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The Moldruffle is a Stoker Class dragon that first appeared in School of Dragons.

However, in Rise of Berk, it is called a Common Rockstomper, with Moldruffle being an Exclusive dragon.

Official Description

"Rockstompers have a tradition of burying hidden caches of supplies under the sand, including the belongings of Vikings, much to their riders' dismay.
There's no hiding from this Dragon! Rockstompers can track down anything, including their enemies in the heat of the battle.
―Rockstomper description in Dragons: Rise of Berk
"This Rockstomper's tracking skills came in handy when Snoutlout and Hookfang landed on its island. Moldruffle found them fresh water deep underground by using its horns as a divining rod."
―Moldruffle description in Dragons: Rise of Berk

Physical Appearance


The Moldruffle's egg is shaped much like a regular bird's. It has several curved ridges that slop towards the base of the egg. The color of the egg determines the color after the dragon hatches.

Hatchling to Adult

The Moldruffle looks a lot like the Snafflefang in terms of appearance and build. They are talented flyers. The Moldruffle is a dragon that actively and effortlessly hunts prey other than fish. Its head is shaped to be like a hunter, rather than a scavenger or fisher. The spikes on its back are unusual, since most dragons with spikes have a neat and smooth pattern. The Moldruffle has a random pattern of varying spikes. These spikes can be effective weapons for defensive purposes. They also seem to have talons at the tips of their wings which they ignite during their special ability, these talons may also be used for an offensive purpose.

In Rise of Berk, the Rockstomper looks similar to the original design, however, is purple in color with lilac spots.

Titan Wing

Titan Moldruffles are red in color with blue and red stripes on their wings and blue stripes on their back and tail. They have more spikes on their backs.

Titan Wing Moldruffle

Titan Wing Moldruffle



The Moldruffle is an excellent hunter, and it has sharp, long-range vision to help spot its prey. They are intelligent cat-like dragons in their natural behavior, with keen hunting senses. They are also described as being 'wonderfully curious'. They are quick and precise, and can glide through strong winds.

Speed and Stamina

These dragons have an aerodynamic build, making them quick and extremely agile hunters. They also have a lot of stamina and are known to travel great distances.

Horns and Talons

The Moldruffle also has quite a unusual way to communicate with others of dragons of its kind. The Moldruffle's sharp horns resonate a pure sound when struck against objects and this is used to send a message to its dragon kin. It can also use its horns as a deadly weapon. It has talons at the edges of its wings which it can use as an offensive weapon.


The Moldruffle is able to shoot a huge, powerful fireball, which is known to have immense strength.

Moldruffle's ability

The Moldruffle with its wings and tail on fire

The Moldruffle's signature ability is when they gather fire on the edges of their wings and tail, using their fan-like tail to strengthen the blazing flames. Imagine the terror of seeing a fiery inferno diving at prey with incredible speed and precision! Since they are able to travel great distances, this would mean their ability would be extremely powerful over time as it strengthens the blaze with its fan-like tail.


As a Tracker Class dragon in Rise of Berk, these dragons are said to have superb tracking skills, including tracking enemies.

Behavior and Personality

The Moldruffle is incredibly catlike in nature. They are intelligent and curious. Its keen senses are quickly distracted, and it switches it's focus from one thing to another.


The Moldruffle's number one (and so far its only) weakness is the fact that it is easily distracted, so some of the Berk Dragon Riders could distract a Moldruffle while the others captured it if it ever became a problem.



School of Dragons

The Moldruffle is the first dragon to originate in School of Dragons as a Stoker Class dragon.

Dragons: Rise of Berk

Following its debut in School of Dragons, the Moldruffle appeared in the game as an exclusive Rockstomper. The Rockstomper, however, is purple in colour. The Rockstomper, however, is a Tracker Class dragon.


  • This is the second dragon described to be cat-like, the first being the Night Fury.
    • Though it is a cat-like dragon, it doesn't have the appearance of a cat, only its behavior and nature.
  • They are one of the fewer dragons that favor land creatures over sea food.
  • It is still unclear which Class this dragon belongs to.
  • Its head resembles the figurehead for the Outcast ships, though their skulls are shorter.
  • With the exception of their heads, the Moldruffle's design is nearly identical to the Shovlehelm's. They even have the same fan-like tails.
  • In the book Dragons: To Berk and Beyond, the Rockstomper is classified as a Tracker Class dragon.
  • Moldruffle is the fourth dragon species that had a specific individual appear in Rise of Berk before the dragon itself did, the first was the Catastrophic Quaken (Spikeback), the second was the Gobsucker (Muddlehunt) and the third was the Triple Stryke (Sleuther).

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