Name: Sidney Uwe Knox (シドニー・雨影・ノックス)
Ultimate Talent: Ultimate Rumormonger (超高校級の「噂を広める者」)
Age: 15
Height: 6"0 (182cm)
Weight: 89kg (127lbs)
Blood Type: O
Phys. Desc: Sidney suffers from what he labels "Chubby-Skinny Syndrome", where most of his weight goes to his abdomen, giving him the kind of body where he'd prefer a t-shirt when swimming, but could go without one. He wears an old cotton jacket with a broken zip, and underneath it a white t-shirt with a single arrow pointing downwards on it, a pair of baggy camo cargo pants, old black and white sneakers, and a pair of plain white socks with red markings. His jacket is adorned with a large patch featuring a silver skull with pink stars in the eye sockets, framed by blue flames. He has a fairly bushy black goatee on his chin, green eyes framed by a black squarish pair of glasses, and buzzcut black hair apart from the fluffy blue mohawk he sports. His underwear is special.

From birth, Sidney was a curious kind of person. The sole child of an Irish-American Programmer who enjoys driving trucks, and a Japanese-American mother who grew up in Texas and can't cook for crap, he was already an oddball considering his mixed heritage.

Sidney's parents believed that people should be able to explore the world at their own pace, however they want, so nothing sans pornography was restricted. From a young age, he'd watch AO movies, play M rated Horror games, and still enjoy childish things such as kids' anime and comics aimed at younger readers. As such, he developed a rather odd view of the world, and was rather smart for a child his age. At that point, with an influx of different media, he began to develop his own set of ideals. He never truly went through the "childish innocence" phase, as he'd consumed fiction and non-fiction detailing the best and worst of humanity. He found people to be complex creatures who were difficult to understand, him preferring the comfort of animals instead purely because they were easier to understand.

To him, adults would drink to forget their dreams. To him, death was more interesting than terrifying. He rarely shared any world views with other kids his age, but it reached it's peak when he was about eleven years old, and he and his parents moved back to America, where he hadn't been since he was 2 years old. Beginning junior high school there, he got more and more absorbed into the world of fiction, and began to find reality boring. His life wouldn't be worthy of a movie, a comic, a game, a book, anything, at this rate.

He feared very little, but there was one thing that did scare him: Being forgotten. Being forgotten was worse than dead, in his mind. Even if you died, if you changed how the world worked, even by a little bit and it soon went back to normal, as long as your name remained within a History Textbook, or you left behind your own works in which you were immortalized in, you'd never truly be gone.

And from that stage, he began to desire to stand out. Doing things he knew he'd regret right from the get-go, he did them anyway. Doing poorly in class and then getting near perfect marks in tests, bullying older kids and being kinder to younger ones, learning how to cook and then serving what could only be considered poison to his friends; jumping out the second story window and breaking his leg; the list of nonsensical activities never ended. But still, he felt like it wasn't enough. The only way to make sure people remembered you was through two ways: be loved, or be hated. And making people hate you was a much simpler thing.
From there, he developed a sharp tongue and a foul mouth, constantly figuring out ways to annoy and insult people for no real reason other than getting people to hate him. He’d keep switching between different people as the butt of his jokes, laughing at them himself, and refusing to stop even when asked to. He’d been suspended multiple times, his report was no longer sparkly clean, but at that point he couldn’t find the will to stop.

Due to his tendency to overthink everything, he began to simplify the thought processes of his classmates, noting them down. And due to his odd behaviour, and his desire to draw some form of attention to himself so he could be immortalized in others' memories, he soon became the subject of quite severe bullying, to the point of where he was near constantly bruised. Yet he continued getting higher grades than everyone, continued to laugh and crack jokes despite his status as “the bullied one”, the works.
Yet soon enough, he had enough. He began to see how bullied people always remained bullied, even in high school, and university, and in the working world, as he began to read books with more mature, realistic themes. Taking this to heart, as he did before, mixed with his childish dreams of wanting to be some sort of hero, he found himself stuck in a sticky situation. He couldn’t directly force his way out of being bullied, but he’d already picked up on classroom hierarchy. All he’d have to do was make someone else the target.

As long as he was happy in the end, who cared what happened to everyone else?

That was the point in which the Ultimate Rumourmonger was born, spreading rumours that Girl A from class 2-C was pregnant with 3-A’s homeroom teacher’s child. He had a knack for spreading rumours, despite his placement on the totem pole. Every rumour needed a bit of truth, so he’d often supply false evidence here and there, take advantage of his good people reading skills to impersonate others, and generally mixing in the truth with lies.
After Girl A had been driven to the brink and attempted suicide, he knew that if he didn’t act fast, he’d be back to being bullied. So slowly, with knowledge of urban legends, the adult world, and other things that made making rumours a goldmine, he knocked everyone down several pegs until he reigned as king of the classroom.

It was also at this point he took an interest in delinquent manga, for whatever reason, in his desire to follow his childish dream. Said dream, however, had changed, going from wanting to be a “hero”, to just wanting to be cool. A rocker? A writer? A detective? He paid no mind to what exactly he wanted to do, as long as he could just label it “cool” in the end. Grateful for their son’s supposed improved behavior, his parents would encourage him to take on various hobbies, so around the age of thirteen he took on boxing classes, which he found he had some talent for.

By the time he reached High School, he had begun making connections online. Soon enough, he had a flood of information coming and going in and out, and he got more and more involved in the world of celebrities, the big names people cared about. In his desire for coolness, he also ended up joining a gang in high school in his first year. At least, he called it a gang, but it was really just five people and him. It was at this point when he also grew rather adept at street art, though more from constant practice rather than studying any artistic theory.
They did the typical stupid teenager things, though only Sid was aware of how stupid they were, yet he insisted on doing them anyway, and got into a multitude of fights among themselves to the point of where he would come home late at night, sneaking bags of bandages and medical tape around with him.

Of course, as a wannabe cool-guy, they would have to face other gangs and the like, though due to his network, which he expanded to fill with as many high schoolers as well, he soon had access to an enormous amount of personal information for many people, and in his desire to look cool, he began to offer himself up as a sort of mercenary to spread rumours for money so he could keep up with the latest games, buy some leather, get a motorcycle, all the typical young male dreams.
Oh, and sweets. He ran a sweet review blog on the side, because he’s a weird-ass kid.
His reputation eventually grew, and soon he went from ruining high school romances to working with dangerous people, such as major CEOs and Yakuza. At this point, his parents were also aware of his talents, but failed to know what exactly he did, except that he was getting into rather shady things. As such, his father, the kind of person who used to get into pirating games and hacking the university website in his younger years, began to focus on making multiple identities to protect the personal information of his son.

It was at this point that Sid began to see it wasn’t enough. In order to be remembered, he needed to succeed in life. He knew he had a talent. Now all he had to do was make the people who made you into a success notice it.

As such, in order to gain the attention of Hope’s Peak, he organized the “Fake Apocalypse” incident, in which near most of the country believed the world would end the next day, resulting in a multitude of riots. He left a trail leading to him that the Academy followed, until they finally met. After ending off the rumour, HPA covered the rest of it up, and he was accepted into the Academy as the Ultimate Rumourmonger.

And from there began the rest.

During Daily Life, Sid is a much more relaxed character, who jokes around a lot and insults everyone, including himself, good-naturedly, though he is prone to acting without thinking in terms of his feelings. He also happens to give everyone odd nicknames only he fully understands, and often seems to forget his actual name. During Deadly Life, he turns much more serious and focused, ditching the nicknames. He's also not very squickly, so he's quite fine investigating bodies and the like.

Sid could likely become the mastermind as a possibility of him becoming a member of Ultimate Despair, likely due to his talent being a useful asset for Junko, especially in the early phases of recruiting other students. One idea I had was him, after leaving Ultimate Despair, being "hired" (blackmailed) by him due to their capturing of his friends from HPA, who he attempted to encourage to escape before the Tragedy really started. The whole point of the game would be a sort of test, where the personalities of HPA Students, UD and not, who are near death, being uploaded to something similar to the NWP. The main goal is to cultivate all of them into Despair through the mutual killing game, Sid playing as the MM each time in order to directly influence them, and select the best possible versions of each student in order to be used to overwrite captured civilian's brains through NEUROLOGICAL TECHNOLOGY or some shit.

I can come up with other ideas later, too, or edit this one lol.