|“||Wartihog is an aggressive bully of a boy, lavishly decorated with a handsome crop of adolescent pimples. He is always on the side of whoever is winning. His hunting dragon is a Gronckle, slightly smaller than Dogsbreath’s Gronckle, but equally unintelligent. His Riding Dragon, however, is quite a cool one, a Marsh Tiger.||”|
|— Official HTTYD Books Website|
Getting a Hunting Dragon
During the first part of the Dragon Initiation Program at the Wild Dragon Cliff, Gobber the Belch explains to the Viking novices about obtaining a dragon. He singles out Wartihog due to his size to explain that a large number of small dragons can strip him to the bone.
|“||Dragons this size are normally fairly harmless to man, but in these numbers they will set upon you like piranhas. There'd be nothing left of even a fatso like you, Wartihog - just a pile of bones and your helmet.||”|
Wartihog is able to snag a Gronckle from the Dragon Nursery.
Escaping from Wild Dragon Cliff
As the novices select their dragons, Fishlegs awakens the whole cavern of sleeping dragons. The boys flee out of the cave with the dragons in pursuit. Gobber and the novices race up Madman's Gully. The dragons catch up to him and one attacks Wartihog, "ripping red lines into his arms". Gobber defends him by beating the dragon with his axe handle.
Dealing with the Green Death
Wartihog, along with all the other initiates of the Hairy Hooligan Tribe and Meathead Tribe were exiled for failing the Final Initiation Test on Thor'sday Thursday. A violent storm washes several Seadragonus Giganticus Maximus ashore on the Isle of Berk. He vomits from the stench of the napping Green Death. Wartihog and the other initiates carry out a plan Hiccup concocted to pit the Green Death against the Purple Death by dropping feather bombs on the dragons and hurling insults at them. Ultimately, the two dragons kill each other, but not before the Green Death seeks revenge on Hiccup.
When a 'Swordfighting at Sea' lesson is interrupted by a mysterious coffin running into the ship, the ship sinks and all the novices must swim to shore. They wash up on the Long Beach, along with the coffin. Gobber orders Wartihog, Bearhug, Sharpknife, and Clueless to carry the coffin back to Hooligan village.
Later, while on a quest on the Isle of the Skullions to find Grimbeard the Ghastly's treasure, Wartihog and Clueless have a discussion about which dragon would win in a fight - the Bloody Crocoraptor or the Skullion? Upon seeing a huge footprint in the dirt later on, Fishlegs determines that the Skullion would win.
Wartihog takes part in a 'Frightening Foreigners' lesson in the Great Hall.
|“||Hiccup I want you to be the Hooligan Invader and Wartihog to be the simple Gaulish farmer. What Terrifying Techniques can you use to get Wartihog's belongings?||”|
Hiccup incorrectly starts speaking French and Wartihog responds by bashing him. Still posing as a Gaulish farmer, Snotlout grapples Wartihog in a 'Baggybum Bearhug' and takes his belongings and clothes.
Wartihog participates with the other Viking Novices in 'Hunting-With-Bows-and-Arrows-on-Skis' expedition. Speedifist proudly tells Wartihog that he shot 90 Semi-Spotted Snowpeckers during the exercise. Wartihog also participates in the Smashsticks-on-Ice competition during Freya'sday Fete.
As part of the young Vikings' education, Wartihog and the other Hooligan boys gathered on Huge Hill for a 'Herding-Reindeer-on-Horseback' lesson on an extremely hot day. During this lesson, the boys ride their pre-selected Riding Dragons for the first time. Wartihog's is a Marsh Tiger. The lessons turn deadly when the Reindeer and students are surrounded by flames caused by deadly Exterminator dragons. Most of the young Riding Dragons flee, leaving the boys in the fire. Gobber's Riding Dragon Goliath slowly evacuates the students two-by-two, and Wartihog escapes with Snotlout.
Wartihog is a stocky, adolescent boy of the Hooligan Tribe. He sports dark hair with two pig-tails or braids sticking out to the sides from under his helmet. His helmet has two thick, curved horns on it. Wartihog suffers from acne.
|“||Wartihog, for instance, was only eleven, but he already had a fine crop of bubbling adolescent pimples and a personal odor problem.||”|
|— Book 2|
|“||Wartihog could smash chairs to pieces with his bare fists.||”|
|— Book 4|
Smashing things with ease is a positive skill amongst the Hooligans and Vikings of the Barbaric Archipelago in general.
According to Book 1, Wartihog can't read. In Hooligan Viking society, this is actually considered a positive trait, though.
Wartihog is also mentioned to have a weak stomach and can vomit easily from strong smells.
|“||Wartihog, who had always had a delicate stomach, threw up disgustingly in the heather||”|
|— After smelling the Green Death's breath in Book 1|
|"How to Train Your Dragon":||Appears||"How to Ride a Dragon's Storm":||Absent|
|"How to Be a Pirate":||Appears||"How to Break a Dragon's Heart":||Absent|
|"How to Speak Dragonese":||Background||"How to Steal a Dragon's Sword":||Absent|
|"How to Cheat a Dragon's Curse":||Background||"How to Seize a Dragon's Jewel":||Absent|
|"How to Twist a Dragon's Tale":||Background||"How to Betray a Dragon's Hero":||Absent|
|"A Hero's Guide to Deadly Dragons":||Absent||"How to Fight a Dragon's Fury":||Absent|