How to Train Your Dragon Wiki
How to Train Your Dragon Wiki

Hiccup: "Toothless can’t come and go like the other dragons, and that's just not fair. I was up all night and I think I found a way to fix that."
Astrid: "No way! You built him a new tail? So he's gonna be able to fly without you!"[src]

Toothless' Tail Fin is an artificial prosthetic tailfin that Hiccup designed and built for Toothless. It consists of a leather and metal tailfin controlled by a series of cables, pulleys, and gears connected to a set of pedals which Hiccup controls with his feet while sitting on the saddle.

Toothless' Saddle is a leather saddle for optimal comfort whilst riding Toothless, also used to operate the tail fin.(See above)


The saddle the first step to fly.gif

Toothless lost his left tail fin after Hiccup shot him down during a dragon attack on Berk at the beginning of the first movie, and was hence rendered unable to control his flight. After Hiccup freed Toothless and realized his tailfin was missing, he decided to make a prosthetic tail for the dragon.(See above)

The tail's first iteration consisted only of a strap-on prosthetic tailfin. After his first (unsuccessful) test with Toothless, Hiccup discovered that the tailfin's position

Hiccup tests the whole sistem.gif

needed to be varied in flight, which he attempted at first by attaching the fin to a rope and manipulating it by hand before eventually designing a gear system allowing him to control the tailfin with his left foot while sitting on a saddle.

The original fin was destroyed in the battle with the Red Death; Gobber built a second fin with a modified pedal for Hiccup's new prosthetic (him having lost part of his left leg in the attack). This fin was rebuilt and modified many times by Hiccup over the years, culminating in the design shown in How to Train Your Dragon 2.


The components of the first Tail.gif

The tail fin itself is, essentially, a fan-shaped like a Night Fury's tailfin, with leather held together by metal rods. Its original iteration consisted of merely the tail fin portion; eventually, the whole thing evolved to include a series of gears, pulleys, and cables controlled by a foot pedal mounted on a saddle which Hiccup sat on and controlled the pedal from. The original tail was colored brown, likely as it was made of leather - after it was destroyed during the battle with the Red Death, Gobber built a new version with a modified pedal designed for Hiccup's prosthetic, with a red-painted fin with a white skull symbol as shown in How to Train Your Dragon.

Toothless hovers to catch Hiccup.gif

In Gift of the Night Fury, Toothless' old tail was replaced with a darker brown auto-tail that had no cables or whatsoever and gave him the ability to fly on his own.

Toothless looks at Yellow 2.gif

A new upgraded design (Red 1.5) first appeared in the first episode of Dragons: Riders of Berk. It featured a dual pedal system that allows lateral/horizontal movement and dorsal/vertical movement of the tail. This new tail also incorporated an auto system similar to the one in Gift of the Night Fury. This dual-mode allowed the tail to switch from manual riding mode to the automatic mode. With this tail, Toothless is capable of flying on his own as shown in the episode "When Darkness Falls" when he was hovering next to a cliff, ready to catch Hiccup jumping off of it, as he was busy testing his Flightsuit. Yellowtail II (tail made from a sheet of Gronckle Iron) also incorporated dual-mode design, right after receiving it Toothless tested it out by flapping his tail himself and staring at it, intrigued. This dual design was used in Riders of Berk, Defenders of Berk, and Race to the Edge.

Hiccup puts a pedal for Stoick.gif

In "How to Pick Your Dragon", Hiccup modifies the foot controller on the saddle to accommodate a person with a foot, rather than Hiccup's prosthetic. This was to allow his father Stoick to learn to ride a dragon. It consisted mainly of a wooden whole-foot pedal attached to the left side of the saddle.

Hiccup makes a new improvised tail from the sails from the Reaper.gif

Toothless also has a greenish-yellow 'emergency' fin. It is seen (and used) in "Defiant One" when Hiccup and Snotlout were stranded on Outcast Island, Hiccup having kept it in his bag in case the usual one was damaged and Hiccup couldn't conduct repairs on Berk.


When Toothless' tail was damaged in "A Time to Skrill", Hiccup temporarily replaced it with the Dragon Hunters' flag. It was a slightly tattered beige flag with a red symbol. Upon seeing the symbol on his tail fin, many of the Dragon Riders were in an uproar as they thought he had become a hunter. Later on in the series, he had a temporary blue tail fin with his face painted on it.

In How to Train Your Dragon 2, the tail fin is shown to have been upgraded significantly. Notably, it now has a much more complex control system, featuring two pedals - one which controls the fin's vertical angle/movement, and a 'slider' pedal on the left which controls the fin's outward/horizontal extension. It also now features a locking mechanism in the form of a lever allowing for the tailfin to be locked in an open position to allow Toothless to glide while Hiccup uses his wingsuit.

Tail Fin Models



The original tail. It is colored brown, likely as it is made out of leather. Several variations of this tail were produced until Hiccup learned the basics of dragon flight and found a working tail design. The tail's first iteration consisted only of a strap-on prosthetic tailfin; after his first (unsuccessful) test with Toothless, Hiccup discovered that the tailfin's position needed to be varied in flight, which he eventually did by pulling a rope by hand and eventually designing a gear system allowing him to control the tailfin with his left foot. However, it was still flawed - even the latest iteration used (before it was destroyed) was too 'floppy' in the air, constantly flipping up and down due to the wind, meaning Toothless had to constantly counter what the prosthetic was doing. This tail was destroyed in the battle with the Red Death.

Red I

Red I

Built by Gobber while Hiccup was recovering after losing his leg, this tail was much stronger and sturdier then its predecessor. It had a modified stirrup designed for Hiccup's original prosthetic and is painted red with a skull symbol on it. It has been rebuilt many times over the years.

Automatic (Brown)

Auto Tail

On the first Snoggletog with dragons, Hiccup built Toothless a new tail that would allow him to fly on his own by using a complex gear system to mirror the right tail fin. This allows Toothless to fly on his own but means he only has basic control. After retrieving Hiccup's helmet, Toothless destroyed the tail preferring to fly with Hiccup then on his own.



This tail fin acted as a spare tail during the events in Dragons: Riders of Berk episode "Defiant One". Hiccup cobbled together this tail together when he and Snotlout crashed on Outcast Island. A connecting rod for Toothless' primary tail was damaged in the crash-landing, and things were further complicated when Snotlout broke a replacement connecting rod.

Yellow II

Yellow 2

Made of a thin sheet of Gronckle Iron, this tail is not well suited for long flights but perfect for gliding stealthily under a boat's sight line for a sneak attack.



Flimsy and sensitive, this tail allows for tight turns in small spaces, but not high altitude.



Made of Gronckle Iron, this tail is used in hot places such as volcanoes. Hiccup created this tail fin, along with others, during the events of Dragons: Race to the Edge. This green tail was destroyed trying to get an Eruptodon egg to its sacred nesting ground inside the active volcano on Caldera Cay, in the episode, "Out of the Frying Pan".

Red II

Red 2

This tail is an evolution of all the past tails. It features a much more complex gear system - unlike the older tails, this tail has two 'pedals', one on its right which controls the vertical angle of the tail, allowing for greater control to do things such as barrel rolls and tighter turns, and a 'sliding' pedal on its left controlled by Hiccup's prosthetic controlling the outward (horizontal) extension of the tail. This duel controlled tail allows Hiccup to more precisely control the tail to allow for more precise movements. It also has a locking mechanism allowing for Toothless to glide alongside Hiccup as he uses his flight suit but this greatly limits Toothless' movements making it very difficult for him to rescue Hiccup from dangerous situations but, with the discovery of his split back fins, it is easier for Toothless to maneuver and save Hiccup. This upgraded version first appeared in How to Train Your Dragon 2.

Automatic (Black)


In the third and final film Hiccup recreates the tail he made for Toothless on the first Snoggletog with dragons, so that he can fly with the Light Fury without him. Unlike Snoggletog, Toothless accepts this new tail permanently. This tail is slightly different to the first, as Hiccup goes the extra step to make it look as similar as Toothless' real tail fin. He also adds Toothless' scales to make it fireproof and later on it was also able to survive being electrocuted when Toothless used his cloaking ability. He also likely added all the other features each of the tailfins he made into it.


  • In the film, the skull is on both sides of Toothless' tail. In the rest of the franchise, it is just on the front.
  • The tail fin from the second film appears in the game, Dragons: Rise of Berk as a collectible in completing collections.
  • The symbol on Toothless' tail fin in How to Train Your Dragon 2 is similar to the symbol on Steve Palchuk's shirt from Trollhunters: Tales of Arcadia.
  • In early episodes like "Breakneck Bog", "When Darkness Falls", and "Stryke Out", there are brief scenes wher Toothless is shown to be able to fly without Hiccup, though the regular position of his tail could just be for hovering.
  • In the 'what-if' scenario imagined by Astrid in "Darkest Night" where she wondered what would have happened if Hiccup had never shot Toothless down, the saddle and fin were devised by Gobber while Hiccup was unconscious after Toothless saved his life following a confrontation with Toothless' Nemesis.

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