The unnamed mantle of Perseus is one of the five Noble Phantasms granted to him by the Greek gods for the purpose of slaying Medusa. Said to be a helmet that grants invisibility in the legend, it is a mantle that allows for him to change appearance at will.[1][2] While fighting as a Servant, he uses it to hide his true form along with his mask.[3] In the world of Fate/kaleid liner PRISMA☆ILLYA, there exists Hades's Cap of Invisibility in the Gate of Babylon that may be either the same or a related Noble Phantasm.


  1. Fate/hollow ataraxia - Mirror of Kibisis
  2. Prototype material - p.41

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