|Title:||Darkened Misty Metropolis|
|Owner:||Assassin of Black|
|Maximum number of targets:||50 people|
The Mist: Darkened Misty Metropolis (暗黒霧都, Za Misuto: Ankoku Kirito?) is a Bounded Field Noble Phantasm generated from an antique lantern that reenacts the phenomenon of the "Mist of Death". Upon opening the shutter and gently touching the candle inside, the lit flame instantly begins to generate smoke-like mist from the bottom of the lantern. The mist, wrought of prana, forms a Bounded Field around the area that has a negative effect on all those who enter within the perimiter. Normal humans will quickly faint from pain upon coming in contact with the dense cloud of enveloping smoke, as simply breathing it in burns the throat and direct contact with eyes causes them to fester. They start to suffocate due to being unable to breath, and they cannot see anything as they writhe in pain. She can easily use this time to selectively kill them, or she can simply wait for them to be inflicted with death within a few turns. Magi will not immediately perish, but they will receive continuous damage. Heroic Spirits will not receive damage, but they will have a Rank Down in Agility.
Jack is able to direct The Mist as she wishes in order to select which targets within the Bounded Field are affected, allowing her to leave a blank space around her Master. She is also able to limit it to only a specific area, allowing her to activate it just inside a building. The ability is continuously activated while she is under Mad Enhancement, and it will instantly target all entities possessing prana within range of the ability. It also affects the sense of direction of those within the field perimeter, making them lose their bearing of the area. Even within a familiar enclosed space, the mist deceives all those trying to escape into running around in circles in the same place without realizing it. Normal humans will always die in agony without ever being able to escape. The only means of escape for magi and Servants are the employment of Magecraft or a Rank B or higher in Instinct. The Mist quickly clears upon being deactivated.
The ability is not something gained only upon becoming a Heroic Spirit, but something similar to Magecraft that she used during life. Upon finding her victims, the mist would begin to thicken suddenly, and she could approach them without being noticed. They were only able to tell she was there when she spoke while standing directly before them. Similar to London's nickname of "The Old Smoke", The Mist is a recreation of the smog, the mixture of smoke and fog released during the burning of coal, that plagued the city countless times from the 19th to the 20th century because of conditions during the Industrial Revolution. The use of coal emitted large quantities of smog that eventually resulted in a crisis wherein a thick mist of sulfuric acid plagued the city in the 1950's. The worst of it was the Great Smog of 1952 where the mist covering London caused over ten thousand deaths.
 Fate/complete material IV: Extra material - Fate/Apocrypha - Jack the Ripper, p.326-327 English | Japanese
Jack the Ripper, Legendary Serial Killer
The perpetrator of a series of bizarre murders in 19th Century England. A young girl filled with contradictions, possessing properties of both day and night. Her personality is pure, but cruel at the same time. Though her manner of speech is innocent, she is quick of thought. She is rational, but is emotionally weak. She responds cruelly to others' ill will, but is soft against good will. And although she wears revealing clothing, she is shy, and doesn't go out during the day. She yearns strongly for a mother, and if her Master is female, she will insist on calling them "Mother".
- Class: Assassin (Berserker)
- Source: Historical fact
- Region: United Kingdom
- Alignment: Chaotic Evil
- Sex: Female
- Height: 150cm
- Weight: 45kg
- Armament: Knives, Black Mist
Illustrations: Sanada Taketo
Creator: Yuichiro Higashide
- STR: C
- CON: C
- AGI: A
- MGI: C
- LCK: E
- Noble Phantasm: C
- Misty Night Murderer - Rank A:
As a murderer rather than an assassin, she can strike before her victim. However, she can only unconditionally take the first strike at night. During the day, a luck roll is required. Jack the Ripper's victims are believed to have all been attacked while off-guard.
- Information Erasure - Rank B:
At the instant a battle ends, her abilities, true name, appearance, and other information disappear from witnesses' and enemies' memories/records, even if the battle took place in broad daylight, or was recorded on a device such as a camera. To counter this, one must deduce her identity from evidence left at the scene.
- Mental Pollution - Rank C:
Has a moderate chance of blocking mental interference-type magecraft. If her Master has an evil alignment, or is cruel to her, this mental pollution gradually rises. Her chances of blocking magecraft will increase, but her already broken spirit will begin to irreversibly corrupt.
- Surgical Operation - Rank E:
Can heal her Master or herself using a blood-stained scalpel. It looks risky, but she manages somehow. The techniques are from 120 years in the past, but are improved a little with mana. Jack the Ripper killed victims in ways that would require anatomical knowledge, such as removal of specific organs.
- Presence Concealment - Rank A+:
A skill that suppresses presence as a Servant, suitable for covert action. If presence were fully suppressed, she would be nearly impossible to detect. However, when prepared to attack, Presence Concealment's rank falls substantially. This weakness is compensated for with "Misty Night Murderer", allowing for a perfect surprise attack.
- Mad Enhancement - Rank C:
If summoned as a Berserker, she gains this skill. Increases all parameters in rank with the exception of Luck and Mana, but removes the ability to speak or have complex thoughts. As a Berserker, she is only active at night, with "Darkened Misty Metropolis" always active, and will attack anything that possesses mana.
- Maria the Ripper: The Holy Mother of Dismemberment
Normally four D-rank knives, but under certain conditions, they are boosted by the grudge of "the 80 thousand children in London's slums, abandoned by prostitute mothers for the sake of their livelihoods, unable to even become prostitutes", with brutal results. There are three conditions. "It is night-time", "the target is a woman (or female)", and "it is misty". When all the conditions are fulfilled and the Noble Phantasm is activated, the target's innards are forced out of their body, and they become a dismembered corpse. When the conditions are not met, it is limited to simple damage, but increases in power with each condition that is fulfilled. As the Noble Phantasm is not an attack from a knife but rather a variety of curse, it can be used at long range. To defend against this Noble Phantasm, resistance against curses is required, rather than physical defence.
- The Mist: Darkened Misty Metropolis
A Noble Phantasm that creates a mist-filled barrier. The mist itself, created with mana, is the Noble Phantasm. Although it is a means of keeping people out, a non-magus trapped inside the barrier will die after a few turns. A magus will not die immediately, but will take continuous damage. A Heroic Spirit will not take damage, but their Speed will decrease by one rank. The user of the Noble Phantasm is able to choose who is or is not affected by the fog. As those trapped in the fog lose their sense of direction, an "Instinct" skill ranked B or higher or some kind of magecraft is necessary to escape. The large quantity of soot emitted from the Industrial Revolution onward became a smog of sulphuric acid that caused disaster to London in the 1950s. "Darkened Misty Metropolis" is a Noble Phantasm that reproduces that "mist of death".
- Class: Assassin (Berserker)