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Alvin the Treacherous is the main antagonist from the books series How to Train Your Dragon.


Alvin (also known as Alvin the Poor-but-Honest-Farmer, His Most Mighty Murderousness Alvin the Treacherous, Great High Chieftain of the Outcast Tribe, Thin Prefect of Rome, Alphonse the Talented but Emotional French Chef or Terrific Al) is Hiccup's arch-nemesis. He has been an enemy of Berk in general and Hiccup in particular ever since How to Be a Pirate. His last appearance was How to Fight a Dragon's Fury.

Like Hiccup and Snotlout's family, Alvin's family is also directly descended from Grimbeard the Ghastly, but through a different branch. He was the son of the Witch Excellinor and Algarick Ogglebert and is the father of Fishlegs.

Alvinsmen are Alvin's soldiers they created the secret base under the water fall. Snotlout was temporarily one of the Alvinsmen.

How to be a Pirate

Alvin the Treacherous was thrown into a coffin, which was tossed into the sea by the Meathead tribe. He eventually arrived on the Isle of Berk where he was mistaken for the corpse of Grimbeard the Ghastly by the Hooligan tribe. He traveled to the Isle of the Skullions with the Hooligan tribe to find Grimbeard's treasure. However, this trip to the Isle of Skullions turned out to be a trap as the Outcasts attacked the Hooligans on their return journey to Berk. After the battle on board The Lucky Thirteen, Alvin, along with Hiccup, Fishlegs, and Toothless, went down into the sea with the shipwreck. Toothless guided the three to an underwater cavern (yep, they save Alvin...WHY?), which coincidentally contained the real treasure of Grimbeard the Ghastly. Alvin fought against Hiccup in the cavern until the Monstrous Strangulator awakened and shortly swallowed Alvin. (Sucks to be him.) Because Hiccup managed to trick the Monstrous Strangulator into poisoning itself, Alvin was able to cut himself free of the dragon's stomach and escape.

How to Speak Dragonese

The Thin Prefect of Rome was really Alvin in disguise, and he was the main mastermind behind the Fiendishly Clever Plan to start a blood feud between all of the Viking tribes in order to steal all of their dragons to their unawareness. Alvin had Hiccup, Fishlegs, Camicazi (the young heir to the Bog Burgler Tribe, and definately NOT Astrid), and Toothless captured and taken to Fort Sinister where they were to await the Saturn's Day Saturday games in which they would be participating. During the destruction of Fort Sinister, Alvin gave Hiccup a Venomous Vorpent (which resulted in Hiccup getting Vorpentitis) and clung on to the bottom of Hiccup's balloon in an attempt to escape. Hiccup unscrewed Alvin's hook by getting everyone to spin the balloon, and Alvin fell into the Sharkworm-infested waters below.

How to Twist a Dragon's Tale

Alvin, having survived the incident with the Sharkworms, resumed his old disguise as a guard at the Lava Lout Slave Jail named "Terrific Al", where he lied to Humungously Hotshot the Hero, causing him to try to kill Hiccup upon his release.

Hotshot left the Lava Lout islands with the Lava Louts who had imprisoned him when Exterminator Dragons began to rampage without the Firestone, leaving Alvin behind. Alvin planned to tame the exterminator dragons, whilst Hotshot could not bring himself to kill Hiccup and helped Hiccup return the Firestone to Lava Lout Island.

Alvin was swallowed by a fire-dragon which then dove into the Earth's core, although Alvin survived due to his firesuit and managed to escape in a quite disgusting bubble. (Seriously, this guy is practically invincible! Or quite lucky. Good or bad luck, I'm not quite sure which.)

How to Break a Dragon's Heart

Alvin masqueraded as a French chef called Alphonse in order to capture and kill Hiccup. He imprisoned Hiccup in a tree-cell on Berserk with Excellinor the Witch. Unbeknownst to him, the witch he had imprisoned Hiccup with was actually his mother (Excellinor, our most favorite person. NOT). Hiccup escaped from the cell, but the witch did not. However, after she escaped he encountered his mother, the Witch, on a burning bridge.

How to Ateal a Dragon's Sword

Alvin survived this frightful encounter with the help of his mother, and got sword fighting lessons from Flashburn, the greatest sword fighter in the Barbaric World. In How to Steal a Dragon's Sword he became king of the Wilderwest through trickery, stealing the title from Hiccup with the help of his mother and Snotlout. It is worth noting that Snotlout did not realize he was helping Alvin. In doing so, Alvin incited full scale war between the Dragons and Vikings, as well as stealing eight of the King's Lost Things from Hiccup.

How to Seize a Dragon's Jewel

A year after Alvin became king, in How to Seize a Dragon's Jewel, he had thousands of slaves in Prison Darkheart to look for the Dragon Jewel, having tricked Valhallarama into working against her son and delivering to him the map. After learning Hiccup was among the slaves, he threatened to kill Snotlout, who was loyal to Alvin and his mother, if Hiccup didn't turn himself in. Alvin then took Toothless and Wodensfang, and was about to kill his enemy, but was stopped by Excellinor, who argued that they needed Hiccup to find the Jewel. After Hiccup found it and escaped (thanks, Excellinor!), he was captured by Valhallarama and brought back to the prison. However, she did not give Alvin the Jewel. Instead she convinced many of the Vikings to accept Hiccup as their King, reinventing the Slavemark as the Dragonmark. When the Red Rage showed up, Hiccup, Fishlegs, and Camicazi escaped on the Deadly Shadow and freed Toothless and Wodensfang, but Alvin managed to take the Dragon Jewel, gaining a ninth Lost Thing.

How to Betray a Dragon's Hero

Following a period of three-way war between the Dragon Rebellion (led by the dragon Furious), the Alvinsmen (his own forces), and the Dragonmarkers (led by Hiccup and Valhallarama), Alvin captured Hiccup once more. Hiccup had broken into the Alvinsmen's underground stronghold to burgle the nine Things from Alvin, though instead Alvin took the tenth Thing, Tooothless, from Hiccup. Hiccup escaped before Alvin could execute him, though, taking the King's Lost Things with him. Naturally Alvin pursued with quite a large army, and managed to reclaim the Things. As of press time, Alvin believes Hiccup to be dead and is making his was to the island of Tomorrow to be properly crowned King of the Wilderwest.

How to Fight a Dragon's Fury

Afterwords Hiccup unites with the dragons and attacks and defeats Alvin and his forces. During the battle, Alvin tries to kill Fishlegs but is attacked and killed by the Dragon Guardians of Tomorrow.


Alvin's built is thin and he used to have some mustache and beard. He has a hook, because he lost his hand when the coffin closed. He later became bald, because he was eaten by a Monstrous Strangualtor. Later, he has an eyepatch and a peg leg, because his eye and foot got bitten by Sharkworms. He later lost his nose, because he survived by escaping in a bubble when being eaten by a Fire Dragon.


He is a very evil type and is even willing to kill Hiccup. He even wanted to be a king and this is why he stole all Hiccup's things. His primary goal is to destroy all dragons to extinction by using the Dragon Jewel, but he is not able to do it.


           How to Train Your Dragon logo.png Villains

Alvin the Treacherous† | Furious† | Green Death† | Purple Death† | Norbert the Nutjob | Excellinor the Witch† | Hairy Scary Librarian | Snotface Snotlout† | Venomous Vorpent

Northern Alliance
Drago Bludvist† | Drago's Bewilderbeast | Eret's Crew (Eret) | Warlords

Dragon Flyers
Krogan† | Mr. Murderous Pile of Yak Dung† | Flyer Leader

Dragon Hunters
Viggo Grimborn† | Ryker Grimborn† | Cleve | Ingar Ingerman† | Dragon Hunter Commander† | Fight Master

Outcast Tribe
Alvin the Treacherous | Mildew | Savage

Berserker Tribe
Dagur the Deranged | Savage

Red Death† | Boneknapper | Whispering Death | Skrill | Screaming Death | Slitherwings | Firecomb Crasher | Hookfang's Nemesis | Drago's Bewilderbeast | Deathgrippers

Grimmel the Grisly† | Johann† | Amos | Calder | Gruffnut Thorston

Rescue Riders
Magnus Finke | Slinkwing Trio (Lurke) | Waldondo del Mundo | Erik the Wretched | Svetlana the Sly