Phantom Spirit

Phantom Spirits (幻霊, Genrei^?) are spirits that are unable to reach the level of Heroic Spirits, lacking the Saint Graph values necessary to ascend to that position.

Characteristics

Phantom Spirits are said to be "cast-offs," beings that were forgotten by history and are devoid of any faith. They are made up of urban legends, fairy tales, and extinct beasts. Described as fictions whose concepts will never manifest beyond the status of urban legends, they are beings that will "wither and disappear," failing to attain the ranks of Hero or Anti-Hero. Like Heroic Spirits, Phantom Spirits possess the capacity to hold Noble Phantasms based upon their legends. The same characteristics of some Noble Phantasms being weakened or strengthened upon becoming Noble Phantasms applies the same way to Phantoms, but they are always greatly weakened as a matter of course if one is summoned.

Due to their poor Saint Graphs, Phantom Spirits are beings of low strength, weaker than author Casters whose fame come from writing stories. Appearing as Shadow Servants, they would not be worth summoning in a Holy Grail War. Attempting to summon one as a Servant under normal conditions, they would be unable to manifest with a body, and, without a body, would be unable to function as a Servant. They at most will appear in the form of ghosts, or they can be placed in something like a doll body. They lack the capacity to hold much magical energy, no matter how much is supplied, so they can store a minute amount. They are unable to actualize their Noble Phantasms.

Phantom Spirits normally lack utility as Servants, but Baal's machinations in the Shinjuku Singularity lead to the ability to fuse them with Heroic Spirits and other Phantom Spirits. While said to be impossible outside the Singularity, utilizing data gained from it proves enough for Sion Eltnam Sokaris to summon Captain Nemo. Akin to a Mystic Code for a magus, Phantoms can be transplanted into Heroic Spirits to enhance their abilities. Through fusion and manifestation under a Servant's Saint Graph, the Noble Phantasms possessed by Phantom Spirits can be actualized, granting new abilities to the Servant.

Phantoms are similar beings to Wraiths, but the exact differences have not been explained.

Known Phantoms

Known Phantoms (most of whom made appearances within the Shinjuku Singularity) include:

• Der Freischütz: Fused to Moriarty. Bestows magic bullets and change to Archer class.
• Doppelgänger: Fused to Yan Qing in Shinjuku. Bestows ability to change appearance to disguise as others. The shapeshifting ability had allowed Yan Qing to even perfectly copy the Cursed arm Hassan's appearance, voice, demeanor, and even Shaytan's arm.
• Empusa: Fused into Huyan Zhuo.
• Hessian: Fused into Hessian Lobo.
• Lobo: Fused into Hessian Lobo.
• Dr. Jack Griffin: Fused to Hessian Lobo in Shinjuku. Bestows invisibility.
• Christine Daaé: Fused into enemy in Shinjuku. Wraith.
• King Lear: Fused into enemy in Shinjuku.
• Romeo and Juliet: Fused into enemy in Shinjuku.
• Macbeth: Fused into enemy in Shinjuku.
• Great Detectives: Fabricated by William Shakespeare and Hans Christian Andersen in Shinjuku. Fictitious. An entity of around 200 individuals that possesses a collective Noble Phantasm involving the "pronouncement of guilt", locking the target into the behavior of the revealed 'culprit' in detective stories.
• Paul Bunyan
• Sancho Panza: A fusion of various supporting characters from Don Quixote^WP. Summoned alongside Don Quixote.