Isu incarnation

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Reborn Isu are human reincarnations of the Isu.

While initially believed that this only applied only to Aita, a member of the Isu and the husband of Juno, reincarnations of whom are referred to as Sages, it has since been discovered that reincarnations of other Isu surfaced in Scandinavia around the 9th century. Among that group were Eivor Varinsdottir, an incarnation of Odin; her adoptive brother Sigurd Styrbjornsson, Týr's reincarnation; and Svala, the rebirth of Freyja.

Sages

Main article: Sages

A Maya statue of a Sage's head in underground Tulum

The most prevalent Isu reincarnations are those of the Isu Aita, known as Sages. These Sages reappeared many times throughout history, bore a physical resemblance to Aita, and were recognizable by their heterochromia.

Reborn Asgardian Isu

"Show me your neck!"

―Basim Ibn Ishaq to Eivor Varinsdottir, 877 CE

Odin, seven of his most trusted Isu followers, and Loki, had their DNA, memories, and consciousness integrated into the human gene pool in hope of escaping the doom of their civilization and be reborn in human bodies millennia later. These reincarnations could be identified by a mass of dark veins on their necks.

History

Isu Era

Desperate to save the life of her husband Aita, who had been left in a catatonic state after being used as subject test to the fifth method of salvation, Juno embarked on a quest to acquire the "Mead", the serum that would activate the latest solution to halt the Great Catastrophe designed by the Capitoline Triad, locked up in the Grand Temple under the guard of Jupiter and Minerva. This particular innovation, if used correctly, could reincarnate some members of the Isu as humans in the distant future, but Jupiter and Minerva deemed it dangerous to use as it would damage the human genome in the process and eventually influence human history in an uncontrollable way. Desperate for the Mead, Juno investigated their research sites and eventually encountered the abandoned project meant to receive the Mead when ready. Soon after, she began to inquire and plot out multiple ways to take it from the Vault in order to save her beloved, actions that eventually exiled her from the city guarding the Temple. Upon Odin's visit to North America to meet Aletheia, she discovered that he too sought the seventh method and so decided to wait until she and her lover Loki dealt with him before deciding to collaborate with Odin to steal the serum from the Grand Temple.

Odin managed to successfully steal the Mead from the city above the vault, Útgarðar, but not without deceiving Minerva and battling with Jupiter himself. Juno told him to come to the experimental well in order to make the serum work. After Odin sacrificed his left eye in payment in order to use it as catalyst, the machine accepted this sacrifice and the serum was finally synthesized, much to Juno's delight. With both the Isu taking samples of the fluid, she cautioned him to use the serum moments before his death, in order for it to work, as only the memories happening prior to the consumption of the concussion would be preserved within the new body. With the Mead now in hand, she was able to successfully insert her late husband's essence into a human bloodline, tweaking the functions of the solution to reincarnate his beloved indefinitely for the following millennia.

The Æsir using the "Mead" through the Yggdrasil device

Odin eventually finished the construction of the abandoned project in Scandinavia, near their territory, naming it Yggdrasil. During the midst of the Great Catastrophe, a group of Asgardian Isu comprising of Odin, Freyja, Týr, Thor, Sif, Heimdall, Iðunn, and Freyr managed to successfully upload their essences into the supercomputer before heading off to face their end in battle, gambling that Yggdrasil would successfully save them through various reincarnations in human bodies in the upcoming ages. Unbeknownst to them, Loki also snuck into the room and uploaded his essence as part of his two-step plan to first take revenge on Odin in the future for imprisoning his son Fenrir, and also to reunite with his lover Aletheia, who had her consciousness preserved in the Staff of Hermes Trismegistus.

Viking Age

During the Viking Age, the reincarnations of the Æsir finally appeared. The first was Rig Reidarasson, a Viking of the 8th and 9th centuries who was the reincarnation of Heimdall. During his life, Rig was plagued by the memories of Heimdall, believing them to be visions of the gods. His life, adventures and struggles to seize the hallucinations were immortalized in the Rigsogur, a saga wrote by the monk Brissy.

In the 9th century, Thor and Sif were reincarnated respectively in the Vikings Halfdan Ragnarsson and his friend Faravid, though they were unaware of this link. In 865 CE, when King Ælla of Northumbria executed Halfdan's father Ragnar Lothbrok by throwing him into a pit of snakes, Halfdan and Faravid conquered his kingdom and executed Ælla in return in 867 CE.

In the mid-9th century in Rygjafylke, Norway, the Raven Clan, who resided in the small settlement of Fornburg counted three Æsir reincarnations: the volva Svala for Freyja, the prince Sigurd Styrbojnsson for Týr and his foster sister Eivor Varinsdottir for Odin. In 870 CE, during a raid by the Ancient Kjotve the Cruel, Eivor captured his slave Gull, the Sage of Iðunn. Together, they eventually went up the Feiknstafir Mountains to the Temple of Heimdall, in order to recover an Apple of Eden. When Gull touched the artifact, she recovered Iðunn's memories, with the Isu's consciousness assuming control and, now armed with the knowledge necessary to control it, used the artifact to fight Eivor. As the Temple was scrambling, Gull was left to her destiny with the Apple while Eivor decided to help her clan who was being attacked by Kjotve.

The same year in Constantinople, Sigurd met the Levantine Hidden Ones Basim Ibn Ishaq, a reincarnation of Loki who had become fully aware of his nature, and his apprentice Hytham. Recognizing the mark in Sigurd's neck, Basim pondered the possibility of him being Odin reborn and, as such, followed the Viking on a trip to his hometown to investigate further. In 872 CE, Basim became acquainted with Eivor on his arrival , granting her a Hidden Blade that had belong to one of his late apprentices. Together, the three Æsir reincarnations fought Kjotve the Cruel, taking his fortress and killing him. This act permitted Harald Fairhair, the Sage of Freyr, to unite Norway under his crown. As Harald became the lord of Fornburg, Sigurd, Eivor and Basim went to England in order to found a new colony while Svala returned to the Yggdrasil Chamber, guided by Freyja's memories, to enter a simulation of Valhalla.

Establishing the colony of Ravensthorpe in Mercia in 873 CE, Sigurd became the jarl of the village, working with Eivor to establish an alliance with the Sons of Ragnar. After that, Sigurd attributed to his sister the task of continuing to gain friends throughtout England in order to expand the settlement while him and Basim would go on an endeavor. During this time, Basim would try to reveal to Sigurd his true nature and, when that didn't fully worked, he decided to search for the Saga Stone with him, a fragment of the door of the Yggdrasil Chamber that contained the password to open it in hopes that it would revive his memory. Some time after, Eivor would go on to assist his brother in his search in Oxenefordscire, with the three Æsir reincarnations allying themselves with Fulke, a secretly Ancient who possessed the artifact and was studying it and the reborn Isu. Together, they fought Lady Eadwyn, who had previously imprisoned the scholar, taking the stone with her. After they recovered the relic, Basim let Fulke betray the group, who took Sigurd as an hostage, knowing that he would be tortured by her to awake his Isu nature.

In 874 CE, Eivor and Basim travelled to Cent, the place where Fulke had been reportedly seen by last. They ended up being tricked by the Ancient, who fled with Sigurd. The Hidden One and the Viking then found her sanctuary in Canterbury, discovering that Fulke had cut off Sigurd's arm and that she had took him to the fortress of Portcestre, in Suthsexe. In the year after, the two reincarnations and their allies besieged the castle, with Eivor saving her brother and finally killing Fulke. Nevertheless, the torture that he had endured greatly altered his mind after being exposed to Týr's memories, as he saw himself as a god, becoming arrogant.

During one of her adventures, Eivor allied with Halfdan and Faravid to fight the rebelled King Ricsige of Northumbria and his Picts allies. After Halfdan became the new king of Northumbria, an argument arose between Faravid and the new King, the latter accusing his friend to poison him. This greatly affected Halfdan who became depressed. Eivor helped him to recover his morals.

During her journey, Eivor experienced several hallucinations of Odin, manifestations of his conscience trying to emerge in her mind, who sometimes directly spoke to her. With the seer Valka helping her to understand the meaning of the visions, created two potions that permitted her witness altered memories of Odin in Asgard and Jotunheimr.

In 877 CE, Sigurd and Eivor returned to Norway, entered the Yggdrasil vault and used the device. They experienced a simulation of Valhalla, encountering Svala as Freyja, as she was there for five years. Even if they enjoyed the simulation, they understood that it was false and decided to leave while Svala stayed. Odin tried to convince Eivor to stay but she fought him and escaped from the simulation, repressing her Isu side. Basim, who followed them, understood that Eivor was Odin's Sage. He took Sigurd hostage but quickly released him as Eivor attacked him. Basim blamed the imprisonment of his son on a clueless Eivor, believing he was mad. As the Hidden One was too strong for Eivor, Sigurd used the Yggdrasil device to trap Basim, sending him to the Grey. After this, Sigurd retired from his role of the jarl of Ravensthorpe and designed Eivor as his successor.

Gallery

• 
  Rig Reidarasson
  Reincarnation of Heimdall
  (c. 770s CE - c. 860s CE)
• 
  Svala
  Reincarnation of Freyja
  (? - 873)
• 
  Halfdan Ragnarsson
  Reincarnation of Thor
  (c. 790 CE – 877 CE)
• 
  Faravid
  Reincarnation of Sif
  (? - ?)
• 
  Basim Ibn Ishaq
  Reincarnation of Loki
  (? - present)
• 
  Sigurd Styrbjornsson
  Reincarnation of Týr
  (842 CE - ?)
• 
  Eivor Varinsdottir
  Reincarnation of Odin
  (847 CE - ?)
• 
  Gull
  Reincarnation of Idun
  (? - ?)
• 
  Harald Fairhair
  Reincarnation of Freyr
  (c. 850 CE - c. 930 CE)

Appearances

• Assassin's Creed IV: Black Flag (first appearance)
• Assassin's Creed Unity: Abstergo Entertainment – Employee Handbook
• Assassin's Creed: Unity
• Assassin's Creed: Syndicate
• Assassin's Creed: Uprising
• Assassin's Creed: Valhalla