation of several legends and myths into a human being, and it is because of that he does not truly exist as a normal person would - he is best described as a manifestation of various data of the world set to match the parameters that best describes what people believe Sasaki Kojiro to be. He wields the sword 物干し竿　(Monohoshi Zao, the "Laundry-Drying pole") which is realistically much too long for anyone other than him to use, and that's only because he had several centuries of supposed "death" after his legend to use it. Sasaki/Assassin is best known for his mysterious sword technique, 燕返し(Tsubame Gaeshi, "Swallow-Reversal") he describes as only really fast swings but is in reality three simultaneous swings that defy the very laws of reality which come from three directions, cutting off the opponent's path of escape. There is no way to avoid Tsubame Gaeshi - the only way to counter it is to not allow him to use it. The downside to that technique is that Assassin must be on flat ground to use the technique; any attempts to do so on an uneven surface will cause him to lose his balance and only let off two avoidable slashes instead of the normal three.