Diluc

Biodata

Power Progression

Background / History

Diluc formerly served as the Knights of Favonius’ Cavalry Captain. Noelle describes him as their youngest and most outstanding knight, while spectators recall him as their youngest and strongest cavalry captain. The circumstances behind his departure are not explained in the supplied chapters, and he refuses to discuss that period when Jean calls him her senior 5 6.

He owns the Dawn Winery, whose business spans Teyvat, and is identified by Ganyu as Mondstadt’s biggest wine merchant. Despite openly disliking the Knights’ methods, he independently protects Mondstadt as the Darknight Hero 4 5.

Personality

Diluc is reserved and uncomfortable with public acclaim. He dismisses the Darknight Hero stories as idle rumors, dislikes the title itself, and retreats toward the winery when Mondstadt’s residents enthusiastically celebrate his exposed identity. Paimon’s replacement nickname, “Man of Justice,” likewise prompts him to ask viewers not to tag him 5 6 8.

His distrust of the Knights does not diminish his commitment to Mondstadt. He insists on his own methods, uses intimidation and flames when interrogating an Abyss Mage, and arranges an elaborate alibi to keep the Knights from interfering with his operations 8 10.

His exchanges with Kaeya reveal a more openly teasing side. He mocks Kaeya’s punishments, claims to have beaten him before, and celebrates his magical-girl performance by offering free wine and overseas deliveries 7 20 41 42.

Abilities & Skills

Greatsword Combat

• Nimbly evades a Cryo Abyss Mage’s icicles, breaks out of an ice pillar, and kills the mage with one slash 6.
• Defeats a horde of Hilichurls and Abyss Mages on the bridge outside Mondstadt, finishing the battle with a final burst 10.
• His displayed skill prompts Tartaglia to seek a sparring match; Kokomi considers him strong enough to hold a general’s rank in Inazuma 6.

Fire Release: Great Dragon Fire Technique

• Uses rapid hand seals and breathes out an enormous fire dragon; his flashing Vision adds two more 7.
• Sends the dragons toward a chosen target, producing powerful explosions 7.
• Receives the technique’s knowledge as though he had trained for years rather than needing conventional practice 7.
• Reports some exertion but no observed side effects. He believes physically active people or Vision holders could use it multiple times 7.

Intelligence Gathering and Planning

• Uses the Dawn Winery’s intelligence network to locate an Abyss Order stronghold 8.
• Fills Angel’s Share with winery personnel who corroborate his false alibi while he fights outside the city 10.
• Identifies Tartaglia as the Harbinger codenamed Childe and La Signora as the Eighth Fatui Harbinger 16 23.
• Assigns his network to gather information for the group’s effort to collect Stormterror’s tears 35.

Interrogation

• Helps Lumine capture an Abyss Mage and uses flames to torture it for information 8.
• His methods frighten viewers and put him first on Paimon’s list of people not to antagonize 8.

Equipment / Weapons / Items

• Greatsword — Used against Abyss Mages and the monsters attacking Mondstadt 6 10.
• Vision — Assists his newly acquired fire technique by generating two additional fire dragons 7.

Relationships

• Jean — Former junior in the Knights and an ally in Mondstadt’s defense. She recognizes his independent protection of the city and asks him to trust the Knights more; he rejects her continued use of “senior” 5 8 35.
• Kaeya — Frequent sparring partner in verbal exchanges. Kaeya mocks his fighting style and discovers his vigilante alibi, but promises not to inform the Knights. Diluc repeatedly enjoys Kaeya’s livestream misfortunes 7 10 11 32 41.
• Lumine — Collaborator against the Abyss Order. She helps capture an Abyss Mage, conceals his absence from the tavern, and later joins the Stormterror preparations 8 10 35.
• Paimon — Gives him the nickname “Man of Justice” and helps preserve his secret in the broadcast story. His interrogation methods leave her wary of provoking him 8 10.
• Charles — Tavern bartender whom Diluc directs to work overtime after his identity is exposed and to have performers learn a song featured by the livestream 5 12.
• Venti — Owes Diluc 200,000 Mora and sings at Angel’s Share to repay the debt. Later works alongside him on the Stormterror crisis 13 35.
• Ganyu — Has met him twice through business and explains the scale of his wine trade to the elite chat 4.

Story Role / Major Arcs

Darknight Hero Broadcast

• Public exposure: The first livestream centers on the Darknight Hero. Yoimiya correctly identifies Diluc, revealing his secret protection of Mondstadt to viewers across Teyvat 1 5.
• First power reward: Randomly selected to guess his own future nickname, he chooses “Man of Justice” and wins the Great Dragon Fire Technique 7.
• Abyss Order investigation: In the broadcast story, he locates an enemy stronghold, interrogates an Abyss Mage with Lumine, and rejects the Knights’ attempt to take over the case under the pretext of protecting him 8.
• Tavern alibi: Lumine and Paimon distract Huffman while Diluc defeats monsters outside Mondstadt. Winery personnel cover his absence, but Kaeya sees through the arrangement and agrees to keep quiet 10 11.

Livestream Aftermath

• Eula reports that the public display of Diluc’s strength, together with Jean’s new artifact, has helped make the area around Jingfu Harbor more peaceful 13.
• The Abyss Order becomes reluctant to send Stormterror against Mondstadt after Diluc grows stronger and Jean gains the Immortal-Binding Rope 14.
• Diluc offers to buy the miniature beam cannon featured in the elite prize draw; its eventual recipient, Beidou, refuses to sell it 27 29.

Stormterror Preparations and Later Participation

• Helps Jean, Venti, Lumine, and Paimon prepare to collect Stormterror’s tears after the group obtains the Holy Lyre der Himmel 35.
• Ties for first on the livestream’s Strength Rankings with three correct answers and no wrong answers, alongside Yae Miko, Yoimiya, Yanfei, Beidou, and Xiao 35.
• Backs Xingqiu’s advice before Chongyun’s correct answer earns him Naruto’s three signature techniques 38.
• Provides free Dandelion Wine at Angel’s Share during Kaeya’s punishment and arranges crates for Komore Teahouse and Watatsumi Island 41.

Notable Quotes

“Idle rumors. Still, I suppose they’re a sign of peace.” 6

“I have my own way of doing things. There’s no need to say anything more.” 8

Trivia

• Angel’s Share introduces drinks named Darknight Hero and Man of Justice after the broadcast; Charles says both sell faster than the tavern can supply them 13.
• After Diluc demonstrates his fire dragons, Charles reports that numerous customers with unpaid drink tabs have come to settle their debts 7.