Anti-Climax Boss: In-Universe example. The final Guardian of Tartarus goes down like a chump, slightly disappointing Roy.
Arch-Enemy: Of all Roy's enemies, Jin seems to be the one he hates the most. Unless one includes Ryoji/Nyx on that list.
Arson, Murder, and Jaywalking: After getting beaten horribly by Roy and then acting as Mr. Exposition, Ryoji falls asleep on the bridge. His last conscious thought is that he hopes his nose doesn't get broken from the fall.
Ascended Extra: Hamuko Arisato (the female P3 MC) acts as a recurrent side character.... until she joins SEES.
The Reaper is treated as a character and reoccurs throughout the story.
Roy and Shade team up against a third version of Roy inside a casino inside of Roy's head at one point.
Berserk Button: Don't ever try to kill his friends (least of all, Aigis). Or damage his hat. Do not discuss his dead parents, especially not in front of other people. Don't take your marital problems out on your child. Lastly, don't lie about him, least of all to his face.
Hair-Trigger Temper: Not only does he have a few buttons, but even accidental pressing will set Roy off.
Big Damn Heroes: The Reaper pulls this off thrice. First he frees Roy from Ikutsuki's trap, then he keeps Takaya from attacking the group during an encounter with him. Then once more during the final battle.
Koromaru also helps with the first instance of the above.
Hoist by His Own Petard: Lampshaded, of course, by Roy. Who set Roy up so that he could take down Ikutsuki? Koromaru, the very dog Ikutsuki insisted on adding to the team.
Ice-Cream Koan: Roy's comforting words to "Maya", openly admitted by the narration.
Inner Monologue: Considering that the readers are taking a peek into Roy's head, a lot of this is to be expected. If you combine this with Shade's or Azren's banter, it becomes something like an Inner Dialogue.
The Other Darrin: Allegedly played straight, though not really a trope that can come into play during a fan fiction. In Chapter 46, Roy's voice starts sounding like Dante because the author got tired of imagining him speaking in a different voice.
Person as Verb: Azren talking to Roy about the possibility of Chidori sacrificing herself to save Junpei's life by "pulling an Edward Elric". The best part is that Junpei and Edward are both voiced by Vic Mignogna.
Mutual Kill: How Mitsuru and Chidori defeat each other in the coliseum.
No Holds Barred Beat Down: Hades unto Yukari, in a very similar way to the one in A Fool Named Fortune. The victim even pressed the same Berserk Button. Further proof that it's Roy's worst button when it's revealed Hades is a part of Roy.
Only Sane Man: Hades acts as this, especially when SEES about to start fighting over the keys. At that specific time, Shinjiro, Hamuko, and Koromaru adopt this behavior as well and take his side. Junpei has this trope in the same way he did in the original version of The Answer.
Many character tropes for Roy still apply, though should be re-listed if they are used differently.
Adaptation Expansion: This version further takes a look at Roy having a new life in Japan, specifically how he's left behind a few of his friends in Seattle and talks to them at one point, as well as his physical fighting abilities.
Chapter 12 has some Call Forwards, unexpected Call Backs, and a very unexpected Mythology Gag. In order: Roy literally runs into Yosuke after getting Aigis clothes. He then gets put through Training from Hell by Lisa Silverman, who is dating Tatsuya Suou. He meets Hito-Shura when Koromaru awakened Cerberus. After arriving in Inaba, Roy name-drops St. Hermelin, Seven Sisters and Kasugayama as competing schools. While searching for his uncle's shop, Roy gets run over by the dog that Chie raised for Yukiko and meets Chie, and unexpectedly shakes hands with Izanami. Finally, he watches Kanji beat the shit out of the bikers, and subsequently meets Dojima. What a mouthful...
Chapter 17 brings a bigger... crossover(?) ...to the table: Shinjiro has an aunt, uncle, and little cousin. His aunt and uncle are Argilla and Roland (although Argilla is renamed Asami). An older brother by the name of Katsuro has been mentioned, as has a grandfather named Daichi.
Katsuro has been revealed to more or less be none other than Owain, which by default makes Shinjiro's mother Lissa.Certainly explains where Shinjiro picked up his axe skills ...
On another note, a small note made by Roy calls Yukari (to quote): "the biggest closet Featherman nerd this side of Ken Amada and nothing you say or do will convince me otherwise". This is due to the author's headcanon that Yukari is the biggest nerd in the group due to her appearance in the Persona 4 Arena sequel.
Chapters 23 and 24 do a Whole Plot Reference with the Asura Project, which is the Reshuffled version of the Karma Society and the subsequent events of the Digital Devil Saga duology. In this version, the Karma Society was the Kirijo-run Asura Project, which dedicated to finding a way to awaken Persona Users through the use of an MRI rather than force them into a "fight or flight" scenario. The plot continues like the games, Serph Sheffield tried to use the project to obtain godhood. Here's where the similarities end, however: in this continuity, Jenna Angel (named Tenshi here) is not only one of the heroes, but she's Mitsuru's mother. The rest of the playable heroes from the games are here: Fuuma Madakaze (Gale), twins Mizuki Dojima and Sayaka Norimoto (digital Serph and Sera respectively) note them being twins plays on their joined form Seraph from DDS 2, Hayate Norimoto (Heat), and Cielo keeps his "name" by virtue of it being a nickname due to his love of Cielo Mist. The two ally Tribe leaders helped them out as well: Kagerou Tadou (Lupa, Koromaru's owner) and Mio Yoshino (Jinana, Chidori's mother). Minor villain Bat from DDS 1 is named Tatsu Sakaki and is Takaya's older brother; Takaya himself was to be part of the Asura Project, before Ikutsuki abducted both him and Chidori for the Strega Project.
Chapter 24 also has an appearance by the protagonist of Norimoto Style, seen this time with a different Persona that he had in his cameo in the original AFNF. This is likely due to the author's plans to rewrite Norimoto Style once Reshuffled is finished.
Roy says "eyebrow" in his narrations whenever something catches his attention and he'd raise his eyebrow.
Character Development: Out of universe. Roy is more composed and approaches relationships with others more realistically (i.e. he doesn't hate or like people as much off the bat).
Compressed Adaptation: Arguable. Things move much quicker, however all of the chapters are much longer than the early chapters of the original version.
Creator Cameo: A blink and you'll miss it version in Chapter 20, and even then, only if you know where to look. It's hard to miss though, seeing as one of the other cameo characters, who are friends of the author by his own admission, that appears alongside the author's cameo apparently terrifies Roy.
"IT'S THE KAIJU~!"
Roy's Narration: OH GOD SHE'S BACK note considering this cameo is of the person behind Everything Into Darkness, terror is probably a good reaction.
Genre Savvy: Roy doesn't have this as much as last time, but he knows enough about certain genres to convince Junpei that being the hero's best friend is better than being the hero. During the monorail operation, he claims that the hero's friend usually gets a better-looking girl who may or may not be swayed from evil.
Gratuitous English: Roy to the other members of SEES and any time he summons Thanatos via Pharos' influence.
"Come forth O god of Death...THANATOS!"
Invoked deliberately in chapter 16 by Roy when talking to Ikutsuki about Ken joining SEES.
Hidden Depths: Junpei is quite knowledgeable about coffee, just like in the FeMC's link with him.
Roy also has a fair bit more than he had in the original story as shown in Chapter 26.
Large Ham: Shinjiro's older brother, Katsuro. Being a walking reference to Owain is likely the cause.
Let's Get Dangerous/I Am Not Left-Handed: Roy wears a sarashi on his arm until he decides to get serious in a fight and start going all out. He's able to succeed at fights splendidly without doing this, for the most part.
Could also count when he decides to put his foot down and stop October Fourth dead in it's tracks by yelling at the senpai and Ken for not doing a thing to get things under control before Roy decided to do something. He stops an attempt from Ken tostab Shinjiro ... by breaking the table and hitting Ken with it.
Man Behind the Man: Ikutsuki. He not only created Strega, but tried to kill Shinji by supplying him with the suppressants via Strega. When that failed, he brought Ken in. When that failed, he hijacked Aigis. When THAT failed, he tried to claim to have one more ace up his sleeve. He got his neck squeezed like a grape for his trouble.
Memetic Molester: In-Universe. This time it's not just Roy who finds Ikutsuki to be unsettling.
And as of Chapter 26 for DAMN GOOD REASON!
Mind Rape: VERY much how Ikutsuki's hijacking of Aigis is seen by the lady herself.
Mood Whiplash: Roy mentions this trope when he establishes the Devil Social Link with Ken in Chapter 13.
"No, Roy, you just don't get it." I said. "One does not simply LIKE Doritos, one fucking LOVES Doritos because they are what is right and just in the world! If you don't like Doritos, then the terrorists WIN!"
Papa Wolf: Roy stays behind to fight the Reaper on their first encounter so that no one else would get hurt fighting him. In general, he'll put himself between his friends and danger.
It shows again in Chapters 14 and 15 after Maiko ends up in Tartarus.
Parental Abandonment: Averted with Hamuko, surprisingly enough; her parents are mentioned often, and even send her gifts for her birthday!
Perspective Flip: Chapter 7 is from Junpei's point of view, which is the first of seven total. Chapter 11 has it from Shinjiro's point of view, Chapter 17 has it from Yukari's, Chapter 22 has it from Hamuko's, and Chapter 26 gives Aigis the reigns.
Punny Name: To his chagrin, Roy has one. Roy L. Fortune, which sounds like Royal Fortune.
Sarashi: If Roy describes whether or not he is wearing one on his arm, it as an indicator of how seriously he intends to fight.
Various Touhou Project Shout Outs have started cropping up; Junpei and Hamuko start teaching Roy how to play the games.
Slasher Smile: Hamuko sports one when she first uses her Persona.
Spared by the Adaptation: Shinjiro and Chidori, as per the original story. Jin may survive this time around, due to his loyalty to Tayaka being shaken. Takeharu Kirijo has been spared, but he was still injured by Ikutsuki.