Da Vinci

Biodata

Feature	Details
Name	Leonardo da Vinci
Alias(es)	Da Vinci; Omnipotent Genius; Universal Man; Little Da Vinci (backup body)
Species/Race	Servant; her backup body is a lower-level Servant with reduced output 85 412
Affiliation	Chaldea Security Organization; later accompanies Li Ye during the Lostbelt campaign 85 418
Occupation/Role	Chaldean advisor, acting Director, magus, engineer, analyst, and operational support 208 409
Status	Active; both her original body and backup body continue providing support after Chaldea's fall 412 516
First Appearance	Chapter 83

Background / History

Sixth Singularity

Da Vinci accompanies Ritsuka Fujimaru and Mash Kyrielight during their investigation of the Sixth Singularity. Her observation of Li Ye fighting Siegfried leads her to question his identity: despite not being a Servant, he can contend with a dragon slayer on equal terms. 83

Using Li Ye's reports and Chaldea's scans, Da Vinci reconstructs the Singularity's anomalies. She determines that Ozymandias replaced the Holy Land with his Ancient Egyptian domain, recognizes the Hermes system as a prototype of Chaldea's Trismegistus, and identifies Li Ye as a human modified with Artoria Pendragon's Dragon Blood. 85 92 97

After Li Ye confirms Tristan's identity, Da Vinci concludes that the Lion King is Artoria Pendragon and that her Knights of the Round Table are enhanced by the Holy Grail of Arthurian legend. 98 109

Cooperation with Li Ye

Da Vinci directly confronts Li Ye about his origins, deducing that he is not native to the Singularity because he acts with knowledge of humanity's future. Li Ye confirms that he came from 2016–2017, and Da Vinci explains that ordinary Spiritron Transfer cannot remove a living person from a Singularity. 115

Their exchanges become mutually beneficial: Da Vinci receives detailed intelligence on the Singularity, while Li Ye learns basic magecraft, including Projection Magic and Reinforcement. 116 135 She also assesses his damaged Shining Sword of Ruin, criticizing its crude construction and warning that it has little remaining combat use. 127

Da Vinci remains wary of Li Ye after he acquires Rhongomyniad. She recognizes that removing the Holy Lance from its proper place in history may have altered Human Order, and fears he could replicate the Lion King's plan to isolate an era from the planet. 208 209 210

Chaldea's Fall and the Lostbelts

During the takeover of Chaldea, Da Vinci prioritizes Ritsuka and Mash's escape. Li Ye keeps Da Vinci behind, stating that he needs her intellect and technical assistance; she remains with him as Chaldea's surviving members flee. 412

Da Vinci assists Li Ye in preparing a Lostbelt-compatible Holy Grail system for wish granting and Heroic Spirit summoning. Although she cannot stop his plans, she recognizes that her expertise accelerates their implementation. 418 419

A child-form backup body, Little Da Vinci, awakens after the connection to the original is severed. It retains Da Vinci's memories up to that point but has reduced energy consumption and reduced output; it subsequently supports Ritsuka's group aboard the Shadow Border. 412 464

China Lostbelt Investigation

While traveling with Li Ye through the China Lostbelt, Da Vinci surveys the orbital Mega-structure, identifies the First Emperor's technological supremacy, and investigates the Immortal Arts underlying Great Qin's machinery. 444 446 449

Her analysis of Ying Zheng's research reveals that he seeks to create an artificial Grand Class Spirit Core: an immortal, spiritron-based existence equivalent in “height” to a Grand Class Servant. Da Vinci later helps organize the resulting data for Chaldea's use. 457 464 465

Appearance

Da Vinci's primary body is depicted with blue hair and a beautiful, composed appearance. Her backup body manifests as a child-sized version carrying a magic staff. 115 412

• Blue hair — visible during her conversation with Li Ye. 115
• Little Da Vinci — child-form backup body with reduced capabilities and output. 412
• Magic staff — carried by the backup body during its first appearance. 412

Personality

Da Vinci is confident, playful, and unabashedly proud of her own genius. She introduces inventions theatrically, calls attention to her “masterpieces,” and treats difficult technical problems as opportunities for discovery. 94 362

Behind this flamboyance, she is perceptive and cautious. She persistently investigates inconsistencies in Li Ye's story, monitors the danger posed by his power, and remains concerned about the consequences of allowing an uncontrollable present-day human to move freely through society. 115 208 360

She is also pragmatic and protective of Chaldea's personnel. During the attack on Chaldea, she places Ritsuka and Mash's survival above her own escape, then accepts the necessity of working with Li Ye to gather information and preserve a path forward. 412 414

Abilities & Skills

Analysis and Deduction

Da Vinci rapidly interprets magical, historical, and technological evidence, often turning incomplete observations into actionable conclusions.

• Identified Ozymandias's Egyptian domain as the reason Chaldea arrived in an overwritten thirteenth-century Holy Land. 85
• Recognized Hermes as a prototype of Chaldea's Trismegistus and connected it to the Atlas Institute. 92
• Deduced Li Ye's Dragon Blood modification and linked Tristan and the Lion King to the Knights of the Round Table. 97 98
• Determined that Ying Zheng's research could produce an artificial Grand Class Spirit Core. 457

Magecraft Instruction and Theory

Da Vinci possesses advanced magical knowledge and can explain, teach, and apply magecraft in practical situations.

• Taught Li Ye Projection Magic and the basic spell Reinforcement. 116 135
• Explained the nature and rarity of True Ether in the modern age. 92
• Evaluated the structural flaws and remaining capacity of Li Ye's Shining Sword of Ruin. 127
• Understands Spiritron Transfer limitations and the effects of altered historical causality. 115 209

Engineering and Craftsmanship

Da Vinci creates magical tools, vehicles, reconnaissance equipment, and large-scale systems despite limited resources outside Chaldea.

• Constructed magic-powered wooden vehicles and the Sand Sea Set of protective goggles. 94
• Built upgraded Winged Sphinx transports using materials from Ozymandias's domain. 138
• Produced drones and an off-road vehicle for China Lostbelt reconnaissance. 444
• Disassembled Great Qin's puppet soldiers to investigate their Golden Cores and Immortal Arts construction. 448 449
• Helped establish a Lesser/Greater Holy Grail-linked summoning system in the Russia Lostbelt. 418 419

Chaldea Operations

Da Vinci serves as a central operator and logistical coordinator for Chaldea and its surviving personnel.

• Assesses Servant reactions, battlefield conditions, and enemy capabilities during field operations. 96 97
• Operates the Shadow Border's systems and warns its crew of encircling Slaughterers. 413
• Works with Holmes to extract and organize data required for artificial Grand Class Spirit Core research. 464
• Limitation: Little Da Vinci has lower energy consumption but reduced output compared with the original body. 412

Equipment / Creations

• Winged Sphinx — transport craft; a second-generation model is built with materials from Ozymandias's domain. 94 138
• Sand Sea Set — wooden goggles distributed for desert travel. 94
• Magic-powered wooden vehicle — capable of operating at up to sixty kilometers per hour. 94
• Reconnaissance drones — used to survey the China Lostbelt's wheat fields, metropolis, and orbital Mega-structure. 444
• Off-road vehicle — a reduced-scale vehicle project enabled by Da Vinci's craftsmanship and Li Ye's Imaginary Numbers. 444
• Magic staff — carried by Little Da Vinci. 412

Relationships

• Li Ye — Initially treats him as an anomaly requiring investigation; later becomes his indispensable technical partner while continuing to question the danger of his ambitions. 115 360 412 418
• Ritsuka Fujimaru — Chaldea colleague whose survival Da Vinci prioritizes during the fall of Chaldea; Little Da Vinci continues supporting Ritsuka aboard the Shadow Border. 412 413
• Mash Kyrielight — Chaldea teammate whom Da Vinci supports through field analysis and evacuation efforts. 83 96 412
• Sherlock Holmes — Analytical collaborator; the two work together on Chaldea projects and the artificial Grand Class Spirit Core data. 360 464
• Ozymandias — Recognizes Da Vinci as an outstanding sage, while Da Vinci studies his domain and the Hermes system within it. 90 92
• Ying Zheng — Technological rival and negotiation partner whose Immortal Arts research Da Vinci investigates alongside Li Ye. 446 456 457