AN: Thank you everyone for updating me about the issue that happened with this chapter. I have fixed the errors, and I hope you enjoy.
True Name: Nico Di Angelo
Most Likely Servant Class: Saber
(Information of the Saber class can be observed in Annabeth and Percy's Saint Graphs)
Nico Di Angelo is likely to qualify this class due to a mix of authority and swordsmanship. This is Nico Di Angelo as 'The Ghost King,' with him having the ultimate authority over the ghosts of the Underworld. Here he is at his apex as one of the strongest fighters in The Second Titanomachia, commanding the armies of the dead in his father's name. This would be before his passage into Tartarus, the experience which caused immense psychological damage to the son of Hades.
Other eligible classes: Assassin
As mentioned in Annabeth's Saint Graph, this class is characterized as having either a connection to stealth or death. In Nico Di Angelo's case, this would be the son of Hades after his trip to Tartarus, the experience both traumatizing the son of Hades yet developing his connection to his dominion even further, to the point that he almost became one with the shadows (albeit a more literal example, to his detriment). He has a surprisingly high amount of presence concealment as a result.
Here his physical parameters are weakened, but his connection to the concept of 'death' is further expanded, growing in a way his Saber class self could never reach. While his Saber incarnation is focused on him as a leader of the dead, his Assassin incarnation is the wielder of Death, having authority over souls and the shadows themselves.
Origin: WWII of the Divine Parallel World - In comparison to the demigods he fought alongside with, Nico Di Angelo is connected to the Divine Parallel World during the time period of WWII. Though his memories were washed by the River Lethe, he eventually recovered these memories through time, and has thus inherited multiple values ingrained to him from such a time period. This has sadly caused him constant anguish, for the values he learned back then clashed against his own sexuality and desire for love.
Another consequence of his origins is that he is one of the few children before the Pact of the Big Three - an agreement between Zeus, Hades, and Poseidon that they would never have any demigods after WWII. As a result, he arguably has an advantage in terms of mystery and thus has a higher plethora of skills and abilities compared to most demigods. Though his mind and body were biologically in their young teens, his soul is nearly ninety years old.
Alignment: Chaotic Good (See Rider's Saint Graph for clarifications). However, one thing that must be kept in mind is he is more suited towards his alignment due to a mix of his own personal solitude alongside the isolation he experienced in Camp Half-Blood. If he were summoned as his Assassin counterpart, he would be more closely aligned to neutral good, for he has found acceptance that reduces such loneliness.
Hidden Attribute: Earth. The attribute given to heroes who originate from fantasy and the myths of legend, a trait that is usually given to heroes that, while not divine, still have supernatural abilities. However, this trait is not given to Nico for he still has divinity, but due to his divine heritage coming from the God of the Underworld.
Physical Parameters (You know the drill, see Leo's Saint Graph).
Strength: B. Though Nico has never shown any physical feats on par with Percy and Annabeth, he was often compared to have similar levels of power with his fellow children of the Big Three. However, due to his mental and biological (his chronological age is in the 90s) age, it is easier to infer that he is slightly weaker in comparison to demigods such as Percy. He has been shown keeping up with his fellow children of the Big Three, but only in terms of martial skill and not physical strength.
Endurance: C. One key trait that Nico has shown, whether due to his youth or some other factor, is that he lacks the same physical endurance and stamina of his fellow counterparts. Though he was one of the veterans of The Second Titan War, he has often focused on commanding the dead and ordering them to follow his orders. When he fought the Titan Iapetus alongside Thalia and Percy, he was the first demigod to be removed from the conflict by the titan.
Agility: A. In contrast, Nico has shown a more consistent set of agility - oftentimes, he has emerged from battles without any evident injury. Though one could argue that it is a sign of his swordsmanship skills, it could also be an indicator of high speed. Due to this ambiguity, he was given a relatively high agility skill, though it would be higher if he was summoned as Assassin.
Mana: A+. Nico has shown constant demonstration over his powers to an extent most demigods do not show, even showing a variety of magical abilities. This would include umbrakinesis (control of the shadows), necromancy of all varieties, and even osteokinesis (control over bones) and even having some sort of authority over sleep. Thus, he has a high ranking when it comes to mana, though once again it must be emphasized that such an amount would be weaker if he was summoned as Assassin.
Luck: D. Nico has had… a mixed bag of luck, to say the least. His life has been laced with tragedy, whether it be losing loved ones or going through unrequited love, or in one case, going through Tartarus itself… alone. He has constantly been in exile during his life, only recently gaining some form of acceptance in Camp Half-Blood and Camp Jupiter, alongside gaining a boyfriend in Will Solace.
Noble Phantasm: EX.
Class Skills:
Magic Resistance: C. Compared to his compatriot Percy Jackson, Nico has shown a distinct lower amount of magic resistance. One evident example was when constantly being exposed to shadow traveling, he was eroded to the point that he nearly became part of the shadows that he once manipulated. Thus, while he has been exposed to a similar amount of magecraft, 'magic,' and divine authority, he doesn't have the same amount of tolerance.
Divinity: A. Due to him being a child of the Big Three, Nico has a relatively large amount of divinity, though it does not match what other demigods such as Gilgamesh or Heracles has. This gives him resistance to certain mysteries and enhances his own abilities, making enemies have a harder time dealing with him if they do not have immense martial skill or are divine themselves.
Unique Skills:
Charisma of Fear: A. Nico has shown to have a level of charisma that inspires fear in those around him, to the point that he seems to radiate an aura of fear and death not unlike his father. This causes his opponents to be fearful of him, allowing him to take advantage of said fear to give him an advantage in terms of morale. Sadly, it also has a negative influence over his allies, and thus he must be careful with using it, lest his Master decide such a Servant is too troublesome.
Determination of Steel: A+. As seen in Annabeth's saint graph, such a skill is a concoction of both bravery alongside the calm and collected skills, mixing them to the point that the Servant can perform feats they cannot usually do. However, as mentioned earlier, it has the consequence of physical backlash. Such a skill was given to Nico at a higher level in comparison to Annabeth due to his experience of going through Tartarus alone while maintaining his sanity and transporting the Athena Parthenos despite the threat of his own shadows swallowing him whole.
Authority of the Underworld: A++. Many demigods of the Divine Parallel World, in comparison to their demigod counterparts in Proper Human History, have a more extensive set of powers due to the Age of the Gods still being highly active despite the presence of man and the developments of contemporary technology. This can be seen in the multiple blessings corresponding to each demigod's divine parent. Nico Di Angelo is no exception, except rather than receiving his blessing from the heavens, he receives it from his father's divine authority over the Underworld.
With Nico one of the few children of the Underworld left in existence, one that was allowed to come to his own, he wields such a blessing with ease. This means that he has multiple skills corresponding to the chthonic deities that reside there, whether it be the darkness of Nyx, Thanatos' control over the soul, to his father's authority over the dead as their rightful king. As such, Authority of the Underworld is a mixed set of skills: Umbrakinesis, Necromancy (Divine), and hypnokinesis.
Umbrakinesis is the control over the shadows themselves - whether it be turning them into kinetic weapons, absorbing or increasing the darkness in an area, or even using the shadows to create a form of pseudo-teleportation, which Nico has taken to calling Shadow Travel. However, it is a double-edged blade - in sunny areas it is difficult to use, while using this skill too often can overwhelm Nico's own magic resistance, and quite possibly destroy his spirit origin due to overuse.
Necromancy (Divine) is rather unique in comparison to Egyptian Magecraft, or the Necromancy performed by the Clock Tower in that rather than simply communicating with the souls of the dead or creating constructs out of the bodies of the departed in mass numbers just to create weapons or abominations, such feats are performed due one's primordial connection to the dead.
Nico can summon the skeletons of the dead with ease, where necromancers need to extricate them from the battlefield. He can communicate with ghosts or undead souls with ease when mages must carefully craft mystic codes or carefully design rituals in order to do so. He can detect the life force of any being with a soul to the point even Servants with presence concealment cannot avoid his detection. Finally, he can even influence the state of a living person's soul, extracting it from their still breathing body and turning it into a shade.
This skill, much like Nico's own Umbrakinesis, has its limits. Summoning the dead in large numbers can be magically exhausting not to him, but also to himself. Furthermore, if he is forced to use his necromancy too frequently, it has the potential to leave him physically and mentally exhausted, making it difficult for him to return immediately to battle afterwards.
Finally, Hypnokinesis is one of the more mysterious skills, with Nico having the authority to induce sleep into others, communicate with others through dreams, or even put himself in a severe, death like trance in order to avoid being killed after suffering from increased injuries. It is extremely useful for mages, who would want to use such abilities to avoid detection. However, Servants with high enough mental or magic resistance can negate such effects, making it difficult to apply in combat against stronger servants.
Noble Phantasms:
Sovrano dei Fantasmi: The Feared Ghost King — A (Anti-Unit/Anti-Mind). Nico's status as The Ghost King, which he personally took from King Minos, its previous owner. Nico's own authority over the dead, the fear he invoked against the armies of the Titan King Kronos which gave him such a title, are materialized in this Noble Phantasm, which takes the form of a weaker version of his Father's Helm of Darkness.
Compared to his Charisma of Fear skill, which invokes residual fear, this skill delivers a sharp mental attack to those who investigate it when its name is invoked, drowning them in their worst fears and their moments of despair. Only those who have mental or magic resistance, or divinity may be able to ward off this attack, though they may suffer from lower parameters because they were exposed to the Noble Phantasm. Servants who have Madness Enhancement have the negative side-effects of the skill increased while the positive benefits are decreased. Only those who have a high magic resistance, mental resistance, or Divinity may completely ward off the Noble Phantasm's effects.
Sceptrum Inmortuae Legionis: Undead Legion, Rise — A+ (Anti-Army): The Scepter of Diocletian. Although this noble phantasm once belonged to said Emperor, Nico has a claim to it after he was rewarded after being given it to Cupid, albeit as a reward for going through a traumatic experience. Though he originally was unable to command the dead he summoned through the Noble Phantasm, his friendship with Reyna, Praetor of New Rome, allows him to overcome such a limit as a Servant.
This Scepter allows Nico to summon an undead Roman legion, though its nature is almost comparable to that of Darius III's Athanaton Ten Thousand, albeit with a more extensive power and more limitations. The Noble Phantasm acts as a conduit of Nico's divine necromancy, allowing him to summon the dead at a faster rate, in higher quality, and at a lower mana cost, without the limits of Darius III's Noble Phantasm in terms of the amount if can summon.
However, there is one limitation: The Noble Phantasm can be used only twice, mainly due to Nico not being the proper owner and due to such limits imposed by his own legend. Therefore, the Noble Phantasm must be used strategically and in strategically vital moments. Furthermore, using such a Noble Phantasm poses the risk of there being a lack of long-term magical energy in Nico.
Xifos Ton Nekron: The Undead King's Sword — EX (Anti-Unit/Anti-Soul): The Sword of Hades, a Divine Construct that was forged in the Underworld, the Symbol of Power that would have upset the balance of the world in Hades' favor. Embedded inside it is one of the Keys of Hades, which has the possibility of sending or summoning a soul into the Underworld. Therefore, it can remove a soul's ties from the Underworld, or implant the concept of the Underworld into any being. It is a Noble Phantasm gifted to Nico as a form of gratitude from his Lord-Father.
One could almost describe its nature as akin to Ereshkigal's Kur Kigal Irkalla, for with it Nico can use his authority over the underworld to send any living being into the Underworld, a place where he would be practically invincible, and can call forth great heroes from the underworld to his aid. However, it must be kept in mind that such souls must not be confused with Heroic Spirits or Servants - while they may have similar abilities and weapons, their bodies are decidedly mortal in durability. When the Noble Phantasm is used at its maximum power, Nico can summon Iapetus from Tartarus, invoking his friendship with the Titan and using it as a catalyst for the summoning.
However, such a Noble Phantasm comes with a massive drawback, much like any Noble Phantasm that is divine in nature and so connected to death. It has an immense cost in mana, even more than Noble Phantasms such as Achilles' Troias Tragōidia. Furthermore, its use of summoning souls from the Underworld is temporary, for the concept of the Underworld only exists in the Age of Gods. If he doesn't have Master that can provide a strong enough output of mana, then he risks burning through his own mana reserves and draining the life force of his Master.
