Serpent [Colloquial term]
Roa's nickname. The Dead Apostles gave it to him, in reference to the way he lives on through reincarnation. Given that he dabbled in alchemy, it's quite fitting.
Of course, when you hear alchemy the first thing you think of is Sion, but Sion is an Atlas alchemist, which is something totally different from those alchemists that devoted themselves to Western sorcery. It seems that the Atlas alchemists don't think much of Roa for that very reason, even though they both subscribe to the common idea that "everything flows". Also, contrary to what you may expect, Sion too is possessed of this same elitism, and looks down on Roa on principle.
…Huh? Then are Sion and Ciel actually on bad terms…?

The Atlas Academy [Place name]
The institute Sion belonged to, and one of the three major branches of the Association. Located in the Atlas mountains of Egypt, it is a place where those dedicated to the study of alchemy gather. Colloquially known as the Giant's Pit.
Unlike the modern alchemy that rose to prominence in the middle ages, the alchemy studied by Atlas could be said to be the progenitor of sorcery. For some reason they are on extraordinarily bad terms with the Prague Association, and even the Clock Tower, the very heart of the Association, keeps their distance.
In order to avoid the "end" proven by their first director, they endlessly create and dispose of weapon after weapon.
There is a saying in the Prague Association: "Lift not the seal of Atlas, lest ye destroy the world seven times over."
…The reason being that the weapons created there to save the world are ultimately nothing more than tools that will further its destruction.

Atlas Institute [Place name]
One of the three major branches of the Association. Located in the Atlas mountains of Egypt, it is a place where those dedicated to the study of alchemy gather.
Unlike the modern alchemy that rose to prominence in the middle ages, the alchemy studied by Atlas could be said to be the progenitor of magecraft, and an attempt to unravel the truth of the world.
For some reason they are on extraordinarily bad terms with the Prague Association, and even the Clock Tower, the very heart of the Association, keeps their distance. They are colloquially known as the Giant’s Pit.
In order to avoid the “end” proven by their first director, they endlessly create and dispose of weapon after weapon.
There is a saying in the Prague Association: “Lift not the seal of Atlas, lest ye destroy the world seven times over.”
…The reason being that the weapons created there to save the world are ultimately nothing more than tools that will further its destruction.
Though calling it “one of the three major branches of the Association” sounds nice, in reality it is more like an independent think tank. They have been known, on rare occasions, to loan out their alchemists to other mage’s associations and even the Holy Church upon request.
In order to hire an Atlas alchemist, however, one of the written contracts issued by the Atlas Institute is required. Only seven of these contracts were ever issued, and the Atlas Institute considers their recovery a top priority.

The Academy at Atlas【Location Name】
The Atlas Institute is an association of magus and alchemists based somewhere in Egypt’s Atlas Mountains. It is also known as the Giant’s Pit.
Of the three divisions of what had once been the Mage’s Association, the institute of accumulation and measurement.
They were a group of practitioners of alchemy, not of the modern alchemy that became dominant since the medieval times, but the progenitor of magecraft, the alchemy that investigates the truth of the world.
They’re not so much as mages as they are individuals with abnormal powers who treat their own bodies like humanoid machines, using them like vessels for working their minds more accurately, more powerfully, more quickly.
They believed that humans are a rare sort of computers with motor functions (the five senses), that we humans are intelligent lifeforms that evolved to collect and analyze information and directly solve the problems created from that as manual labor.
The correctness of this idea was proven unexpectedly in the world of Extra where magecraft died out.
The alchemists of Atlas have poor magic circuits, and did not lead their lives relying on magic power.
As they did not rely on it (or to be more precise, could not), they were able to continue their pursuit of knowledge as disciples of magecraft even after the depletion of mana.
However, for a long time children had stopped being born, and the Atlas Institute, with its old alchemists taking their lives, was at the end of its ropes irrespective of the mana depletion.
All that remains of the Atlas Institute is a single homunculus. The last Atlasian succumbed to disease after creating the homunculus, and only her creations were left in her cave.
The Atlas alchemists disappeared, and their research facilities which were built using unknown techniques stretch out in an underground city which is now, more or less, a giant graveyard.

Frankenstein, Frankenstein's Monster
Frankenstein, Frankenstein's Monster is the cyborg that appears in Mary Shelley's novel. Normally slow to respond in interpersonal interaction, she exhibits surprising agility and toughness in combat; in Berserk Mode, she executes commands with extreme faithfulness. Due to a lack of skill in expression, and fearful of her own monstrous nature, she maintains a shy silence that conceals her high intelligence and empathetic capabilities (except for the emotion of sorrow). Extremely mindful of energy conservation; if her Master leaves the lights on in the bathroom after use, she will turn it off for him.

• Class：Berserker
  
• Source：Novel "Frankenstein: or The Modern Prometheus"
  
• Location：Europe and the United States,
  
• Alignment：Chaotic Neutral
  
• Gender：Female
  
• Height：170cm
  
• Weight：40kg
  
• Armament: Mace
  

Illustrations: Takeshi Okazaki
Creator: Meteor Hoshizora (TYPE-MOON)

Legend
An artificial lifeform created by the researcher Frankenstein; she was rejected by her creator when she professed a love for him. Fearful of her interests, her creator dismembered her and escaped to his birthplace in an Alpine village outside Geneva. Reassembling herself and tracking him on instinct, she began to recognize over time that though she was kind in nature, she was also an existence of cursed monstrosity. The understanding of the reasoning behind her creator's rejection drove her to anger and despair, and she took the lives of his family members, pursuing him across Europe in the aftermath. Her creator eventually underwent a mental breakdown and took his own life. At the loss of the subject of her love, hopes, and hatred, the automaton drowned herself in the icy waters of the Arctic.

Status

• STR: C
  
• CON: B
  
• AGI: D
  
• MGI: D
  
• LCK: B
  
• Noble Phantasm: C
  

Skills

• Scream of the False Lifeform (Scream of Terror)
  

The Servant is capable of emitting an immense scream, temporarily robbing enemies and allies alike of their ability to think and respond; those who do not expect it or are incapable of the mental resilience to withstand it may temporarily lose their ability to breathe. The effectiveness of the skill is increased with activation of Mad Enhancement. Incidentally, in Berserk Mode, the Servant expresses approval with the phrase "Yaaa," and disapproval with the phrase "Uiii," but it is impossible to discern anything but madness.

• Galvanism
  

Unrestricted conversion and accumulation of magical energy and bio-electric energy. Thaumaturgical attacks involving no material existence -- wind manipulation, energy bullets, beam attacks -- are converted to electricity and rendered without effect, discharged into the environment. Absorbed electricity may be used to implement rapid self-repair and physical attribute reinforcement. Like Phlogiston^WP and Ether, the concept of Galvinism, which explains organic activity as a bio-electric process, falls under the domain of Alchemy.

Noble Phantasm

• Bridal Chest: A Maiden's Chastity Strength: Medium
  

A large mace used by the Servant as a striking weapon, which gives off discharges electricity with the appearance of tree branches. In reality, the Servant's reactor core / heart is contained within the large spherical bulb, and the fin on the opposite end remotely transfers energy to the Servant's main body. With high efficiency, the implement continuously gathers energy wasted by the Servant or present in her surroundings, and is constantly manifested outside of combat to power her. If exposed to a high-magical energy environment -- for example, in the midst of combat -- the function of Galvinism and the Bridal Chest combine to qualify the Noble Phantasm as a "Type II Perpetual Motion Engine."

• Blasted Tree: The Lightning Tree of Crucifixion Strength: Large
  

Use of the Bridal Chest in a suicide move -- the fin of the mace is planted into the ground, and the reactor's limiters are completely released, discharging all gathered electricity into the surrounding environment as an area of effect attack with target homing; momentarily giving the Noble Phantasm in the silhouette of a towering tree. May be implemented from the Servant's own body rather than the Bridal Chest if the enemy force is a single opponent within short range. Use of this technique results in permanent deactivation, but there is a low probability that a second Frankenstein's Monster will be materialized in the wake of the attack. However, in death, it would be impossible for the Servant to witness the results of her actions.

Family lineage of Magus
A magus lineage refers to the Magic Crest relay that passes down a Magic Crest through unilineal succession. Because this “relay” is so important, even if a family’s biological lineage has ceased, the magus lineage will be considered continuous if the crest is engraved onto somebody else’s body. Conversely, if the Magic Crest itself is lost, that magus lineage will be considered to have been severed even if a child with Magic Circuits still lives. Under normal circumstances, a magus selects the best qualified heir from within the family, and gradually passes on the Magic Crest to the successor.
The chosen successor to a magus lineage undergoes harsh training from a young age. Because an abnormal mindset and body are required to use magic, the training to instill these qualities is extremely severe, and it is not unusual to employ inhumane measures such as brainwashing and bodily modification. Thus, as the heir matures he or she inherits the lineage’s magic, knowledge, and research. Finally, a new master is born when the entirety of the Magic Crest is passed down from the predecessor.

Increasing the number of Magic Circuits
Magic Circuits are organs that one is born with, so there is no way to increase their number after birth. There are ways to transfer circuits, but it is rarely done because the success rate is low. Therefore, magus lineages will modify the parents’ bodies or take every measure possible at the moment of a child’s birth to create a successor with even one additional Magic Circuit. Therefore, the children of older lineages tend to have more Magic Circuits.

Inherited Magic Crests
Magic Crests are heirlooms within which the entirety of a lineage’s research is inscribed, from the first ancestor to the present. The crest contains the regrets of previous family heads’ inability to master their magic. A Magic Crest with a long history is a cursed crystallization impregnated with the feelings of countless preceding magi.

The Tohsaka family
Rin is the heir to the Tohsaka family, while Sakura was adopted by the Matou family as a successor. Because Tohsaka Tokiomi, the family head, died in the Holy Grail War, Rin inherited Tokiomi’s estate, including his magical patents, businesses in Fuyuki, and other assets. However, at this point most of Tokiomi’s magic crest had not yet been transferred to Rin. Tokiomi’s crest was extracted from his body by the Clock Tower, and given to Tokiomi’s next of kin to be transplanted into Rin.

Great magical families

shape ist Leben [Magecraft]
Manipulation and transmutation of matter. Magecraft handed down in the Einzbern family to shape precious metals. Irisviel uses it when fighting Kirei. By passing magical energy through wires it is used to transmute a giant wiremesh falcon as a makeshift homunculus.

Atlas Institute [Organization]
Commonly nicknamed “The Titan’s Cellar.”
An association of alchemists located in the Atlas Mountains, Egypt. The institute of aggregation and measurement.
They were originally one of the three major divisions of the Mage’s Association, but they are less a group of mages and more a group of superpowered individuals who treat their bodies as man-machines.
A self-destructive foundation that continuously builds weapons capable of ruining mankind in order to prevent the ruin of mankind. Their only precept is not to reveal the results of your research to individuals other than yourself.
However, as mentioned in-story, any method capable of preventing the ruin of mankind has a high likelihood of also being capable of causing it. That is a fundamental problem with the Atlas Institute and all its personnel, and much like their Mage’s Association colleagues from the Clock Tower with their inability to reach the Root being caused by their attempts to, they are also burdened with a hopeless karma.
Needless to say, the Black Barrel, the Logos React, the rest of Seven Superweapons, and their related inventions all share this same nature.
On another topic, unlike the people of the Clock Tower, the alchemists affiliated with Atlas have little to no Magic Circuits. However, one group of families called The Six Sources of Atlas possess special cells that produce magical energy that functions only within their bodies. These abilities called Traditional Features are mere checkpoints toward Atlas’s goal but the families internally develop them in order to awaken the abilities of their bodies. The Etherlight of the Eltnam family, for example, was initially developed as pseudo-nerves for medical purposes and eventually reached the point where people can use them without necessarily being an Eltnam, although with some functions restricted (it’s still a fact that only the family can use it to its true potential). Additionally, Sion Eltnam Sokaris has a power named Transparent Body, but you’ll have to read the story to understand just how compatible with Etherlight that makes her.
Oh, “why do only the members of the Six Sources have these cells?”, you ask? See, the Atlas Institute began with…

Sion [Person's name]
Full name, Sion Eltnam Atlasia. An alchemist from the Atlas Institute, one of the three great branches of the Association.
Melty Blood's guest heroine. Her trademarks are her purple uniform and long braid, and her weapons are Etherlite (a nano-scale filament) and the Barrel Replica (an imitation of the "Black Barrel").
Though she hails from the disgraced Eltnam family, she excelled within the Atlas Institute, and was even awarded with the name Atlasia, which marks her as the Institute's next director. However, she had long harbored doubts about her situation, and was troubled by the fact that she didn't know what the problem was.
As a result, when the Church petitioned Atlas for help with a vampire hunt, the angst-filled Sion volunteered her services. She confronted the Tatari, one of the 27 Dead Apostle Ancestors, and was ultimately defeated. Afterward, while suppressing her own now-vampire body, she evaded pursuit from both the Church and the Association and tried to challenge the Tatari one more time, but…
Her personality is totally serious and logical, and having fun doesn't come naturally to her at all. However, that doesn't mean she's incapable of it. Perhaps it's more accurate to say she's a chairman-of-the-committee type, who really does want to have fun deep down.
Though Melty Blood diverges into various routes depending on the outcome of each fight, in the majority of the endings Sion leaves town having awakened to faint feelings of love – her first love, in fact. Sadly, it was cut short before it even began.
An oddity among the Tsukihime heroines (who are, by and large, always at each other's throats), she is capable of getting along with everybody, in her own way.
Her initial design concept was "an alchemist and a soldier", which should be obvious just from seeing her in action. Her energetic movements are very fitting.
By the way, her miniskirt is so short you almost can't even see it at all. If I'm not mistaken, this is what they call the "absolute territory", yes?

Sion Eltnam Atlasia [Person's name]
An Atlas Alchemist who came to Misaki in order to put an end to the Tatari.
Her weapons are Etherlite (a nano-scale filament) and the Barrel Replica (an imitation of the "Black Barrel").
Even within Atlas, she is one of the most promising up and coming alchemists, and the name Atlasia marks her as the Institute's next director.
She participated in the battle against the Tatari three years ago, but was defeated. Though she was the sole survivor, afterward she began pursuing the Tatari on her own without returning to either Atlas or the Church.
She has an overly serious and inflexible personality, but deep down she's a warmhearted genius scholar. Among the constantly feuding Tsukihime heroines, she's a rare type capable of getting along with everybody.

Etherlite [Term]
The nanofilament wire wielded by Sion.
Although it's used like a whip in the game, it's actually designed to attach to the opponent's skin, integrate with their central nervous system, and read their thoughts and memories. It is because of this technique that the name Eltnam has become synonymous with spiritual hacking.
Though the thought-reading function seems vile enough, its ability to "merge with and copy memories and experiences" is actually even more dangerous. This inhumane and demonic "acquisition of another's life", which even the Atlas Institute shuns, is a technique unique to the Eltnam family.

Sion Eltnam Atlasia
Her former name was Sion Eltnam Sokaris. She is the heroine of Melty Blood. She is an alchemist of Atlas, and expertly uses her etherlite filament to freely read the thoughts of others. Despite being an alchemist she possesses envious level of physical prowess, which rivals or surpasses that of a Dead Apostle. When led astray by TATARI (Night of Wallachia) in the past, she was saved by Riesbyfe Stridberg. She says that she is conducting research on how to return Dead Apostles to being human, but…

Ouji Misaya [Person's name]
A girl in her late teens. A faerie-user.
She was a student of the Reien Girl's Academy, and an upperclassman of Kokutou Azaka.
Misaya was a talented girl who was the chairwoman of the student committee until the last year, an impeccable mistress.
Azaka once said, she was more of an intimidating empress rather than a cute princess.
She led the mindless familiars while conducted multiple parallel cognitive processes, demonstrating characteristics found in Alchemists.
This was probably because the magus who acted as her mentor was a student of Atlas.
Although she clashed with Azaka like water and oil, their secret desires were very similar.

Bond 5
Operating a submarine, much less a battleship, would be impossible for Nemo alone. As Sion undoubtedly surmised that Nemo couldn't take care of a ship by themselves, she utilized some of the Atlas Institution's fundamentals upon summoning him, thereupon incorporating the hidden skill "Memory Partition" into him. It's effects granted Nemo the skill to scatter himself, making clones that are "Similar to myself, and more specialized towards various posts."