(Briefly answering these to prevent spoilers)

"What's the Nigredo Phenomenon?"

Mutation of the Pokerus that causes the affected Pokemon to take on a primarily black color with a secondary (or in select cases - tertiary) color scheme. Based on the real life melanism phenomenon. They're much stronger than the average Pokemon, on par with those found in Ultra Space, but they're more unruly and the conditions for raising them are stricter. They're often seen as "Harbingers of Misfortune" since, like Absol, shit hits the fan real quick whenever one's around. But only when Elio masterfully uses them throughout his journey does their negative reputation steadily dissipate, becoming more desirable in the eyes of trainers and collectors alike. Such that special regulations and programs had to be created for proper usage and care.

"I adore the nicknames you've given Elio's Pokemon. How did you come up with them?"

Random name generator or variation of a deity's name.

"I have to know the lore of the five Unovan Royal Families!"

[REDACTED]

"OMG U BROUGHT BACK NEW TORK CITY FROM THE ANIME MOVIE YES"

It's underutilized as both a concept and a location. So it's best to layer that with Black City to give it more development room while expanding on futuristic themes associated with it.

"Hold up, u mean to tell me once Elio contracts with Ziodyne, New Tork City is overlayed with black city? SO AWESOME! (big black city fan)"

In this continuity, Black City and White Forest are interconnected with Zekrom and Reshiram. Zekrom represents the future, night, idealism, the artificial, and progression. Black City's an amalgamation of these concepts - consistently evolving to reflect both the contractor's state of being while subtly influenced by the advancements made by its new denizens. On the other hand, Reshiram represents the past, day, pragmaticism, the natural, and stagnation. Ergo, White Forest's an also an amalgamation that's unchanging and preserves its natural beauty by any means - producing only what's necessary. It should be noted that the overlay cause these locations to be their own worlds like Ultra Space Pocket Dimensions, yet still physically connected to Unova. The rules of these two locations are vastly different to anywhere else.

"Not related to Elio's lore, but do you think Elio would catch - or at least be interested in - an Aevian Volcarona?"

Elio has one and his name is Metashan: a combination of the Angel Metatron and Pushan - one of Surya's various names in Hindu Mythology.

(I have this shit sitting in my inbox for two years, so let me get to it)

Since Elio's my main OC across various media, he has different inspirational sources depending on the story he's in. However, certain characters make up the core aspect of his personage - which gives him various degrees of consistency. I'll list them below:

🔲 [Yu Narukami]: P4's protagonist - specifically his anime counterpart. Elio takes after a good portion of his quirks and mannerisms. Initially wanted to have Johnny Young Bosch voice Elio, but opted out for Zeno Robinson - who had the perfect pitches for Elio's vocal range, not to mention the Black VA rep. His skill with a sword also stems from Yu.

🔳 [Kotone Shiomi]: P3's Female Protagonist. Like Yu, she'd adopt various personality aspects - especially her upbeat and feisty nature, in addition to a pair of headphones being critical to his design. Like her and Yu, Elio has a voracious appetite.

🔲 [Jose Natasha Violeta Alexandors]: The supporting character from The God of Highschool, and most definitely THE MOST PRIMARY INSPIRATIONAL SOURCE, BAR NONE!!! From his outfits to hairstyles to certain personality traits to his body type to his family situation, and even his fighting style. ̶H̶o̶n̶e̶s̶t̶l̶y̶,̶ ̶y̶o̶u̶ ̶c̶o̶u̶l̶d̶ ̶l̶a̶b̶e̶l̶ ̶E̶l̶i̶o̶ ̶a̶ ̶J̶o̶s̶e̶ ̶r̶i̶p̶-̶o̶f̶f̶.̶ If they existed in the same universe you'd pass them off as twins. If Jose didn't exist, Elio would drastically be different.

🔳 [Zhou Yuan]: Protagonist from Yuan Zun. Elio's overpowered nature, growth rate, sheer luck, and the string of victories come from Zhou Yuan. Like with the others, you can see aspects of his personality in Elio - specifically his loyalty towards his friends bordering zealotry, maturity and wisdom unbefitting his age, his lack of greed and arrogance despite his insane strength and wealthy upbringing, and general integrity - keeping to his word and repaying the kindness of others at his own expense.

🔲 [Hiro Kageyama]: DS2 manga iteration from Devil Survivor 2 -Show Your Free Will-. Again, personality-wise, Elio's inherited his calmness and passivity (albeit in moderate doses), in addition to his decisiveness and intelligence; Elio's abnormally immense charisma is something he also picks up from Hiro (and to a certain extent - Yu, a la his "Chad Factor").

🔲 [Childe]: The Eleventh Fatui Harbinger from Genshin Impact. Honestly, the amount of similarities between Childe and Elio is so much that it's frightening. Like Jose, I feel that Childe's an immediate source for Elio's core character due to similar backstories, battle lust and combat prowess, both being family men, a well-rounded homemaker, having secrets he doesn't want his siblings to know, spending time in a dimension against their will - growing stronger as a means of survival, the loss of light from their eyes (which Elio would regain in later years), and both being "Mr. Worldwide". Honestly, I can easily see the two being very close friends and rivals.

Elio has quite a few people he would consider his best friends - people he would literally bend over backward for without hesitation should the situation call for it. Among them are:

🔵[Choi Taejin] - his ever-loyal-follower-turned-significant-other.

🟤[Ashe Solur] - his first-ever genuine friend known for his short stature and introversion that beguiles his godly jack-of-all-trades skill set: especially at his (then) age, which only improved significantly over time due to a plethora of external factors and his personal desire to support Elio in any way he could.

🟡[Andrew Faradohm] - Elio's occasional "partner-in-crime" well-known for being a 'happy-go-lucky golden-haired electromaster' and one of Unova's resident Top Rangers: touted by many to be the best in his field - even amongst those in the Martial Arts world.

Despite being part of Elio's inevitable "harem", all of them share a myriad of intimate experiences with Elio - individually, in pairs, or as a trio, often seeing the silver-haired prodigy at his lowest and, in their respective ways, helped him to become a much better version of his previous self.

For Elio, there is no 'ultimate team' since every composition of the 'mons either captured or under his care will inevitably get the job done - having trained each of them to such levels where they can easily compete with Champion-level opponents with the utmost ease. So despite their either weak presence or docile demeanor some of them give off in part to their comfortability around their master, they're quite skilled in their craft and pack a rather lethal punch when underestimated.

In terms of battle mechanics, Elio's mastered a large variety of them to the point where it ultimately wouldn't matter whichever's used against a fellow Champion, so long as it serves its purpose in the grand scheme of his myriad and interchangeable battle plans and combat tactics. He does, however, favor [Mega Evolution] and [Crystallization] due to their respective sublime appearances that often match most of his teammates' respective aesthetics and personal tastes.

Note: The Crystallization phenomenon is derived from the in-development fan game, [Pokemon Azurite] - which originates from the Kuria region's native legendary.

Uncharacteristically ̶a̶t̶ ̶l̶e̶a̶s̶t̶ ̶f̶o̶r̶ ̶h̶i̶s̶ ̶c̶u̶r̶r̶e̶n̶t̶ ̶s̶e̶l̶f̶, Elio would honestly have a resting bitch face throughout his time in a haunted house; Renee and the others would feel some type of boredom. In general, they would want to get it over with. The experience is incredibly lukewarm by a rather low margin, and compared to everything else the younger Argentiums have undergone - especially Elio, who's arguably had it the worst out of the nonuplets, a haunted house is... relatively mundane. If anything in that house did try to harm them, however, it would swiftly be dealt with - their experiences battling [Nightmares] in the [Dreamscape] serving them well in-advance.

Elio found himself more partial to water parks than amusement parks, so a lot of his favorite rides and activities would stuff like the <Lazy Rivers> - which helps him unwind, <Deep-End Wave Pools> - which assists in working on his core and acting as a form of resistance training: learning to stay afloat and keep a stable center of gravity admist harah watery environments, and <High-Altitude Topsy-Turvy Water Slides> - which gives him a momentary high unlike any other.

Though, during the times when he visits amusement parks - he's prone to <Ferris Wheels> (for the scenery and momentary peace), <Rollercoasters> (for the high-altitude thrills), and <Carnival Game Stands> (which tests one's physicality in some way, though Elio ends up winning in lieu of said games being rigged).

Elio's romantic life would take full swing post-graduation, so his official first date would most likely be a few days after he's officially graduated from TUA. He wants to make sure his romantic commitments doesn't interfere with his academics and other social activities, not to mention taking time to sort out his feelings and being fully confident in himself before taking the 'first step'.

Funnily yet typically enough, he would be asked out first h̶i̶s̶ ̶p̶o̶p̶u̶l̶a̶r̶i̶t̶y̶ ̶p̶u̶t̶t̶i̶n̶g̶ ̶i̶n̶ ̶t̶h̶a̶t̶ ̶w̶o̶r̶k̶ ̶a̶n̶d̶ ̶d̶o̶i̶n̶g̶ ̶w̶o̶n̶d̶e̶r̶s̶, causing him to internally spiral; it's one of the few moments he's caught off-guard, even if he plays it cool. Though come their first date, even when rationalizing it as just another 'hangout event', Elio does his best to make sure he doesn't look like an ass - extensively prepping days prior in lieu of the extensive improvement in his social skills over the past few years. On the day of, he would do his best to maintain his usual levelheadedness and 'cool factor' - though his "inner dork" would sneak out every now and again t̶h̶a̶n̶k̶f̶u̶l̶l̶y̶ ̶i̶t̶'̶s̶ ̶s̶e̶e̶n̶ ̶a̶s̶ ̶a̶ ̶h̶u̶m̶a̶n̶i̶z̶i̶n̶g̶ ̶a̶n̶d̶ ̶e̶n̶d̶e̶a̶r̶i̶n̶g̶ ̶f̶a̶c̶t̶o̶r̶ ̶-̶ ̶a̶d̶d̶i̶n̶g̶ ̶t̶o̶ ̶h̶i̶s̶ ̶a̶p̶p̶e̶a̶l̶.