Wriothesley (, ) is a fictional character in the video game Genshin Impact, developed by miHoYo. He first appeared in version 4.1 of the game in 2023 and became playable later that year. He is the warden of the Fortress of Meropide, an underwater prison in the fictional nation of Fontaine. Orphaned as a child, Wriothesley murdered his adoptive parents as a teenager after they abused and trafficked children. After being imprisoned for the crime, he gradually amassed influence and ultimately became the prison's administrator, reforming it and receiving the title of "Duke". In the game's story, he meets the protagonist Traveler and their guide Paimon while within the prison, and later joins the people of Fontaine, the Traveler and Paimon in confronting a prophesied flood crisis.

Elements of Wriothesley's character design were inspired by Cerberus, the three-headed dog from Greek mythology that guards the entrance to the underworld, while his appearance also incorporates traits associated with prison guards. Wriothesley's character design was received positively. Players and critics also praised the multifaceted personality he displays in the story, and the character inspired a large amount of fan-created works. He introduced a new style of gameplay to Genshin Impact, and his combat mechanics and overall strength were received well, although he has limitations when facing groups of enemies.

Design and voice acting In the game, Wriothesley is the warden of Fontaine's underwater prison, the Fortress of Meropide, and holds the title of "Duke". He combines the authority of an administrator with a more approachable and friendly side. His design incorporates numerous dog- and wolf-like elements. The name of his Constellation, "Cerberus", derives from the three-headed dog of Greek mythology that guards the entrance to the underworld, reflecting his role as the guardian of the Fortress of Meropide. His animal-ear-like hairstyle and dog-head-shaped emblem likewise evoke Cerberus. He is shown as a strong, handsome, and taciturn young man with tousled short hair, a red-and-black coat, and a pair of metal handcuffs hanging from his waist. In combat, he wears mechanical gauntlets on both hands as his weapons.

Wriothesley is voiced in Chinese by Liu Beichen, in English by Joe Zieja, in Japanese by Daisuke Ono, and in Korean by Kwon Chang-wook. Ono had previously voiced Jotaro Kujo, the protagonist of JoJo's Bizarre Adventure. Both JoJo and Wriothesley are close-range fighters who attack opponents with their fists, and Ono incorporated Jotaro's "ora ora" line into Wriothesley's battle dialogue as an Easter egg. In an interview, Zieja said that the first scene he recorded was one in which Wriothesley describes himself as a duke who needs no reason to kill someone, leading Zieja's initial impression of him to be that he was a ruthless figure. Zieja, who had served in the United States Air Force before becoming a voice actor, drew on officers he had met during his service when developing Wriothesley's vocal performance.

Appearances Wriothesley is the warden of Fontaine's underwater prison, the Fortress of Meropide, but he was once one of its prisoners. Orphaned as a child, he discovered as a teenager that his hypocritical adoptive parents had taken in orphans only to abuse and traffick them. He killed them, freed the other children, and escaped the household, for which he was arrested, convicted and imprisoned. In the dangerous and chaotic prison, Wriothesley endured while building wealth, strength and influence through underground boxing matches, also known as Pankration. After many years, he had gained considerable prestige among the prisoners, but the prison's administrator took advantage of this to seize all of Wriothesley's wealth. Wriothesley challenged him to a duel and when the administrator fled, he took control over the prison and became its new overseer. After taking over as warden, Wriothesley introduced a series of reforms and established a more orderly system within the prison. In recognition of his effective administration, he was granted the title of "Duke".

In the game's main storyline, the Traveler infiltrates the Fortress of Meropide by posing as a prisoner at the request of Neuvillette, Fontaine's chief justice, in order to investigate the disappearance of the Fatui Harbinger Tartaglia. The Fatui are one of the game's primary antagonistic factions. At the prison, the Traveler and Paimon meet Wriothesley. They join Fatui siblings Lyney and Lynette, who are conducting their own investigation, uncover a number of secrets within the prison, while Wriothesley quietly guides their actions to suit his own purposes. When pressed, he confirms that Fontaine faces an imminent disaster: rising water from the Primordial Sea threatens to flood the nation. He shows the Traveler a protective gate hidden in the restricted area of the prison, as well as a vessel which he build and named after himself, which his people had been researching and constructing. As the pressure from the Primordial Seawater continues to rise, the protective gate fails. With the assistance of Wriothesley's longtime friend Clorinde, Wriothesley uses his powers over Cryo to hold the Primordial Seawater back temporarily until the Traveler brings Neuvillette to the scene, allowing him to seal it again. After the immediate crisis is resolved, Wriothesley allows the Traveler to enter and leave the Fortress of Meropide freely and grants them preferential treatment within it. When Fontaine's prophecy later comes to pass, he leads a rescue effort aboard the vessel Wriothesley, saving Fontaine's residents from the flood. After the disaster subsides, he declines an interview with Charlotte, a notable local journalist, but allows her to take photographs inside the fortress.

In Wriothesley's Story Quest, the Traveler encounters a man named Faissolle in the Fortress of Meropide after he loses his hat. After returning it, Wriothesley explains that the man belongs to an organization called the Beret Society, a mutual-aid group that claims to rehabilitate criminals. Soon afterward, guards confiscate a shipment of contraband containing a black gemstone capable of bringing back negative memories, which Wriothesley takes into custody. He brings the Traveler to meet Dourgie, the group's leader. Although its members appear upbeat and well-adjusted, Faissolle becomes visibly nervous when he appears again. Wriothesley deliberately leaves the gemstone behind as a test and suggests that the Traveler and Paimon return secretly to observe the group, where they find its members acting fearful and submissive, confirming that something is off about them. Wriothesley reveals that he had already suspected Dourgie and intended to investigate discreetly, but the Traveler and Paimon's arrival disrupted his plans. He therefore used the black gemstone to gain the group's trust, explaining that, as Duke, he could not simply ignore the rules and order a search without cause. That night, Faissolle's girlfriend, Avice, comes forward to confess what she knows, but is stopped by Dourgie. Wriothesley later discovers that a hairpin Avice left behind contains a hollow needly capable of absorbing the fear-filled liquid within the gemstone. An examination revealed puncture wounds on the heads of every Beret Society member, proving that Dourgie had been injecting them directly in the brain to control them through fear. Wriothesley leads a raid on Dourgie's hidden underground base, rescues the people being held there, and defeats Dourgie and the Beret Society guards. When Dourgie argues that criminals can only be made to submit through punishment, Wriothesley recalls the trauma of being deceived by his adoptive parents as a child and angrily rebukes him. He says he will suspend the rule against administering vigilante justice to prisoners and intends to punish Dourgie in the same way. Two days later, he meets the Traveler in the prison cafeteria and speaks more openly about his childhood. When Faissolle and Avice ask to hold their wedding in the Fortress of Meropide, he gladly agrees, reflecting that trust is better than obedience.

Gameplay Wriothesley is the game's first five-star Cryo character to use a catalyst in combat, and serves as a close-range attacker who fights with mechanical gauntlets in the lore. His Normal Attacks deal Cryo damage, while his Charged Attack becomes more powerful under certain conditions and restores his health. His Elemental Skill makes him dash forward a short distance, strengthening his attacks while consuming his health, and his Elemental Burst deals area-of-effect Cryo damage to enemies.

Promotion Wriothesley first appeared in a preview trailer for Fontaine, which was released on July 3, 2023. On August 14, miHoYo revealed his character design and abilities, while also announcing that he would become playable in the future. He formally debuted in version 4.1 of the game, which was released on September 27. miHoYo then released a character story teaser titled "Necessary Procedure" on October 11, showing Wriothesley protecting the daughter of a criminal while arresting him. On October 12, a web event was launched in which players were asked to assist Wriothesley with various investigations inside the Fortress of Meropide. The web event was followed by the release of a gameplay teaser called "Art of Improvisation" on October 16. The next day, he became playable alongside his signature weapon, "Cashflow Supervision". On the same day, miHoYo released a video analyzing his combat abilities. At launch, some of his actions had a small chance of malfunctioning under certain conditions. miHoYo apologized and issued bug fixes on October 19 and November 8.

In September 2025, Samsung Electronics held a pop-up store at its Samsung Store location in Hongdae, Seoul, South Korea, reimagining Wriothesley as a rock star. The venue featured a large LED display case that played character-specific voice lines when visitors pressed a button. On the second floor, visitors could wear Galaxy Buds to listen to a band arrangement of Wriothesley's theme music, creating an immersive "Fontaine rock concert" atmosphere. Access to the merchandise area was limited to customers with reservations; it sold fourteen exclusive items and offered purchase-based bonuses like shopping bags, transparent photo cards, and holographic tickets. The event also included a paid minigame area, where visitors who completed three task-based minigames could receive three different photo cards as rewards. On two days, a Wriothesley cosplayer appeared for a total of nine photo sessions. According to Asia Today reporter Kim Dong-wook, one attendee said that they had spent more than and did not regret it at all, while some fans traveled from Busan specifically to attend. Kim characterized the pop-up store as turning Wriothesley into a commercial intellectual property symbol with musical, fashion, and performance appeal, creating a highly popular in-person experience where players were both spectators and participants.

Reception