ジークフリート, Dragon-Blooded Knight, Saber of Black, Kuro no Saber, 黒のセイバー
Siegfried is the hero portrayed as the main character of the German Nibelungenlied epic. Prince of the Netherlands he wields the precious sword Balmung which he received from the Nibelungen family and has fought in many campaigns and adventures. His most wellknown feat is killing the evil dragon Fafnir. He then bathed in the blood of the dragon and has obtained an invincible body. In Fate/Apocrypha Source: TypeMoon Wiki