- “Ah, Arendelle, our most mysterious trade partner. Open those gates so I may unlock your secrets and exploit your riches! Did I say that out loud?”
- ―The Duke
The Duke of Weselton is a dignitary from Arendelle's neighboring kingdom Weselton. However, a running gag throughout the film is that other characters call it "Weasel Town" much to his consternation and annoyance. His title proves he holds great power in his homeland, and on his formal wear, one will notice several badges and medals, indicating a history of significant accomplishment despite his rather meek character. He may also be the most powerful figure in Weselton aside from the ruler itself, though they're never mentioned or even alluded to. The Duke also has two burly bodyguards at his disposal, though they rarely speak and usually stand by the diminutive royal's side to protect from any and all harm. Even so, they do find their boss' character rather odd, considering their facial expressions during their introduction on Elsa's coronation day.
In relation to Arendelle, the Duke of Weselton controls the trading business between the two kingdoms, and notes that he's Arendelle's closest partner in trade. He's likely the closest visiting dignitary in the kingdom during Queen Elsa's coronation judging by his prominence throughout the events of the film.
- What the Duke of Weselton lacks in stature, he makes up for in arrogance and showboating. He’s determined to get close to the new queen—that is, until Elsa’s magical secret is revealed. Then he’s the first to call her a monster and try to turn her own kingdom against her—anything that might help him exploit Arendelle’s tradable goods.
Contrary to popular belief, the Duke of Weselton is in no way heartless or evil. He is, however, heavily pompous, ignorant, and greedy, though it's portrayed in a humorous manner. Though invited to Arendelle for the coronation of Queen Elsa, the Duke was far more interested in exploiting Arendelle's tradable goods, as he's the representative of Weselton, Arendelle's former trade partner. He's also extremely interested in Arendelle's history, wanting to know why the castle gates were locked for so many years, and why castle grounds were off limits to outsiders, showing a nosy side of the dignitary. The Duke is a very greedy, bold faced person who often resorts to gaining the trust of others by exploiting his supposed "charm".
The Duke's most striking trait is his cowardliness and irrational attitude. Whenever even the slightest oddity occurs, he'll go into a panic, relying on his bodyguard brutes to protect him. He also has a hatred of magic and "sorcery", reason being he finds it to be highly dangerous, explaining why he was so hostile towards Elsa after her powers were revealed at the coronation ball. His fear of magic and the mysterious power it holds is what leads him to perform his only immoral act, which was ordering his thugs to find and kill Elsa, hoping her death would result in the eternal winter curse she accidentally caused to be lifted.
However, despite his flaws, the Duke does have a heart to some degree. He's shown to care for the safety of others, besides himself, as seen when the dastardly Prince Hans claimed Princess Anna was killed by Elsa, the Duke finding the news to be immensely shocking, especially considering the princesses' family ties. Not only that, his negative actions can be considered justifiable, as they were performed out of complete fear, rather than bloodlust or selfish gain. His claims that Elsa was a monster were a result of him nearly being killed by her magic and his conspiracy to have Elsa assassinated was for the purpose of ending winter (as he assumed that was the only way).
The Duke of Weselton is not a villain, but merely a person whose fear, stubbornness, and ill temper drives him to perform antagonistic acts.
The Duke is a short and slender man with pink skin, a large pointed nose, blue eyes, small circular glasses, a gray mustache above his lips, gray hair on the sides and back of his head, and a gray toupee on the top of his head.
The Duke's attire is a dignitary uniform, consisting of a dark blue coat with gold lining, wavy patterns on the collar, a red shirt underneath, medals on the right side of his coat, a red sash hanging diagonally from his left shoulder, epaulets with tassels, red cuffs at the end of his coat's sleeves, white gloves, gray pants, and black boots.
The Duke of Weselton is first seen with his bodyguards entering Arendelle and nearing the castle gates. The greedy royal proves to be extremely excited, deeming Arendelle his most mysterious trade partner, and that he greatly looks forward to unlocking its secrets and exploiting its riches. However, he accidentally says this out loud to his guards. Along with the other dignitaries, the Duke attends Elsa's crowning coronation as well as the ball thrown in honor of her first night as queen. Anna and Elsa's majordomo Kai introduces the snooty duke, which is when the short royal offers Elsa her first dance as queen, claiming he should have the honor being their closest partner in trade. Elsa rejects the offer politely, but volunteers Anna, to which the Duke agrees to nonetheless. Though he believes otherwise, he's a terrible dancer, constantly stepping on Anna's toes and making a complete fool out of himself. The entire event was merely a chance to become closer to the two princesses, hoping a close relationship would further enhance his trading business with Arendelle. In the middle of his routine, he questions the princess as to why the castle gates were closed for so many years, to which she nervously claims ignorance on the situation.
Not too long after the comedic scene, Anna and Elsa get into an argument, and the drama causes Elsa's secret power over ice and snow to be revealed. The fearful Duke calls her out, claiming it to be dark magic/sorcery, and orders his men to capture her the moment she flees, though he and his goons were nearly killed by an accidental blast caused by the queen, resulting in the Duke calling her out as a monster. Anna, the visiting Prince Hans, and the Duke follow after the queen, who escapes into the mountains, accidentally casting a powerful curse over Arendelle, putting it into an eternal winter. It begins to snow eerily throughout the land, causing the citizens to worry, though the Duke immediately becomes irrational, panicking, albeit humorously. He then suspects Anna to have powers as well, but the princess denies and explains that Elsa means no harm. The stubborn Duke finds it hard to believe, as she nearly killed him with her magic during the chase. However, to free the land from the curse, Anna volunteers to go after the queen. The Duke immediately agrees, and Anna departs, leaving her fiancé, Hans, in charge.
Later on, back in Arendelle, things have become worse with the snow having become ice, freezing the entire kingdom, and the living conditions become unbearable for the citizens as, due to the curse overcoming the land in the middle of summer, no one is prepared for the harsh winter weather that's arrived. Hans and the royal guards are busy giving away free cloaks and other necessities for the kingdom's inhabitants who are struggling to survive, much to the Duke's dismay. The Duke scolds Hans on his actions, not wanting the prince giving away any of Arendelle's tradable goods, instead wanting to take action against Elsa, believing Anna's merely conspiring with the former to doom the land. However, the Duke is soon forced into silence when Hans snaps at him, threatening the Duke with his power to have him arrested for treason. Disgusted by Hans' claims, the Duke's silenced until Anna's horse returns alone. Hans feels the princess is in danger, and asks volunteers to journey to Queen Elsa's palace with him to find her. The Duke volunteers his bodyguards, and secretly orders them to eliminate Elsa should they find her, believing her death would end the winter.
With Hans in charge, the bodyguards journey to Elsa's ice palace where they ignore Hans' orders to bring no harm to the queen and barge into the icy walls, immediately taking action. However, soon enough, Elsa gains the upper hands and uses her abilities to battle the duo, nearly killing them until Hans intervenes. Even so, the Snow Queen is captured and imprisoned. Meanwhile, in the castle parlor, Hans decides he'll go back out in an attempt to find Anna, but one of the dignitaries suggests he stays behind, as he's all Arendelle has should Anna fail to return. Just then, however, she does, and desperately asks Hans to kiss her, prompting the Duke and the others to leave the room, giving them some privacy, completely unaware that the prince is actually villainous and power-hungry, planning to betray Anna to steal the throne. Moments later, Hans returns looking distraught just as the Duke declares action be taken once again. He tells them Anna was killed by Elsa, and that they said their marriage vows just before she died in his arms, thus making him king of Arendelle. The claims were lies, but the Duke and other dignitaries are oblivious to the fact, and Hans sentences Queen Elsa to death.
Moments later, Elsa accidentally causes a powerful blizzard to break through as she escapes from her prison cell, and the Duke of Weselton joins the other dignitaries, who rush onto the castle balcony to see what the ruckus was. From there, they are able to witness Anna sacrificing herself to save Elsa from the treacherous Hans and mourn for her death once she freezes solid doing so. Fortunately, she thaws soon enough, as well as the entire kingdom after love is revealed to be the breaker of Elsa's curse. The Duke and the dignitaries all rejoice once peace is restored. The Duke, however, is denied speaking with Elsa about businesses, due to his earlier attempt to have her killed. The Duke tries to claim that he was innocent and a victim of fear, but to no avail, as he and his thugs are sent back to Weselton after being told that they are now cut off from trading with Arendelle by order of Queen Elsa. While being pulled aboard his ship, he is heard insisting that his home is not named "Weaseltown" after being mispronounced once again, though purposely by Kai to annoy him.
- “Believe me, when Arendelle learns the truth about her, they shall side with me.”
- ―The Duke to Helga, about Ingrid
During the King of Arendelle's 70th birthday celebration, the Duke of Weselton visits and becomes enamored with Helga, one of the three Arendelle princesses. Helga presents him to her father, and afterwards, the Duke shares a dance with her. When they begin a courtship, he comes across Helga's eldest sister, Ingrid, who is heir to the throne. After the Duke introduces himself, she moves to find Helga. However, he stops Ingrid and remarks on her incredible beauty. As he makes advances on her, Ingrid rebuffs him, and out of panic, she blasts him away with ice magic. While he is sprawled on the ground, an unsuspecting Helga arrives. To cover up his failed seduction, the Duke explains to Helga that Ingrid attempted to win his romantic affection, but when he refused her, she used magic on him. However plausible the lie is, an unamused Helga rejects him as she knows the kind of man he is. Enraged, the Duke threatens to expose Ingrid to everyone in Arendelle because he believes the people deserve to know their future queen is a monster. At this, an angered Ingrid attempts to blast him, but Helga intervenes and takes the magical hit while the Duke escapes.
Later, his mind is wiped out of the incident and of both sisters' existence due to Grand Pabbie, who casts a memory spell on behalf of Gerda, the only remaining princess and heir to the throne following Ingrid's imprisonment.
- Originally, the character that would eventually become the Duke of Weselton was meant to be a royal handler for Anna and Elsa after the death of their parents; their fussy caretaker.
- According to the filmmakers, the regent character was going to be voiced by Louis CK.
- The Duke of Weselton's real name is unknown.
- The Duke is a red herring. At his first appearance, he reveals himself to be wanting to "exploit Arendelle's tradable goods" in a monologue. He follows with "Did I say that out loud?" This makes the viewer believe he is the villain, even more so when he calls Elsa out for sorcery, and again when he sends his goons to kill the queen. However, the whole time, he is merely a cover-up for the real villain Hans.
- Quite noticeably, after Hans is revealed to be the true antagonist of the film, the Duke's character is portrayed as, while still fussy, much more tame in terms of antagonistic behavior seen at the start of the film up until the third act. An example of this is seen when he actually shows concern over Anna after he's told the princess was killed by Elsa, whereas before Hans' reveal, the Duke apparently didn't care for anyone's well being, other than his own, and was apparently against Anna. It's highly likely this is because the red herring aspect of the character was no longer needed, thus revealing the Duke to actually be nothing more than a comedic, temperamental and paranoid antagonist, if anything.
- Leading up to the film's release, Disney portrayed the Duke as the main antagonist. This eventually turned out to be a disinformation campaign to hide Hans' true nature.
- The Duke's gasping line, "Sorcery!" has often been compared to Judge Claude Frollo's (The Hunchback of Notre Dame) line, "Witchcraft!", which was exclaimed in a similar manner.
- Some fans of the film complained that the Duke of Weselton's character seemed useless with the role of the villain belonging to Hans. However, this is not the case at all. The Duke of Weselton not only served as the red herring to cover up for Hans' villainy and a secondary antagonist himself, but also as a symbolic character, representing the fear Arendelle's citizens had for Elsa, as the filmmakers had a difficult time showcasing the denizens' feelings towards her after the curse otherwise.
- When the Duke slips on Elsa's ice, Anna and Hans weren't around. When the citizens of Arendelle notice it's snowing, Hans says "You slipped on ice" to the Duke when he was convinced Elsa wanted him dead. However, he and Anna weren't around to see that he slipped and that Elsa froze the fountain.
- Duke Weaselton, a character from Zootopia, is named after the Duke of Weselton; referencing the mutual voice actor of the two characters, and the mispronunciation of Weselton.
- As seen in the book, Across the Sea, Anna occasionally does mocking impressions of the Duke for Elsa's amusement when the former is feeling downhearted.
- In the Disney On Ice version of Frozen, the Duke is more of an overtly villainous character, who sought to kill Elsa to somehow reach his wealth-related ambitions. He also joined Hans' expedition to find the Snow Queen.
- Frozen Wiki: Duke of Weselton
- Villains Wiki: Duke of Weselton