Francis Scott Key Fitzgerald/Synopsis

Armed Detective Agency vs. Port Mafia Arc
Fitzgerald makes his first appearance contacting Dame Agatha Christie, showing that he is the one who hired Port Mafia to catch Atsushi, and mentioning that his organization will claim " The Promised Land".

The Guild Arc
He reappears at the Armed Detective Agency arriving together with Montgomery and the Senior secretary on a helicopter. After introducing himself and boasting about his resources, he is asked by the President whether the rumor about hiring the Mafia was true. He calmly answers the truth while belittling said organization for his failure. Then later offers a great amount of money to the President as a proposal in order to buy the so-called "Skilled Business Permit," only to be rejected. Being angered by this, he proceeds to threaten the Company, then leaves together with his subordinates. He's seen again when he is practicing skeet-shooting on board of his extravagant cruiser together with Steinbeck, both of them talking about the Agency's whereabouts. Fitzgerald is pleased by this, stating how hunting is no fun if the prey is a sitting duck. Steinbeck reports about the Port Mafia and mentions in terms of operation scale, they are more of a threat. Steinbeck hands Fitzgerald a Revolver gun, which he gives a stern look to, and mentions how when he was younger he had worked for a gun of that model. In the end, he still didn't reach enough money to buy one. Through uncertain means, he killed four people and then mentions how he now owns the manufacturer for that gun. He mentions how wealth is a nightmare and how with everything we covet, we lose a part of that dream in obtaining something. He then makes use of his strength to break every plate on the air just by throwing the bullets with tremendous strength with his bare hands and declares his determination to take over Yokohama.

In the Moby Dick, Fitzgerald was approached by Louisa May regarding another strategy proposal. He then grabs the document saying he will read it and asks the location of their next mission site. However, Louisa May advises him to stay inside now that the cruise ship has fallen. Fitzgerald responds that the Guild site is wherever he was and walks away.

While Atsushi is outside worrying about the whereabouts of Kyōka, Fitzgerald appears before him. Atsushi tries to punch however Fitzgerald manages to stop him. Atsushi manages to land a kick on Fitzgerald however he counters attacks making Atsushi injured. Suddenly, Kyoka appears them and manages to get Atsushi away from him.

After finding Kyoka and Atsushi, Fitzgerald together with Herman Melville and Mark Twain manages stops them from escaping. Fitzgerald then captures Atsushi and disappeared. Fitzgerald visits Nathaniel Hawthorne in the hospital after his fight with Akutagawa. Hawthorne tells him that he will no longer depend on Fitzgerald and will bring back his honor himself. After going back to the Moby Dick, he approaches Louisa May regarding the strategy proposal, however, Louisa May warns him that the plan can cause a lot of collateral damage. Fitzgerald then proudly claims that all of the assets there are his belongings including the people and he has the right to protect them.

Fitzgerald talks with Atsushi and declares that they are looking for a book. Fitzgerald proceeds to tell Atsushi that there is only a single copy of it in the world and some ability users said that it foresaw that the book would be sealed in Yokohama. He then reveals that Atsushi is the guidepost for the book and the reason why he brought Atsushi in the Moby Dick is to prevent him from turning into ashes unlike the rest of the city. He then tells Atushi their plan of burning the city to make it easier for them to find the book and proceeds to show Atsushi Q's doll. Atsushi then surrenders and tells Fitzgerald that the Agency will help them. Fitzgerald then replies that they should form cooperative teamwork and proceeds to tear Q's doll.

Fitzgerald is seen talking to his wife Zelda on the phone. He then shows Atsushi who infiltrated the Moby Dick after escaping, the control terminal for the Moby Dick. He then proceeds to tell Atsushi his secrets on how he got it his far: first, is that to not leave anything for others to handle, and second is to don't let the values of others affect you. He then places the control terminal at a chair and tells Atsushi that they will both run towards it at the count of three and the winner can do anything about the Moby Dick. However, if Fitzgerald wins, Atsushi will help him in his search for the book. Fitzgerald starts counting and attacks Atsushi at the count of three. After getting the control terminal, he says that his third secret is that it's easy to predict the behavior of anyone when given an opportunity. He then introduces his ability, "The Great Fitzgerald".

He then proceeds to attack Atsushi. While restraining Atsushi, Akutagawa attacks him. He then says that strength must be used more meaningfully. He also reveals that he knows Atsushi's past. While the Mody Dick is descending, Akutagawa and Atsushi manage to run. After escaping, Fitzgerald finds them. The three of them are seen at the top of the Moby Dick. Fitzgerald proceeds to tell them that he will be the one who will survive as he strengthened himself with his ability. Fitzgerald engages in a fierce battle with Atsushi and Akutagawa to prevent the Moby Dick from falling in Yokohama.

After a fierce battle, Fitzgerald was defeated by the duo, Atsushi and Akutagawa, and after the battle, he fell from the descending Moby Dick into the sea.

The Guild Aftermath Arc
It was revealed that Fitzgerald had survived the fall, using his $500,000 wedding ring as his last source of power. Louisa May finds him in the slums begging for any amount of money. Louisa May tries to persuade Fitzgerald to come back and lead the remnants of the Guild. Fitzgerald declines, stating how low he's become. He's lost all he's owned; his inheritance, status, and identity. Louisa May continues in trying to convince Fitzgerald to return but is only rebuffed by him again. He eventually departs, leaving Louisa May behind. After a group of criminals tries to threaten Louisa May into giving them the whereabouts of the Guilds inheritance, Fitzgerald arrives to intervene. A fight ensues and Fitzgerald asks Louisa May for the most expensive thing she has on hand to help him power his ability. She agrees if only he'll grant her her request for him to return to the Guild. He agrees and is powered up by Louisa May's inheritance. With the group defeated, the duo then decides to change their plan or strategy in obtaining The Book. Fitzgerald then decides to buy the Secret Services for fifty billion dollars, as it is key in continuing their plans. Although, with limiting funds and no other comrades to help them this doesn't dissuade them, but rather invigorates them to complete their task. The Guild is reborn again as the "Renewed Guild".

Fitzgerald and Louisa May are later seen at their new base in a hovel called Wonderful Manor. They decide on following a strategy to meet a doctor named T. J. Eckleburg who also works as an engineer in Manhasset security company and gets the codes from a useful device of his called Eyes of God. It is described as an automatic individual identification system for security cameras. Fitzgerald also tells Eckleburg he was seen killing his own co-worker, but the latter denies it. Fitzgerald visits Tom Buchanan and offers to clear the name of his employee in exchange of paying 100, 000 dollars upon success. Fitzgerald then proceeds to persuade that it won't be good for their company to have a reputation of having a murderer employee, however, Tom Buchanan refuses and says that the Eyes of God is accurate. Fitzgerald thinks the chairman knows something about the murder. To find the truth, Louisa May soon asks Poe to subduedly approach Ranpo. It turns out the company's chairman, Tom Buchanan, committed the murder, using a ghost image of Eckleberg to hide his identity.

While the ongoing trial for Eckleburg takes place, Eckleburg was found guilty. The trial goes on a break before the jury decides on a verdict. Fitzgerald encounters Buchanan in the hallway and reveals the chairman's plottings. In exchange for not revealing his secrets, Fitzgerald asks Buchanan to give him 400, 000 dollars. Buchanan proceeds to give him a check. The trial finally resumes, while the session is ongoing, Fitzgerald interrupts and plays the recording of Buchanan offering Fitzgerald offering him money. He then shows them the check given to him as evidence and walks away. Therefore, the man was arrested, leaving Eckleburg proven not guilty during a court trial. Thankful, the doctor visits Fitzgerald and finds out that the low-stocked security company is now owned by Fitzgerald himself.

Cannibalism Arc
Fitzgerald appears at a cafe with Dazai as he was asked for help to find Fyodor using the Eyes of God. He then asks Dazai if he knows his true ability to which Dazai responds no.