Assassin-class servant from [[Fate/Prototype: Fragments of Blue and Silver]]. She generally wears a [[black leotard]] with a [[center opening]], some [[fingerless gloves]], and a pair of [[leggings]]. Her later ascensions come with a [[hairband]] and a loose-fitting [[belt]].

[b]True Name:[/b] Hassan-i-Sabbah, specifically Hassan of Serenity

h4.Costumes

* [[hassan of serenity (lostroom outfit) (fate)|Lostroom Outfit]]
* [[Hassan Of Serenity (merry Sheep) (fate)|Merry Sheep]]
静謐のハサン アサシン(フラグメンツ) assassin_(fate/prototype_fragments)