Meatlug

Meatlug is Fishlegs' Gronckle from the film. In the film she was kept for Dragon Training and unnamed, but her name is revealed in Gift of the Night Fury. She is partly based in both Horrorcow and Seaslug.

Appearance
According to Fishlegs in "Heather Report Part I", Meatlug is 14 feet long, has an 18 foot wingspan, and weighs 5,724 pounds. She is dark brown in the film, but a lighter brown in Riders of Berk. She is also covered in small purple spots.

How To Train Your Dragon
Meatlug is the first dragon the teens are forced to battle during the dragon training lessons. She downs all of them except for Astrid and nearly kills Hiccup. She notably does not even contemplate sparing him, but Gobber yanks her away just in time to save Hiccup. The teens continue to train against her throughout the film, and Hiccup's tactics he has learned from watching Toothless work very well with her. At the film's climax, Hiccup taught his classmates how to ride the dragons before they flew off to rescue their tribe from the Red Death. The Gronckle was ridden by Fishlegs. She fights in the battle, but gets discombobulated by the noise of the Viking shields. She spins out of control and lands on Fishlegs. That ends her part in the battle. She is seen again at the end of the film being ridden by Fishlegs. She and her rider race off after Hiccup as the new era of Berk begins.

In Gift of the Night Fury
In Gift of the Night Fury, it is revealed Fishlegs named his Gronckle Meatlug, and Berk is preparing to celebrate Snoggletog for the first time with their dragons when suddenly the dragons all leave.

Fishlegs is revealed to have chained up Meatlug from leaving until Hiccup accidentally releases the Gronckle and it flies off with him. After the takeoff, Hiccup yells, "Meatlug?!", in surprise that Meatlug had not left. Meatlug did not acknowledge Hiccup until he yelled by taking her eyes off the sky in front of her to look at Hiccup in equal shock for a second before returning to flying. Inside the barn where Fishlegs kept Meatlug, he, Astrid, Snotlout, Ruffnut and Tuffnut discover that Meatlug is a she when they find her eggs in the hay. Until that point, the Vikings had thought that Meatlug was male, although apparently having noticed some behaviors more in line with female dragons, Fishlegs comments that "actually explains a few things".

Meanwhile Meatlug, with Hiccup on her back, flies to an island filled with dragons and their newly-hatched babies where Hiccup realizes the dragons came here to lay their eggs. Hiccup manages to return all the dragons and their babies to Berk, where Meatlug immediately goes to feed her hatchlings which she left at the barn and is tackled by a happy Fishlegs. Meatlug presumably partakes in Snoggletog with her rider as Fishlegs is holding two of her babies.

In Dragons: Riders/Defenders of Berk
In the TV series, Fishlegs and Meatlug establish a very endearing relationship, very similar in strength to Hiccup and Toothless' relationship. Side-by-side, they express that they really care for each other and appear to be both extremely heartbroken when they had to leave each other in the episode In Dragons We Trust.

By Twinsanity, Fishlegs has developed a series of hand signals to give Meatlug instructions without needing to speak.

In the episode, Dragon Flower, Fishlegs tells a story to Meatlug, which involved Meatlug to fart an awful smell which Fishlegs quotes as: "Smells like rose petals." But despite his words he keels over and passes out from the terrible stench.

In The Iron Gronckle, Meatlug ingests a large amount of rocks, which allowed her to create a lava that was stronger and lighter than iron, dubbed Gronckle Iron by Gobber. After she ran out, Fishlegs and Gobber gave her different rocks that made her skin magnetic. Meatlug became frightened and ran out of the village. After attracting different metal objects, including Hiccup's leg, and discovering the Outcast ship, Fishlegs and Hiccup used her magnetism to disarm the Outcast and sink the ship.

In Worst in Show, Meatlug felt neglected when Fishlegs spent time training with Iggy. During the competition, Meatlug found Alvin and the others spying on the teens. She was captured and used as a hostage. The Terrors were used to save her, and she was finally playing with Fishlegs.

Personality
Meatlug mellowed the most after the events in the movie. She is very kind and loving. Meatlug is also motherly, as she even plays with the younger kids on Berk, as seen on Gift of the Night Fury. She also comforts Fishlegs when he's down. Meatlug can also be hostile to enemies, as seen in Worst in Show. She cares about Fishlegs very much, and usually by his side. Meatlug is also smart in her own way.

Abilities, Skills and Weapons

Strength: Her strength show to be strong enough to lift her rider up in the air and hold Snoutlout as well. Her strength does shown that very heavy objects with her rider at the same time trying to go in the air is alot of struggling.

Duarble: Can show to take full strength of punch of Alvin to be knock out for few seconds and small or maybe bigger rocks can't really hurt her that well.

Fighting Skills': Can show to be good fighter by protecting Fishlegs from harm. Like using her head to take out a outcast and with her very strong tail is useful as well.

Speed: Not the fastest of the the rider dragons in the air but on land shown her short powerful legs can run munch faster on land then in air.

Intelligent: She shown to understand when Fishlegs feelings are hurt and the first one to learn hand singles and top of that she even learn a new one that Fishlegs give it a try to save the twins from the tree.

Hand Singles: She is the first to learn showing to be very easy. She shown to learn hand single to save the twins. She learn the hug single but shown to be useful as attack too.

 Senses: Her sences of smell could be stronger then night fury when she smell intruders like Mildew or she smelled Alvin.

Fire: Her fire balls can shot multiple times in just in one time. She can regerate the fastest of the other riders dragons by eating rocks or in one gulp can eat a large boulder to blast.

Weapons: sharp teeth, claws, head, noise like horn, gas, and club tail.

Affection: Shown to be motherly with her rider like licking his feet when sleeping, shown to small childern she can roar to play way, and her other way of showing affection of caring thinking Fishlegs will get hurt or get killed from dangerous dragon traps.

Loyalty: She shows her loyalty to Fishlegs by saving his life and standing with him like he was tied up in the cave she stay right next to him so he won't be alone.

"Spinning body attack": Meatlug will start spinning in high speed using her head and tail club. It shown to be very powerful attack against a Typhooboormang that will knock out of the air.

Trivia

 * Meatlug and Fishlegs have a very close relationship; one example of this is that Meatlug licks Fishlegs' feet before he goes to bed.
 * According to Fishlegs, Meatlug's favorite food is granite.
 * Meatlug likes to play Toss the Sheep with Fishlegs.
 * In the film and in The Gift of The Night Fury, Meatlug's wings beat like a hummingbird where you can't see the individual beats. In the series, you can easily see each beat of the wing.
 * In the sequel, Meatlug's coloring is the same as in the series, not the first movie.