Ergo

is a young man under the care of Lord El-Melloi II in The Adventures of Lord El-Melloi II. He briefly becomes the Master of the Archer-Class Servant Ptolemy I Soter alongside Sion Eltnam Sokaris.
==Profile==
===Background===
Ergo was created long ago by the Crudelis family of Atlas, Wuzhiqi of the Summit Court, and Ziz from the Wandering Sea. Because of the method of creation he has several Gods within him after devouring their flesh. "Ergo" was the name of the experiment to create him and not actually his name, but everyone has always called him Ergo anyway.The Adventures of Lord El-Melloi II Volume 2: The Devil of the Wandering Sea (Upper) - Chapter 3 The body used in the experiment was the corpse of Alexander IV, the son of Iskandar, provided by Ptolemy I Soter. Ptolemy had wanted to use the experiment to revive his prince. However, while they have the same body, Ergo and Alexander IV are different personalities.
All three Gods within Ergo have the shared themes of "water" and "hands". The God provided by Wuzhiqi was Sun Wukong. The God provided by the Crudelis family was Set.The Adventures of Lord El-Melloi II Volume 3: The Devil of the Wandering Sea (Lower) The final God, provided by Ziz, was Oceanus.The Adventures of Lord El-Melloi II Volume 8: Fem's Casa (Lower)
The three Magi fed Ergo the Gods and left him digesting them for two millennia at the bottom of the sea, the former condition because they predicted 2300 years to be the time for an era to live and die (thus from around the end of the Age of Gods until around the expected end of modern Magecraft) and the later condition to ease up the process of digesting sea Gods. Karmaglyph Meluastea Deluc compares these two millennia to the 49 days Sun Wukong spent in the Eight Trigrams Furnace after eating the peaches and elixir of immortality, as well as the 49 days that it takes for a soul to reincarnate after death in Buddhism.The Adventures of Lord El-Melloi II Volume 5: Legacy of the Alchemist (Lower) - Chapter 3
Wuzhiqi refers to herself as Ergo's mother. As Atlas, which seeks to prevent the end of the world, was involved, Lord El-Melloi II deduces that that means Ergo was created to prevent whatever doomsday scenario the Crudelis family foresaw.The Adventures of Lord El-Melloi II Volume 1: The Man Who Devoured God - Chapter 3 Wuzhiqi on the other hand wants to devour him. Ziz from the Wandering Sea never had any plans to claim him, as he was last in line and expected the case to end with Wuzhiqi's turn anyway. 
Ziz's student, Bai Ruolong, was Ergo's best friend.The Adventures of Lord El-Melloi II Volume 2: The Devil of the Wandering Sea (Upper) - Chapter 2 He was created as Ziz's backup for Ergo and ate the flesh of something "similar enough to a God", a Dragon closely related to Ergo's second God, Set: Typhon.
===Appearance===
Ergo is described as a young man in his late teens. After awakening Sun Wukong's power, his eyes turn fiery with gold pupils.
Bodysuit Ergo.png|Ergo in The Adventures of Lord El-Melloi II Volume 1: The Man Who Devoured God, illustrated by Mineji Sakamoto.
Adventures Visual Promotional Image.png|Ergo in The Adventures of Lord El-Melloi II Visual Key, illustrated by Mineji Sakamoto.
Adventures 1st volume material clear.png|Ergo on the cover of The Adventures of Lord El-Melloi II Volume 1: The Man Who Devoured God, illustrated by Mineji Sakamoto.
Adventures volume 4 clear.png|Ergo on the cover of The Adventures of Lord El-Melloi II Volume 4: Legacy of the Alchemist (Upper), illustrated by Mineji Sakamoto.
===Personality===
Ergo has amnesia. When Lord El-Melloi II asked if that caused any problems in daily life, Ergo only responded that sometimes he gets hungry. Gray describes his personality as puppy-like, such as allowing children to play around him and cut his hair. Ergo's amnesia steadily progresses as the series goes on, and so he makes sure to draw the things and people he sees so that he can keep remembering them. He also enjoys stories after being introduced to books by Mana Ryougi.
Even though he has only known Rin, El-Melloi II, and Gray for a short time, because of his amnesia they make up a large part of his memories and so he cares a lot about them. Gray in turn compares Ergo to being like a little brother when she is taking care of him while he's unconscious, and the two bond over their similar pasts.The Adventures of Lord El-Melloi II Volume 1: The Man Who Devoured God - Chapter 3 After the events in Tokyo, Ergo starts calling Gray .The Adventures of Lord El-Melloi II Volume 3: The Devil of the Wandering Sea (Lower) - Epilogue
Rin once told him that living means inevitably hurting others, but she still does all that she can to avoid what's avoidable and be aware of what isn't. Ergo also wants to be like that. With the help of Mana Ryougi he realized that his amnesia means his present is a blank slate and he can enjoy it in any way he wants. After this discussion Ergo shifts from childish, innocent, and passive to passionate, determined, and assertive. He also starts to find Rin beautiful, whereas before he had not.The Adventures of Lord El-Melloi II Volume 3: The Devil of the Wandering Sea (Lower) - Chapter 1
After losing his battle with Bai Ruolong, Ergo becomes incredibly frustrated at his loss and desperately wants a rematch against him.The Adventures of Lord El-Melloi II Volume 3: The Devil of the Wandering Sea (Lower) - Chapter 2
He gets hungry often. When Gray uses her Dragon Core, Ergo's blood boils and he becomes hyperfixated on how much he wants to devour her. Even when she isn't using it, he still looks at her intently when he's hungry. He also turns feral and tries to devour Bai Ruolong when he realizes Ruo also has a God inside of him. He and Ruo always wanted to eat each other in the past, despite being friends.
According to Bai Ruolong, before he lost his memories, Ergo loved to sing. He'd always disappear to the weirdest places and Ruo was the one always being tasked to look for him. 
When Ergo meets Ziz, one of his creators, he says that he cannot remember Ziz but knows that he hates him. After he learns of his origins as Alexander IV, he comes to view Iskandar as his father.The Adventures of Lord El-Melloi II Volume 5: Legacy of the Alchemist (Lower) - Epilogue
==Role==
===The Adventures of Lord El-Melloi II===
====The Man Who Devoured God====
Hirsute Ergo.jpg|Ergo when he is found.
Rin The Adventures of Lord El-Melloi II.jpg|Ergo with his hair uncut standing next to Rin as they first meet El-Melloi II and Gray.
Ergo and Gray.png|Ergo and Gray facing Latio's bone familiars.
Ergo is awakened from a container at the bottom of the ocean, and found drifting near Singapore with amnesia by Rin Tohsaka. Rin names him Ergo since it is the only word he can remember when she first finds him.The Adventures of Lord El-Melloi II Volume 1: The Man Who Devoured God - Chapter 1 Lord El-Melloi II takes him in as a temporary student; temporary both because Ergo is not a Magus, and because El-Melloi II plans on quitting teaching soon.The Adventures of Lord El-Melloi II Volume 1: The Man Who Devoured God - Chapter 2
Both Latio Crudelis Hiram and Wuzhiqi attempt to capture Ergo, but they are fought off by his new friends.
====The Devil of the Wandering Sea====
Ergo Rin Tokyo.png|Ergo and Rin in Tokyo.
ElMelloi festival.png|Rin, Ergo, El-Melloi II, and Gray at a festival.
Ruo vs Ergo.png|Ergo vs Bai Ruolong.
The group travels to Tokyo to try and find a cure for Ergo's condition. While there, Rin and Ergo run into his old friend Bai Ruolong. Ruo has kidnapped Akira Yakou, who El-Melloi II has been asked to find by her family. Ruo also wants Ergo to come with him because he and his mentor Ziz, the Wandering Sea Magus involved in Ergo's creation, can help with Ergo's current situation where the Gods inside him are slowly stripping away his personality. As things are now, Ergo only has about a month left to live.
Mana Ryougi helps Ergo realize that his amnesia has given him a blank slate in the present, which he should take the chance to enjoy in any way he can.The Adventures of Lord El-Melloi II Volume 2: The Devil of the Wandering Sea (Upper) - Chapter 4
Akira has an organ from a God within her body, and as it turns out, it is the Japanese equivalent to Set, one of Ergo's Gods. Stories of Set were spread East by Iskandar's invasions, making its way to India, then China, and finally Japan.The Adventures of Lord El-Melloi II Volume 2: The Devil of the Wandering Sea (Upper) - Interlude The equivalent to Set inside Akira is Ōkuninushi.
Ergo receives a mask from Genma Tobori which can invite the Gods within him and ask them to leave. However Genma warns Ergo that once he wears the mask it will be his new face, so he should only put it on once he's sure of what face he wants to have. When he puts it on for his rematch with Bai Ruolong, it turns into the face of Set. After the battle, Ergo meets Ziz, one of his creators. He says that he cannot remember Ziz but knows that he hates him.
====Legacy of the Alchemist====
Ergo and Sion.png|Ergo and Sion in the desert.
Alexander IV.png|A hologram of Alexander IV, who looks just like Ergo.
In Egypt, Rin and Ergo meet Sion Eltnam Sokaris who is looking for a traitor to Atlas. Sion kidnaps Ergo with the Etherlite and uses Set inside him as a key to activate one of the secret entrances to the underwater Library of Alexandria.The Adventures of Lord El-Melloi II Volume 4: Legacy of the Alchemist (Upper) - Chapter 3 Once inside they run into Luviagelita Edelfelt, and Ergo feels his heart reacting to the location.
Meanwhile in another part of the library, Latio discovers that there is a fourth God in the Ergo project who could cancel the experiment if necessary and return Ergo's Gods to nature. She also discovers a hologram of a man appearing to be Ergo dressed in ancient clothing.The Adventures of Lord El-Melloi II Volume 4: Legacy of the Alchemist (Upper) - Chapter 4 Ptolemy is shocked when he hears that the hologram is of Ergo, because according to him it is an image of Iskandar's son, Alexander IV.The Adventures of Lord El-Melloi II Volume 4: Legacy of the Alchemist (Upper) - Intermission
Latio attempts to trap Ergo in a sarcophagus and link him to Osiris's Divine Body to use him to power a supercomputer and answer Atlas's questions about the end of the world. Sion uses Ergo's Gods as the equivalent of a Holy Grail to power a Servant summoning, with both of them briefly becoming the Masters of Ptolemy just long enough for Ptolemy to use his Noble Phantasm to stop Latio and seal the library. Before he disappears, Ptolemy gives an information crystal to Ergo with all of the library's knowledge about Project Ergo on it.The Adventures of Lord El-Melloi II Volume 5: Legacy of the Alchemist (Lower) - Chapter 5
Ergo's memory saturation has also progressed further, and now he can't remember some earlier moments from the series such as Rin finding him.
====Fem's Casa====
LEMA6 Waver Ergo Ziz.jpg|Waver and Ergo confronting Ziz.
Ergo & Flat Circuit Connection.jpeg|Ergo connected to Flat's Circuits to analyze his Phantom Arms.
LEMA8 Ergo and Shirou investigating (Corrected version).jpg|Ergo and Shirou Emiya uncovering a secret trapdoor leading to Juste's base.
Gray Ergo Caliburn.jpg|Ergo and Gray with a Caliburn projection created by Shirou Emiya.
The group travels to Monaco upon learning from Flat Escardos that Ziz is there. On the journey Ergo recounts his adventures so far and finds that he barely remembers what happened in Singapore.The Adventures of Lord El-Melloi II Volume 6: Fem's Casa (Upper) - Prologue
In Monaco, Ergo and Gray meet Van-Fem, who reveals that Ziz is an old friend of his. Van-Fem knows how to fix both Ergo's memory saturation and Gray's aging, and gives them the option of either winning Fem's Casa or finding the missing Shirou Emiya to get his information. El-Melloi II takes on the case.The Adventures of Lord El-Melloi II Volume 6: Fem's Casa (Upper) - Chapter 2
Ergo befriends Flat and visits his home, where Ergo confides in Flat about his progressing amnesia and asks for advice. Flat figures that rather than a side effect Ergo losing his memories is exactly what either Wuzhiqi or Ziz need to achieve their goal for him, whatever that may be. With Ergo's consent, Flat installs a magical bomb within Ergo that is rigged to explode once his memories are completely gone, to stop Wuzhiqi or Ziz.The Adventures of Lord El-Melloi II Volume 6: Fem's Casa (Upper) - Chapter 3
With Flat's help, Ergo is able to locate the missing Shirou with divine sight; in the process he sees some of Shirou's past, such as the Fuyuki fire and Shirou's fight with Archer.The Adventures of Lord El-Melloi II Volume 7: Fem's Casa (Middle) - Chapter 2 After Shirou learns about Ergo, he uses Projection to create an Egyptian divine chisel and help Ergo finish Genma Tobori's mask.The Adventures of Lord El-Melloi II Volume 7: Fem's Casa (Middle) - Chapter 4
Ergo learns that the final god inside him is Oceanus, who, being a Machine God, Ziz plans to use to traverse space so he can create a new planet. Upon learning of his last god and embracing his identity as Alexander IV, Ergo and Gray defeat Ziz using Caliburn which Shirou Emiya gave them for the fight.
==Abilities==
Ergo ate the flesh of three Gods, one each provided by the three families involved in his creation. Due to these Gods' factors, he can project six from his back. Each pair of hands comes from one of the three families involved in his creation, and all six have unique traits. The upper right hand can cancel Magic Formulae on contact. Another is able to turn things it touches into sand.The Adventures of Lord El-Melloi II Volume 3: The Devil of the Wandering Sea (Lower) - Chapter 5 All six hands can combine into a larger hand capable of destroying half an island.
To wield the powers of the Gods inside him, Ergo must put on a white mask given to him by Genma Tobori which then transforms into the face of the God he activates. With Set's powers activated he can control sand.
Ergo's amnesia is caused by his memories being saturated. As Gods have more information than what fits into a human, every time Ergo uses the powers of his Phantom Hands he has to open space inside him by removing his memories and personality. If done too much he will be completely replaced by the Gods inside him, similar to the situation with Gray and King Arthur.
He was able to regenerate from the right side of his head being blown off, though he was unconscious for several days afterward.
Ergo's five senses and physical abilities are better than Lord El-Melloi II's even after El-Melloi II has reinforced his own with Magecraft.
Ergo learns new languages as he speaks. When Rin first found him the only word he knew was "ergo", but by the time she introduced him to Lord El-Melloi II and Gray he could speak English, Malay, Tamil, and Chinese. His English initially had a Singaporean accent, but over his short conversation with El-Melloi II he started speaking in a British accent. Ergo's learning ability isn't limited to languages, as he is also capable of copying Martial Arts. Human hands take touch information to learn, and Waver speculated the next step to that will be "human hands construct".
Despite the unusable left hand and left foot, Ruo was still far superior to Ergo in Baguazhang, but Ergo could counter Ruo's more advanced move with a taolu from Rin's Bajiquan, and a combo from Wuzhiqi's ancient martial art. Ergo was covered in blood from all the cuts he got from Ruo's wings in their skirmish (martial arts aren't built to accommodate Magecraft elements in their combat), but 5/14 of Ruo's body lost movement.
===Components===
====Sun Wukong====
Ergo wields the Noble Phantasm of Sun Wukong, the . With the incantation "I think, therefore I am" ("Cogito, ergo sum") he forms his Phantom Hands into two loaded with Wukong's Divine Core, and fires it as the Ruyi Jingu Bang. A pillar holding together the bottom of ocean, an item originally made to give form to what is vague: a Noble Phantasm that held a Texture in place, just like the Holy Spear Rhongomyniad. The area hit by the staff has the space around it fixed in place by Wukong's Authority, creating a solid block of air that pins the opponent in place. Ergo follows this up by turning the Divine Arms into drills that pierce through the solid space, tearing open a hole in the air that sucks in the space solidified by the staff.
When Ergo is battling Bai Ruolong Wukong forcibly activates his Noble Phantasm Ruyi Jingu Bang from within Ergo, freezing Ruo in place within solidified space.The Adventures of Lord El-Melloi II Volume 2: The Devil of the Wandering Sea (Upper) - Chapter 3 The Wandering Sea spell Ruo shot Ergo with sealed Wukong completely, so Ergo couldn't load his Divine Core, but he could still use the Phantom Hands just fine.The Adventures of Lord El-Melloi II Volume 3: The Devil of the Wandering Sea (Lower) - Chapter 3
====Set====
Ergo also possesses the Noble Phantasm of Set, . When loading Set's Divine Core, Ergo's six Phantom Hands fuse into two Divine Arms, with the color of sand, decorated in ankhs, and seven orbs in each arm.
Per Djet is Set's Authority to split the enemy into fourteen pieces and inter them, representing how he killed Osiris. Each time Ergo hits the enemy with his Divine Arms a part of the enemy's body is "entombed" within them, represented by one of the orbs lighting up, and the enemy can no longer use that part of their body. This can be done up to fourteen times, entombing up to fourteen body parts. For example if the enemy is struck in their left hand the hand will become unresponsive.
With the incantation "Per Djet, all tombs released" Ergo can release the entombed body parts to use the enemy's Authority, such as copying Typhon's Nega-Keraunos in his fight with Bai Ruolong. However when he does so the enemy regains the use of their body parts.The Adventures of Lord El-Melloi II Volume 3: The Devil of the Wandering Sea (Lower) - Chapter 6
====Oceanus====
Ergo's final god is Oceanus, whose power allows him to wield Klironomia. Also as Oceanus is a Machine God made to traverse space, Ergo can traverse the space inside Ziz's Reality Marble Astral Infant.The Adventures of Lord El-Melloi II Volume 8: Fem's Casa (Lower) - Chapter 8
====Alexander IV====
Once Ergo learns the identities of all three gods he embraces the power of the son of Iskandar. The mask given to him by Genma Tobori becomes a crown, and he wears his father's cape when El-Melloi II provides his piece of it. In this state he is also recognized as a true King, as he is able to unleash the full power of Caliburn.
As the son of Iskandar, he is also capable of using one of his father's Noble Phantasms, Via Expugnatio. This is not an Authority of a Divine Core inside him, but something inherited from his father. When using it together with swords provided by Shirou Emiya with Unlimited Blade Works, Ergo electrifies Sword of the Cypriots in his hand─the same sword Iskandar uses─and generates an electromagnetic force to shoot six other swords wielded by his Phantom Hands like railgun bullets, simulating a trampling chariot of blades.
==Development==
The instructions given to Mineji Sakamoto for Ergo's design was to make him look like a young adult version of Alexander from Fate/Grand Order.
==References==
Category:Characters in The Adventures of Lord El-Melloi II
Category:Non-humans
Category:Introduced in 2020
Category:Masters
Category:Alexander the Great (topic)