Dagur the Deranged

Dagur

> Hunters I have a message for Viggo, tell him Dagur the Deranged says hello.
>
> Dagur

**Dagur the Deranged** is the High Chief of the Berserkers and the King of the Defenders of the Wing. He is the son of Oswald the Agreeable and brother of Heather. He rides a Triple Stryke named Sleuther, and formerly rode a Gronckle named Shattermaster.

## Physical Appearance

Dagur's hair is cut short and sticks up, and he has a short, shaggy beard. His arms are more muscly, as he has been working out during his time in prison. He has a list of names tattooed on his left forearm, most likely his "revenge list."

In the first two episodes of *Race to the Edge*, Dagur wears the same outfits as in *Riders* and *Defenders of Berk*, but without his shoulder pads or left arm bands. His clothing is severely torn.

Later, however, he wears a brown leather and metal tunic with a Skrill chest plate, as well as new knee pads. He has two arm pads as well as similar ones on his boots, which appear to be the same as in previous seasons.

By the series finale of *Race to the Edge*, when he marries Mala, he appears to have shaved his beard.

## Personality

His former title of Dagur the Deranged was actually quite fitting for him, as he was seen as violent and extremely unstable. When he laughed, at least initially, his smile changed to a frown after a while. At times he performs erratic acts without thought or reason, other than to shed blood and kill. This impulsiveness made him unpredictable at times. He may have be hyperactive as well as insane. He was especially eager to kill dragons and saw them as nothing more than targets for his sadistic sense of pleasure. It is shown that while Dagur prided himself as a dragon killer, he has little regard for the sport, having brought his entire armada to assist him on his hunt for Toothless. He also had an enormous ego, was very rude, and disrespectful. He also was very vengeful. He also showed a lack of respect for those who were peaceful in his debut.

Also he is shown to have a sense of humour, such as when he meets Hiccup again in "Family on the Edge" and says "Hiccup! Where's my hug?" and when he calls Hiccup small and cuddly.

But behind his insane and sadistic nature, he still has good in him. Dagur is understandably very fond of his sister, and helped her numerous times. Most ironically, he even dared to go against Viggo's orders to rescue Heather, who was sentenced to death, even though she was siding with the riders. Later, Dagur was willing to sacrifice himself to save the riders from potential death.

As displayed in various events after his reformation, Dagur actually prioritizes family before anything else. He is fiercely protective of Heather, to the point of threatening Ryker not to harm his sister and often reinforcing their bond by saying things like, "Nothing like a family rift, eh, sister?" in "Maces and Talons, Part 1". He also willingly broke out and seemingly sacrificed his life to save Heather, despite her negativity against him, showing just how much she means to him.

## Biography

### Beginning

Dagur returns in *Race to the Edge* and serves as the main, later tertiary antagonist. As shown in *Dragon Eye of the Beholder, Part 1*, about three years after his defeat by the Hairy Hooligans, the Outcasts, and the dragons, Dagur was imprisoned by Alvin and is no longer chief of the Berserker tribe. Vorg and a few others Berserkers, including Savage, were imprisoned as well due to their loyalty. He eventually escaped and stole Johann's ship. He planned to steal the gold from Trader Johann to rebuild his army. He soon crosses paths with Hiccup and the Dragon Riders, with the former discovering the Dragon Eye. Dagur initially takes it from Hiccup, but the young Viking quickly manages to steal it back. Dagur still manages to get away with Johann's treasure.

In "Gone Gustav Gone", Dagur's men manage to salvage the traps from *The Reaper*, but Dagur is still after the Dragon Eye. Later, they capture Gustav Larson, who agrees to help Dagur get it by having Hiccup trade for Gustav. The unofficial Dragon Rider takes Dagur to an island using the Dragon Eye, to get the treasure. However, this was a trick, with Hiccup's help to get the Dragon Eye back. Dagur, realizing he's trapped, drops the Dragon Eye into a chasm, distracting Hiccup. Dagur manages to escape, but luckily Gustav and Hiccup are able to get the Dragon Eye back.

It was revealed in "Have Dragon Will Travel, Part 2", that before his imprisonment on Outcast Island, Dagur wiped out Heather's village and her family. In a rage, she tried to kill him. Dagur immediately recognized Heather and proceeded to capture her, but she and her dragon Windshear were saved by Hiccup. Dagur later planned to meet with another tribe to rig his ship with dragon-proof catapults and winches, though the Dragon Riders were tipped off by Johann and set out to capture him. While Fishlegs, Snotlout, and the twins distracted Dagur, Heather and Astrid snuck aboard to take out his men. When defeated, Heather commanded Windshear to kill Dagur to avenge her family, only to be stopped by Hiccup and Toothless. Hiccup explained to Heather that her horn, which her father gave to her, was a gift from Stoick to Oswald the Agreeable for his newborn daughter. This meant that Dagur was actually Heather's brother. He attempted to ask her to join him but to no avail. He was left calling after Heather as she flew away from his ship.

### Alliance with the Dragon Hunters

Dagur then attacked Berk to lure the Dragon Riders out in "Team Astrid", then following them to find Dragon's Edge. In the process, however, he destroyed Astrid's home which inspired her to train an auxiliary team to protect Berk. The new riders assisted in defending Dragon's Edge from Dagur, forcing him to retreat.

During the events of "Night of the Hunters, Parts 1 and 2", Dagur is revealed to have joined Ryker and the Dragon Hunters, and Heather has joined him as well. Ryker, Heather, and Dagur try to get Astrid to tell them where the Dragon Eye was. Dagur tried to convince Ryker to throw the riders overboard, but Heather suggests they use them as slaves for Viggo. Dagur confronts his sister for opposing his idea, to which she replies that she was protecting him. That if something went wrong, Ryker would be blamed and not Dagur. Hiccup and Snotlout soon arrive and manage to free the other riders.

Dagur and Ryker later appeared in "The Zippleback Experience", when they planned to kidnap Hiccup and use him to find the islands the Dragon Eye had led the riders to. Once they had Hiccup, they began to sail out. However, Barf and Belch witnessed Hiccup's abduction and set out to rescue him. They also sent out their distress signal to call the other riders. Dagur was about to fire multiple arrows using a large crossbow but was blown up by the Zippleback. The hunters managed to capture Barf and Belch but were saved by Ruffnut and Tuffnut. The Dragon Riders continued to attack the ship, forcing the hunters to retreat.

Dagur was then sent on a wild goose chase by Heather to find a second Dragon Eye as mentioned during the events of "Snow Way Out".

Dagur, alongside Heather, Ryker and their fleet, then attacked Dragon's Edge in "Edge of Disaster, Parts 1 and 2". After having his men kidnap Ruffnut, Dagur then questioned her about the Edge's defense. Despite Ruffnut's false claims, Dagur continued to try to get in Dragon's Edge to steal the Dragon Eye. After several failed attempts, Dagur realized he hadn't seen Hiccup, Snotlout, Fishlegs, or their dragons. This meant they did fall for the Hunters trick by luring Johann to an island that was home to the dragon that had been attacked by the Hunters and split up. Dagur faced off against Astrid but was quickly overpowered by her. Hiccup and the other Riders soon arrived, along with the herd of wild dragons to protect the Edge. Dagur managed to escape with Heather and the Hunters.

During one of their runs in "A Time to Skrill", the Dragon Hunters spotted a storm, which Dagur immediately recognized as the Frozen Skrill from three years earlier. Determined to get it back, Dagur tells the Hunters to head towards the flashes. He was surprised that Hiccup actually brought the Skrill to them, but returned his attention back to capturing it. After taking the Skrill down with the Dragon Root arrows, Hiccup tries to grab the dragon away but is cut off, thus returning the Skrill back into Dagur's hands. The Dragon Hunters later landed on an island to rest, while placing the Skrill in water so he couldn't shoot lightning. Knowing Hiccup would come back for the dragon, Dagur and Ryker soon captured the Dragon Riders as well. However, Hiccup manages to get to Toothless, who in turn frees the Skrill. Once free, the Skrill attacks Dagur and the Dragon Hunters, forcing them to run.

After another failed fight against the Dragon Riders in "Maces and Talons, Parts 1 and 2", Ryker begins to suspect Heather is giving them information. However, Dagur defends his sister and threatens Ryker if he tries to hurt her. Ryker is soon given information that it is time to meet up with Viggo. Heather asks Dagur what he knows of the Dragon Hunters' leader. He describes him as being the opposite of Ryker, svelte and smart, even more so than himself, which he doesn't quite believe; and that he loves the art of the kill. Dagur also tells Heather that Ryker is even afraid of Viggo, despite being the older brother. Dagur soon drops the subject and hugs Heather, happy that the two of them are together after so many years. Dagur joins Ryker and the Dragon Hunters in capturing a Flightmare.

When it is revealed Heather is a traitor, Dagur is tasked with locking her up. Heather tries to reason with her brother that they should not turn on each other. This causes Dagur to viciously question Heather about her family values when she had tried to kill him before. Heather reminded him that she didn't know he was her brother at the time, and that he had destroyed her island. Seeing Heather's point, he asked if she was still mad about that. When she doesn't respond, Dagur locks her up, telling her that the only one he can trust is himself. Later on, Dagur plays Maces & Talons with Viggo, using their men. While Dagur gains the upper hand, Viggo still beats him, showing his readiness to make sacrifices. After the Dragon Riders begin their attack, Viggo sends Dagur off to take care of Heather. Before he does, Dagur asks Ryker why he puts up Viggo. The hunter replies that even though Viggo gets to him, he's still his brother, leaving Dagur alone to think. Dagur and two Hunters later take Heather away. However, the two men notice something is off, just before Dagur bashes their heads together, knocking them out. He takes out his axe and uses it to free Heather from her shackles, and whistles for Windshear. Dagur then leaves, but not before looking back at his sister.

### Redemption

Eventually, Viggo sets Dagur adrift[please confirm], and he finds himself on an island alone where he has lots of time to think and has a change of character. When Hiccup and Toothless get hit by the Dragon Hunter's dragon root arrows in "Enemy of My Enemy", they crash land on the same island. Hiccup hides Toothless in a cave and goes out to draw the Hunters away and buy the duo a little time. As he does so, Dagur ambushes the Dragon Hunters one by one until he finally reveals himself to be Hiccup and Toothless' savior. Hiccup doesn't believe what he says and even attacks Dagur in an attempt to protect Toothless. It takes a lot of convincing from the former Berserker chief to gain enough trust to lead Hiccup into a safe cave near a waterfall. As they go Hiccup is still unsure of Dagur's newfound allegiance and gets nervous when Dagur pulls out a knife and throws it past his head. It is only when the knife unsets a dragon trap that he calms down, but only slightly. On the trail there, it is very slippery and Hiccup and Dagur both almost fall into the waters below. Dagur apologizes for his lack of thought to warn Hiccup of the danger beforehand. Once in the cave, Dagur takes the liberty of making Toothless as comfortable as possible, giving him a pillow, as he explains to Hiccup why he was helping him out. He even tells Hiccup of the antidote to cure the symptoms of the dragon root arrows. He throws Hiccup a sword before they go out in search of the ingredients.

As they gather the needed items, they come across a camouflaged Changewing and Dagur whistles into his hands as it begins an attack. The dragon immediately calms down and leaves. They soon come to a large rock that has the final ingredient on the top, a purple oleander. Hiccup climbs up as the Dragon Hunters prepare an ambush. Dagur easily takes them out and holds a mace above a knocked out Hunter before dropping it to the ground as evidence of his change. Once Hiccup makes it down he pushes him out of the way of an arrow, getting hit himself. Hiccup takes Dagur back to the cave and even gives him a sling to hold his arm. Once the antidote is finished Hiccup gives it to Toothless. Not a moment later, the dragon is in a fit of spasms and roars before dropping to the ground. Hiccup blames Dagur for hurting his dragon and pushes both of them out of the cave and into a river. Once they reach the shore, the Dragon Hunters have them surrounded and hold them captive for information on the whereabouts of Toothless. When a Hunter threatens to brand Hiccup, Dagur makes an escape attempt but leaves Hiccup behind. Once gone, Dagur pauses for a moment but continues towards the cave where Toothless is hiding. Before anything bad can happen to Hiccup, Toothless attacks the Hunters, with the help of Dagur riding on his back. Once defeated Dagur reunites Hiccup and Toothless, cuts Hiccups ropes, and they part ways.

During the events of "To Heather or Not to Heather", Dagur sends a letter to the Riders asking for help to find his sister, unaware that Heather is with them. They decide to keep her location a secret from Dagur.

Dagur soon finds his way to Dragon's Edge in "Family on the Edge", and surprises Hiccup in his hut. Dagur pleas with Hiccup to teach him how to ride dragons so he can find Heather. Hiccup finally agrees, telling Dagur to camp out on the far side of the island, as well as try to keep Heather, and the others, from knowing her brother is there. The next morning, Hiccup introduces Dagur to his dragon, Shattermaster, a green Gronckle. He begins training him to ride until Dagur and his dragon crash on top of Hiccup and Toothless, ruining his leg. Hiccup takes Shattermaster to his hut to get a spare, leaving Toothless with Dagur, who decides to ride on Toothless to pass the time. He crashes and is surrounded by Astrid, Fishlegs and Ruffnut and Tuffnut. They surround him thinking he had hurt Hiccup until the young Viking shows up on the scene explaining what had happened. Eventually, the gang trusts Dagur enough, each taking a turn teaching him how to ride showing him new tricks and improving his bond with Shattermaster. When Snotlout and Heather come back from checking out their target for their next attack, Heather attacks Dagur with a punch and blames Hiccup for helping her mortal enemy. Dagur eventually walks out on the verge of tears until he comes across the gang's battle plan. He tells them it was a trap before they lock him in a cell. They saddle up the next day seeing Dagur has been broken out by his dragon. They follow on his trail and watch as he is attacked by dragon hunters. They become fully aware that it was indeed a trap. Dagur continues to attack the hunters despite the impossible odds.

He takes out two knives and flies into an enormous cloud of smoke as the music swells heroically. Hiccup tries to rally the riders to go and help him, but Astrid stops him. She tells him that Dagur is gone and that there is nothing they can do. Before he left, Dagur left a note for Heather saying he didn't want Hiccup leading her into a trap, he never killed their father, and that he was sorry for everything he had done. Dagur was changed by his sister, and was a hero till the very end, even if the time he spent redeemed was short lived and no one trusted him.

### Rebuilding his tribe

Dagur is revealed to have survived in Saving Shattermaster. Hiccup and Heather encounter him on a trading post where he seems to have aligned himself with the Dragon Hunters again. When Hiccup and Heather first confront him, he claims to not know who they are. Hiccup and Heather decide to kidnap him and take him back to the Edge. When they grab him, Dagur admits that he was faking the amnesia because he was working undercover with the Dragon Hunters in an attempt to save his dragon, Shattermaster. Hiccup and Heather help him infiltrate the ship carrying the Gronckles and save Shattermaster. Dagur and Shattermaster then lead the Dragon Hunters away, so that Hiccup and Heather can escape.

Dagur returns to the Edge in "Gold Rush". He informs the Riders that he learned from a Hunter where Viggo hides his gold. In exchange for his help in stealing the gold, he asks for a portion of the gold so that Heather and he can find their father and restore the Berserker Tribe.

Heather initially wants nothing to do with Dagur; however, after spending time with him while on the mission, she starts to learn what it truly means to be a Berserker and grows closer to her brother. After they successfully steal Viggo's gold, Heather agrees to go with Dagur.

Dagur and Heather return in "Shell Shocked, Part 1" and "Shell Shocked, Part 2". It is revealed that Dagur and Heather have resettled Berserker Island. However, it is soon attacked by Ryker and the Shellfire. They are forced to evacuate the island to save their people. Dagur later helps the Riders defend the Edge from the Hunters. After Shattermaster gets hurt, Dagur resigns himself to die fighting; however Sleuther defends him and allows Dagur to ride him. He is last seen riding Sleuther, who is carrying Shattermaster, to get treated for his injuries.

### Searching for Oswald

Dagur next appears in "Something Rotten on Berserker Island" riding Sleuther as he and Heather come to welcome the arriving Dragon Riders to Berserker Island. Much to the dismay of Snotlout, whose name he continually gets wrong, he has chosen Gustav as a Berserker apprentice while Hiccup is surprised to see Savage among the Berserkers once more. While giving a speech at the Berserker Apprentice Graduation Ceremony, Dagur is suddenly captured and imprisoned by Savage, who has staged a coup. Thanks to Snotlout, he is released, along with the subsequently captured Gustav. He then reveals that he took Gustav on only as a favor to Stoick. After reclaiming the throne from Savage, Dagur gives a trophy, originally intended for Gustav, to Snotlout for his role in restoring the Berserker Chief to power, although he has miswritten Snotlout's name as *Snotknuckles* on the trophy, much to Snotlout's ire.

In "Searching for Oswald... and Chicken", Dagur comes to the Edge, frustrated that Heather doesn't listen to him and doesn't give up on the search for Oswald, and asks Hiccup for help. While reading through Oswald's Diary, Hiccup notices a sketch of a Sentinel dragon and tells Dagur they must go to Vanaheim to find clues of Oswald's disappearance. Hiccup and Dagur, with Fishlegs accompanying them, fly to the sacred resting place of the dragons. Once they arrive, the trio find the Grim Gnashers that are preying on sick and injured dragons and temporarily chase them off. Eventually, the three find Oswald's hut made of wood salvaged from a Berserker galleon, hinting Dagur to realize that his father was shipwrecked on Vanaheim all those years ago. As Dagur enters the hut, he is shocked to find his father's body laying on the floor. Dagur and the riders then bury Oswald outside the hut. Dagur then proceeds to blame himself for never sending out a search party. Dagur, Hiccup, and Fishlegs then find the paintings on Oswald's walls and realize that Oswald had helped the Sentinels drive the Grim Gnashers out of Vanaheim. Soon, Dagur finds the letters his father left for him and his sister, thanks to Toothless. While reading his letter, Dagur comes to peace with his father's passing and with help of Hiccup, Fishlegs, and the Sentinels, they manage to drive the Grim Gnashers out of Vanaheim, earning the Sentinels' respect.

In the following episode "Sins of the Past", Hiccup, Dagur, and Fishlegs, along with their dragons (Toothless, Sleuther, and Meatlug), arrive at Berserker Island to get some rest when a Berserkian Guard (possibly Captain Vorg) welcomes Dagur back home. Dagur questions the guard on Heather's whereabouts, to which the guard replies that Johann and Heather left for the Northern Markets after Johann told Heather that he heard that Oswald is still alive. Realizing that it is a trap (which, unbeknownst to them, was orchestrated by Krogan, Viggo, and Johann), Dagur and the two Dragon Riders immediately set out for the markets to rescue Heather and Johann. Upon arrival, they get help from a merchant (who Dagur forced to cooperate) and tells them that Snotlout, Heather, and Johann had fled north with the Dragon Flyers in hot pursuit. After rendezvousing with Astrid on their way to rescue their friends, Dagur then dives into the sea to save his sister and her dragon from drowning with help from Sleuther. Upon realizing that the flyers had stolen Heather's Dragon Eye lens, they chase after Krogan and his flyers; no matter how hard they tried, the flyers reclaim the lens thanks to Johann.

Back at Dragon's Edge, Dagur tells Heather that their father died on Vanaheim and hands her a letter Oswald left for her. Heather, whose long and perilous search for Oswald has finally come to a closure, then tearfully hugs her brother, the only family she has left.

### Finding True Love

Dagur and Mala hardly knew each other existed until "Chain of Command", when they couldn't agree on anything while trying to help the Riders decide what to do about Johann's possible knowledge of the location of the Dragon Eye lenses. The twins try to trick them into getting along, and although their efforts didn't work as expected, the pair soon found they had an attraction for each other. Dagur attempted the trials that Snotlout had failed earlier in the series and passed. Therefore, Dagur was now in line to become the next King of the Defenders of the Wing, and Mala's husband.

The two have a very public though quick romance throughout the remainder of the season (even doing "Eskimos" and "butterfly" kisses with "beard scratching"), ride together on Sleuther during combats, and finally marry in the finale with the Dragon Riders, Heather, and Throk as their witnesses. It is possible that their respective tribes were united through their wedding.

## Dragons

* **Shattermaster** (formerly)
* **Sleuther** (primary)

## Weapons

* **Axe**
* **Daggers**
* **Crossbow**
* **Twin Bludgeons**
* **Sword**
* **Mace**
* **Unhinged Mind**

## Abilities

* **Strength and Fighting Skills:** Dagur is an accomplished fighter and has shown to be able to hold his own against Alvin the Treacherous, though he isn't above using unfair means in order to win. He also was able to control a Skrill by harnessing it and controlling it with ropes. He has better fighting skills than many adult Vikings, such as Savage, despite the fact that he is young. He has been working out for the past three years, as his muscles are shown to be a lot bigger and he has grown much stronger as he can incapacitate Outcasts, Berserkers and Dragon Hunters with one punch.
* **Berserker Rage:** As a Berserker, Dagur tends to act savagely, even outside of battle. He enjoys violence of any kind and will even attack his own men. After being imprisoned for three years, these tendencies had intensified. It is possible he actually possesses Berserker abilities, this can be seen when Dagur requests Hiccup to howl with him, like a wolf (úlfheðnar) in "The Night and the Fury", and in their battle near the end he fought like an animal and acted savagely.
* **Intelligence:** Despite claiming that he hates strategy, Dagur is surprisingly clever. He managed to lure Hiccup to Outcast Island by letting his soldiers tell Trader Johann false information about some kind of weapon that will use against the Riders of Berk in "The Flight Stuff". He also used Trader Johann to bring the Smothering Smokebreath nest to Berk in "Smoke Gets in Your Eyes" so the dragons would steal Berk's weapons, making them vulnerable to an invasion. He also figured out the effect Dragon Root has on wild Dragons, and used this information to get the dragons and their Riders trapped in the academy so he could trade with Hiccup for his dragon to save his friends. This plan was unsuccessful, so he made up for it by capturing Stoick in "Cast Out, Part 1" instead, to make another trade. His intelligence also allows him to gain the upper hand in battle, like in "Team Astrid" he knew that his hit and run attack on Berk would get Hiccup and his Riders out in the open trying to find his fleet. He used that against them and had his men map the trajectory of their movements, thus allowing him to find their secret hideout on Dragon's Edge and lay siege to their base until Hiccup sent a message back to Berk for reinforcements, which forced Dagur into retreat.
* **Speed and Agility:** Dagur has proven in fights against Alvin the Treacherous and several wild Dragons that he is a very fast and agile warrior.
* **Leadership Skills:** Unlike the Outcasts, Dagur's soldiers appear to follow him out of respect and not fear. However, just like Alvin, his men wouldn't dream of not obeying their leader. The Outcasts join the Berserkers after Dagur supposedly kills Alvin in "A View to a Skrill, Part 2". However, he was still their leader three years later when he escaped from jail. Even after his reformation, he remains the leader of the Berserker tribe.
* **Dragon Slaying:** He seemed to enjoy killing dragons. At first, he saw Barf and Belch and was very eager to capture the dragon to slice their heads off but it failed when he saw the dragon attack. As he saw trained dragons that were attacking in the Kill Ring, he was shown to be afraid mostly when he saw the Night Fury and Monstrous Nightmare. But on Dragon Island, he was training for possibly weeks or months to kill dragons and study their abilities. He was able to kill a few dragons, including a Monstrous Nightmare, proven by the dragon's skeleton. He gave up this skill, due to his reformation.
* **Skrill Controlling:** Dagur was able to control the Skrill very well, using the creature like a puppet. Dagur was able to make his Skrill attack everything. However, Hiccup managed to trick Dagur into standing in water as the Skrill attacked, electrocuting the Berserker, who then lost his Skrill in the ensuing chaos.
* **Endurance and Stamina:** His body is very muscular as he able to endure attacks from other Vikings and continue to fight. He even endures getting shot with an arrow in his shoulder and is later shown to have recovered as he was able to fight once more after the treatment he got from Hiccup. His stamina is very high due to all of the training he has done over the years.
* **Dragon Training and Riding:** Though very briefly, Dagur showed some signs of being a great dragon rider. His first ride on Toothless was difficult for him at first, although he did improve on the second time. He quickly earned the trust of Shattermaster, his first dragon, who became protective of him, even though they had only been together for one day. He proven to be fast learner according to Fishlegs as he was able to train Shattermaster very fast during the short time they have been together. He was also able to pick up other skills used by dragon riders during his isolation, like emitting a call to ward off Changewings. He even rode on the Triple Stryke for saving his life.

* **Artistic Ability:** Dagur appears to have artistic talent, as seen on the cave wall drawings seen in "Enemy of My Enemy". It is unknown if he had any formal art training. However, his father, Oswald, also seems to be rather talented with sketches, as seen in "Searching for Oswald... and Chicken". It appears he inherited the artistic ability from his father Oswald the Agreeable.

## Trivia

* Dagur's name (according to Nameberry) means day in Old Norse. The name comes from a Norse Mythological character who rode around the earth with his mother, Nott (night), every 24 hours.

* Dagur has a list of names on his left forearm, possibly his revenge list. The first says "Lier", which is crossed out, followed by "Hiccup", "Night Fury", "Alvin", "Astrid", "Fishlegs", and finally "Sister" which refers to Heather.
	+ After setting Heather adrift, it's uncertain why he hadn't crossed her out like he had their father. He may have felt regret and hoped she was still alive.
* When angered, Dagur has a tendency to take out his frustration on his own men, often tossing them overboard, strangling them, or otherwise inflicting physical harm on them.
	+ After his reformation, when Dagur is angry or annoyed, he takes on meditation to calm down.
* It is possible that Dagur's character is inspired by Norbert the Nutjob from the books, since both characters have many things in common:
	+ They have alliterations in both their names and their titles.
	+ Both of them have deceased fathers.
	+ Both of them have mentally unstable personalities.
	+ Both of them had been struck by lightning, though through different means (Dagur was struck by a Skrill while Norbert was hit directly through his axe).
	+ Both of them prefer axes as their main weapons.
	+ Both of them are former enemies of Hiccup and his tribe.
	+ Both of them are chieftains to their respective tribes (Dagur to the Berserkers and Norbert to the Hysterics).
		- Both these tribes are considered insane.
	+ Their helmets look very similar.
* Starting with "Enemy of My Enemy", Dagur's irises are larger and lighter green, like Heather's. This may be due to his change of heart and decision to reform.
* His hair in *Race to the Edge* resembles Hiccup's in the books.
* Dagur has been hit in the leg by a Deadly Nadder spine at least once.
* In "Something Rotten on Berserker Island", it is revealed that Dagur has a throne made of axes and swords, similar to the Iron Throne from the TV series *Game of Thrones*.
* Dagur, Astrid, Valka,and Gustav are the only main protagonists to have historically accurate Norse names.