True Name: Nemo/Triton Class: Rider Gender: Male Height: 150cm Weight: 40kg Source: Greek Mythology, "Twenty Thousand Leagues Under the Sea" Region: Europe, India Alignment: Chaotic Neutral, Heaven Likes: The free sea, the form of a nautilus shell, playing music, building hideouts, pudding Dislikes: Invasion, bullying the weak, stowaways, rats First person: I (soft, polite). As a fusion of Triton—who was honest, kind, and loved by all—and Captain Nemo—a man of conviction and the embodiment of action—his personality deviates slightly from both originals (though it leans closer to Nemo). According to Sion, he is "even more shy than I am" (though Sion in this work is quite cheerful...). He is blunt and taciturn toward everyone, but will exchange words with familiar faces as necessary. He possesses an extremely high level of professionalism as a captain in charge of a ship, and is a dedicated worker who will defy even his Master if he judges the ship's safety to be at risk. Whether it is his duty as a captain or otherwise, he handles assigned tasks energetically. In Part 2, Chapter 4, Section 1, he pointed out from a user's perspective that "this vessel clearly lacks comfort," arguing that "protecting the health of the crew is also the job of a first-rate captain." Consequently, no matter how virtuous a Master may be, he is merciless toward those who cannot weigh the big picture or safety. Conversely, if he realizes his own judgment was wrong or too stubborn, he has the integrity to frankly admit it and apologize. Though eccentric, his attitude is also a mask, suppressing his emotions as a captain entrusted with everyone's fate. While he maintains his "professional" demeanor toward others, he shows a cheerful and boisterous "man of the sea" side during key moments like sailing, and his tone shifts to match. This persona aligns with the general public image of Captain Nemo, and some of his battle voices are strangely high-tension; that is his "true" self. Due to his origins, he has a deep attachment and obsession with the sea, and his speech is often laced with metaphors involving the ocean and marine life. He also seems to have a very delicate sensitivity toward ships; upon seeing the heavily damaged Shadow Border, he remarked that it was "as painful as the death of coral," that he could "hear it screaming," and that he felt he would "go mad if it wasn't repaired immediately." Furthermore, as his Noble Phantasm lines suggest, he is absolutely merciless toward those who pollute the sea. He also has a side that becomes deeply attached to those he takes a liking to in his heart. This is easy to see in his lines during the Valentine's event. He loves parfaits (though he treats this as a top-secret matter). Master: Ritsuka Fujimaru Strength: C Endurance: B Agility: C Mana: A Luck: A Noble Phantasm: B Great Ram Nautilus: I Am Voyaging, the Nautilus's Great Ram Rank: A Type: Anti-Sea Noble Phantasm Range: 2–70 Maximum Targets: 1 enemy (Game Material) / 200 people (Book Material) "Very well, it's time to show you I'm serious." "Set sail!" "Target spotted!" "Directly above us!" "Internal combustion engine, maximum! Life support, maximum! Omelet, OK!" "Alright, rapid ascent! We are the trident of the Sea God! 'Great Ram Nautilus'!!" This is the submarine "Nautilus" itself, his beloved ship. It is the crystallization of super-technology dreamed of by people—a versatile vessel capable of navigating any sea and weathering any storm. Since a submarine is inseparable from the existence of Nemo, as a Servant he is one with the Nautilus and shares its damage. When using his Noble Phantasm, he transforms into a form centered on the Nautilus (in the animation, he boards it) and charges using the equipped Great Ram. It possesses a special concept that allows it to collide with and break through any enemy, no matter how massive (giant squids, massive battleships, etc.), without flinching. While it can be used in places without water (on land or in the air), it has the rare property of significantly increasing accuracy and power if the field is underwater or in the sea.

Though described as clones, their essence is that of "humanoid terminals adjusted to operate independently by subdividing and personifying Captain Nemo's abilities and 'what-if' possibilities." Deploying or retracting them is at the discretion of the original Captain. Conversely, he cannot control their individual wills, but they can share information with each other. From descriptions in the story, they appear capable of independent operation and information sharing even over considerable distances. However, because each series has a distinct personality despite sharing information, Nemo's true feelings or secrets are sometimes exposed through other members of the Nemo Series. Nemo Marine Nemos who serve as the crew of the Nautilus. All are male. This specific unit is the only one that appears in multiple numbers at once. Their personalities are generally boisterous and childish. In battle graphics, they assist in attacks under Nemo's direction. Nemo Bakery AThe chef Nemo in charge of the galley. Female. She has a bright and caring personality. Although her name is "Bakery," she can cook dishes other than bread and Western sweets. Nemo Nurse Nemo of the medical staff. At Novum Chaldea, she works in Da Vinci's infirmary. She has a refined and mature personality, but becomes a reliable doctor who rushes in immediately during emergencies to provide swift and precise treatment. Nemo Professor The scholar Nemo. A staff officer whose primary duties are exploration during landings, academic analysis, and strategic planning. An eccentric girl who never stops making bizarre remarks. Nemo Engine The engineer Nemo. Female. An older-sister type with a rough way of speaking who is always stationed in the ship's engine room. A hard worker who fixes the engine while snapping every time it's strained by reckless sailing. She appears to be in charge of not only the maintenance and repair of the Nautilus's engine, but also its control.