New Headcanon Book

Persona 5: Arena of the Fateless Prison

Ren Amamiya : The Phantom gentleman of shadow and dusk 
Arcana/Confidant: The Fool
Persona: Arsene / Satanael
Weapon: daggers/knives
Playstyle: A all-rounded/jack of all stats with decent physical and magic moves, but what makes Joker a joker is the quickness and agility. A true phantom thief will show it's quickness and agility
Instant kill: Sinful Shell (Ren Amamiya soon summons arsene and chains floats around before spreading out, if hit, the fighter is then transported into what seems to be a blackened platform and there lying, Soon arsene evolves and becomes Satanael, raising it's gun at the platform. Satanael soon speaks 
"For the Will of humanity, begone!"
Soon firing the sinful shell, the platform breaks and instant kills the fighter, the cutscene ends with joker soon turning his back while satanael feathers falls down)

Morgana: The Quick Feline of wind 
Arcana/Confidant: Magician
Persona: Zorro
Weapon: Sabre/Swords
playstyle: Rushdown fighter but also a pseudo-dodger, relying on his quick hits and combat, morgana can focus on preventing the opponents from taking a few hits. 
Instant kill: Z for Zorro! (Morgana soon summons zorro and enemies hit with lucky punch are suddenly caught in the tornado, there morgana and zorro soon blitz through them with each slash, it ends with morgana soon raising his sword in the air and zorro raising the rapier, both formed the Z as the tornado explodes alongside the opponent)

Ryuji Sakamoto : The Yellow-haired bruiser skull rider
Arcana/confidant: Chariot 
Persona: captain Kidd
Weapon: Spiked bat
Playstyle: Ryuji fights dirty but also fights fair and square, a rushdown with a all-rounder stats, just be careful if he's swinging his bat like that
Instant Kill: Black Flag William (Ryuji soon prepares the homerun and enemies caught in the attack are stunned, Ryuji summons captain kidd and he shouts "BLAST THEM AWAY! CAPTAIN KIDD!" as ship's cannons soon fires, hitting enemies a lot of times before ending with a black gunpowder barrel explosion)

Ann Takamaki: The Seductress fashionista 
Arcana/Confidant: Lovers
Persona: Carmen
Weapon: Whip
Playstyle: Gimmick fighter that focuses on burning enemies or stunning them with charm
Instant kill: Killer rose (Carmen roses appears as it stretches outward, enemies caught are then lifted up with ann soon preparing her punishment, she whips her enemies a lot of times before ending with a flaming pillar of love)

DLC Characters.

Yusuke Kitagawa / Fox (The Gorokichi painter)
Persona: Goemon
Weapon: Katana
Confidant/Arcana: Emperor

Makoto Nijima / Queen (The School president fist of fury)
Persona: Johanna 
Weapon: Knuckles
Confidant/Arcana: Empress

Haru okumura / Noir (The Noir with a deadly and cute mindset)
Persona: Milady
Weapon: Axe
Confidant/Arcana: Empress

Goro akechi / Crow/Black Mask (A Pretender of good and evil)
Persona: Robin hood/Loki/Hereward 
Weapon: Laser sword / Jagged blade
Confidant/Arcana: Justice

Yoshizawa Kasumi/Sumire / Violet (The Girl who ballet trances the audience)
Persona: Cendrillon 
Weapon: Rapier
Confidant/arcana: Faith

Sophie / Sophia (The Girl on the app)
Persona: Pandora
Weapon: Yo-yo's
Confidant/Arcana: Hope

Zenkichi hasegawa / Wolf (He condemns evil and hunt the traitors)
Persona: Valjean
Weapon: Greatsword
Confidant/arcana: Apostle

Makoto Yuki / The messiah (Blue haired boy of tatsumi port island)
Persona: Orpheus/Messiah
Weapon: Short swords
Arcana: Fool/Universe/World

Tatsuya suou / Maya amano (The Eternal sinner and the Oracle of the moon)
Persona: Apollo / Artemis
Weapons: swords (Tatsuya), guns (maya)
Arcana: Sun (Tatsuya) / Moon (maya amano)

Stages: Shujin academy, Mementos, Fateless Prison, Path of qliphoth *Exclusive stage*, and Mementos - Eden