Assassin (Fate/kaleid liner PRISMA☆ILLYA - Illya)

The Assassin (アサシン) Class Card of the Sixth Ainsworth Holy Grail War was one of eight Class Cards transported to Illya's world in Fate/kaleid liner PRISMA☆ILLYA.

Identity
The True Name of the Heroic Spirit of the Class Card is The Hundred-Faced Hassan.

Appearance
Upon manifesting, the bodies of the The Hundred-Faced Hassan are similar to their normal appearance, but feature cracked masks with single eyes.

Role
The Assassin Class Card is found in the Fuyuki Forest. The Assassins quickly overwhelm Illya, Miyu Edelfelt, Rin Tohsaka, and Luviagelita Edelfelt. Illya is poisoned, and at the brink of death, she unknowningly released her mana in a massive explosion that manages to defeat the Assassin Class Card while also putting her compainions in danger.

Illya later Includes it while fighting Gilgamesh and Installs it while fighting Angelica.

Heroic Spirit
The manifested card reproduces the Zabaniya: Delusional Illusion Noble Phantasm, manifesting numerous individual who throw dirks at the opponent. Compared to normal, the maximum number is greatly decreased.

User
Including the Assassin Class Card allows for the Mystic Code, Magical Ruby in the case of Illyasviel von Einzbern, to become a decoy n the exact image of the user. The user will be concealed for a few seconds, but will be revealed after the decoy is destroyed. Although the decoy takes damage, the item used to transform remain intact after returning to its normal form.

Installing the Assassin Class Card gives the user a version of Assassin's garb, grants use of their daggers, and transforms the Kaleidostick into one of Assassin's skull masks. Once clad like this, the user can still make use of the duplicates with Zabaniya, but also gains the ability of Assassin's Presence Concealment.

Development
"A person well-versed retorted with "hey, isn't this the 4th one?" at the numerous excuses I had the pleasure of making up, yup, that's why. I want to see the Ilya who pulls out opponent's hearts with her right hand as well."

- Hiroshi Hiroyama

The Hundred-Faced Hassan is not the Assassin of the Fifth Holy Grail War, Sasaki Kojirou or Hassan of the Cursed Arm, that would normally have appeared to mirror ''Fate/stay night.