He is a renowned leader and raider among the Free Folk and second in command behind Mance Rayder.
Tormund was captured by the Night's Watch during the Battle of Castle Black. After Mance's death, the new Lord Commander of the Night's Watch, Jon Snow, released Tormund and asked him to help win over the remaining wildlings into an alliance against the White Walkers. Tormund was present at the massacre at Hardhome where he fought against the army of the dead.
Tormund is a trusted leader in his own right of a large warband of wildlings. He has joined his forces to those of King-Beyond-the-Wall Mance Rayder, and now functions as one of Mance's most trusted lieutenants.
He boasts of having bedded a she-bear, which he calls Shella. Ygritte insists that everyone knows he just made this story up.
When Jon Snow is taken to Mance Rayder's tent, he initially believes Tormund is Mance and kneels before him. Tormund is amused though Mance's suspicions of Jon makes Tormund wary.
As Mance's army marches away from the Frostfangs, Tormund alongside Ygritte, accompanies Orell as Orell performs scouting duties by warging into his eagle.
Tormund accompanies Mance, along with Orell, Ygritte and Jon Snow, to the Fist of the First Men, where they see the mutilated horse corpses left behind by the White Walkers after their attack against the Night's Watch. Mance commands Tormund to climb the Wall along with twenty raiders, and Jon Snow as well, and wait for his signal to attack Castle Black from behind.
As Tormund's party comes closer to the Wall, Tormund questions Jon about the "crows" patrolling the top of the Wall spotted by Orell's eagle. Jon explains that the patrols are two Builders and two Rangers. Orell then questions Jon about the castles still manned by the Watch and the number of men in the garrison of Castle Black, disbelieving Jon's claim that a thousand men defend it. When Orell and Ygritte, who defends Jon, are about to start a fight, Tormund puts a stop to it throwing Orell away. Tormund tells Jon he likes him but will kill him nonetheless if he's lying. Jon remains adamant on his lie, but Tormund remains doubtful.
Tormund's party camps at a patch of the Haunted Forest that has been left unchecked and grown close to the Wall. Tormund comments to Jon that, once, crows would cut down any the trees within a mile of the Wall. When Jon asks Ygritte if she's ever climbed the Wall she confesses she hasn't, but Tormund has done it many times. After a few minutes, Tormund approaches Jon again and gives him a climbing pick. He advises Jon to sink it deep into the ice of the Wall and make sure it holds before taking the next step. He then jokes that if he falls, he better not scream because he wouldn't want that be the last thing Ygritte remembers about him.
Tormund's party breaks into four smaller groups to climb the Wall. Tormund leads one of them, with Orell, Yrgitte, and Jon sharing the same rope. Tormund's pick breaks a piece of ice that causes Jon to briefly lose his footing. The Wildling leader jokes that he wanted to see if he could take a hit. The raiding party climb further, but a portion of the Wall breaks down, taking one of the groups to their deaths. The ice keeps breaking and Tormund nails his pick hard to prevent from falling, but Ygritte and Jon do drop, ending up dangling in the air. Tormund holds the rope with one hand but Orell begins cutting the rope to prevent Jon and Ygritte from bringing them down. Jon reaches the ice just as Orell cuts Ygritte loose. Later, the group reaches an abandoned watchpost of the Night's Watch. Ygritte and Jon reach the top as Tormund gathers his rope.
Tormund and the raiding party climb down from the Wall and begin their march to take Castle Black unaware. Some time later, the party encamps in a forest area of the Gift. Tormund jokingly gives Jon some advice on how to properly have sex with a woman before ordering the group to begin the march again
Some time afterward, Tormund's party reach the hut of a man who breeds horses for the Night's Watch. Orell advises attacking the man and killing him for his horses and gold. Tormund muses he may have good steel. Jon argues to spare the man and just take the horses, as the Watch will send less men to track down thieves than for a murderer. Tormund hopes for more men as it will be easier to kill them in the open than in Castle Black. Tormund orders his men to spread out to attack the hut. The man escapes after his horses react to a noise made by Jon to warn him.
Tormund and his men capture the man at an abandoned mill. Orell manages to hear noise inside the mill - it's Bran and Rickon Stark, along with their companions - but Tormund dismisses it as thunder from the rain that is just beginning. Tormund then questions the man about where he was riding. The man refuses to answer because he'll die anyway, and Tormund admits he's right. Tormund bares his sword to kill the man, who asks to die standing up, but Orell intervenes and demands that Jon kill the man. Tormund orders Jon to do it, but Jon hesitates. Ygritte carries out the execution after Jon is unable to. Orell goads Tormund into killing Jon to prevent him from betraying them and Tormund relents, ordering his men to kill Jon. Tormund restrains Ygritte when she tries to interfere to protect her lover. As Ygritte rages, he tells her not to die for a crow. Several members of Tormund's party, among them Orell, are killed by Jon as well as Summer and Shaggydog.
Tormund has his raiding party encamped in a stone ravine south of the Wall. Tormund chides Ygritte for failing to finish off Jon Snow; he has enough faith in her as an archer to believe that that if Jon escaped, it was because she allowed him to. Suddenly, their scouts signal that someone is approaching. Styr and a band of Thenn approach them through the ravine. Out of earshot, Tormund comments about how much he hates Thenns. Styr says his party raided a village south of the ravine and gathered meat. He says the meat tastes so much better south of the Wall, and chides Tormund for losing their warg as well as Jon. He reminds Tormund how the Night's Watch are feasting and getting fat at Castle Black. Styr suggests that Tormund taste crow meat before he dies, as a human arm roasts over a fire.
Tormund and Styr lead a raid on a village south of the Wall. When one villager attempts to attack Tormund from behind, Ygritte shoots him before he can strike and Tormund finishes him off. Styr sends a lone boy to Castle Black as a message to the brothers of the Night's Watch.
Tormund and Styr attack the settlement of Mole's Town. They slaughter all of the inhabitants, which include members of the Night's Watch who were visiting the local brothel. News of this attack reaches Castle Black, which is their next target.
Tormund takes part in the rear assault on Castle Black, being the first one to infiltrate the fortress. He kills many black brothers and then engages Alliser Thorne in single combat. They are evenly matched, but Tormund manages to seriously wound Ser Alliser, who is then pulled to safety by his fellow black brothers. Tormund continues his rampage along the Castle, despite receiving multiple wounds from arrows and swords. After all of the rear assault forces are slain, only Tormund remains and is incapacitated by a crossbow bolt from Jon Snow. He is then taken prisoner for interrogation.
After Mance's forces on the other side of the Wall are defeated by the surprise appearance of Stannis Baratheon, Jon comes to Tormund, who has had his wounds tended to by Maester Aemon. Jon informs Tormund that they will be burning the dead wildlings' bodies and asks if he wishes to say any words in their memory. Tormund scoffs at the idea, telling him that the dead can't hear them. Tormund then asks Jon if he loved Ygritte and explains that Ygritte had truly loved Jon, her constant talk of killing him being proof of that. Tormund solemnly requests that Jon take Ygritte's body north of the Wall to burn it, since that's what she would have wanted. Jon complies with Tormund's wish and soon after has Ygritte's body burned on a funeral pyre beyond the Wall.
Tormund, alongside his fellow wildlings, are present when Mance Rayder is executed by Stannis Baratheon for refusing to bend the knee. He is visibly distressed to see his king and longtime friend executed in such a brutal manner.
Once Stannis leaves the jurisdiction of the wildling prisoners to Lord Commander Jon Snow, he suggested that Tormund might be more open to forming the same alliance Mance Rayder rejected. Some time later, Jon meets with a chained Tormund to discuss what will happen with the wildlings next. Jon offers Tormund lands south of the Wall for the wildlings to settle after they have rounded up the surviving Free Folk north of the Wall in return for their help in defeating the White Walkers when they march on the Wall. Tormund is reluctant at first, and after Jon unchains him, he discloses that most of the remaining Free Folk who are north of the Wall are at Hardhome. Jon offers him horses and men to bring them back, yet Tormund states that they will also need ships in order to bring all the wildlings to Castle Black, and that Jon must accompany them to assure the Free Folk they will not simply set fire to all the ships and kill them all. Jon agrees and says he will borrow the ships from Stannis, which he later does, just before Stannis abandons Castle Black and marches on Winterfell
Days later, Tormund alongside Jon Snow, Dolorous Edd and other brothers of the Night's Watch, leaves Castle Black for Eastwatch to board the ships that take them to Hardhome.
Tormund and Jon, along with other members of the Night's Watch and the Free Folk, arrive at the Wildling town Hardhome to convince the rest of the Wildlings to join them in the upcoming war against the White Walkers and their armies of Wights.
Insisting on never being an ally with a Crow, The Lord of Bones insults Tormund for being at the side of Jon Snow, causing Tormund to beat his former ally to death with his own staff. The Wildling elders decide to gather in the Townshall to hear Jon, who quickly proposes an alliance between the Free Folk and the Night's Watch in the face of their common enemy, the undead. Having not seen Mance Rayder since he was taken prisoner at The Wall, the Wildlings question his whereabouts. Snow reluctantly informs them that he is dead and that he shot him personally, with an arrow. This angers the group, but as they move in to kill him, Tormund vouches for him, describing how Rayder was about to be burned at the stake as a warning from Stannis Baratheon, and how Snow defied Stannis by ending his life quickly instead of humiliating him. Some leaders are convinced, but others begin to leave.
A moment later, a large host of undead wights start breaking through the gates and climbing over the walls. Jon and Tormund fight alongside others to give as many people as possible an opportunity to make it to their ships. Edd Tollet, Wun Wun, and others are trapped inside the townhall, which is set upon by wights and catches fire – in the confusion, the bag of dragonglass weapons is lost. On top of a hill overlooking Hardhome, multiple White Walkers mounted on undead horses observe the battle, including The Night's King. The White Walkers deploy another large host of wights, hurling them over the cliffs above Hardhome. Jon, Edd, Tormund and the remaining defenders flee for their lives. Shielded by Wun Wun, who wields a burning log as a club before walking into the sea with them, they manage to get to the last remaining boat and quickly row out to a safe distance. As Jon and the others look on in horror, the Night's King raises his arms triumphantly; all around it, the slain wildlings rise up as undead wights.
Days later, Jon, Tormund, and the surviving few thousand wildlings from Hardhome, arrive at the Wall, before the gates of Castle Black and are allowed through by Ser Alliser Thorne.
In response to Jon Snow's death at the hands of mutineers led by Alliser Thorne, Davos Seaworth sends Eddison Tollett to find Tormund and the wildlings and get their help in the coming struggle for their lives against Thorne and his men.
After Edd finds him, Tormund leads the wildlings to attack Castle Black. Once inside, Tormund quickly kills a brother who attacks him, and with help from Wun Wun, the rest surrender without a fight. After the mutineers are detained, Tormund sees Jon's body and pays respects, though he asks Ser Davos to burn the dead as quickly as possible.
Later, Tormund witnesses Melisandre attempt to resurrect Jon, and is the first to leave the room when she seemingly fails.
When Jon awakens and is clothed by Davos, Tormund sees Jon coming from the room and explains that the wildlings think that he is a God. Tormund then remarks how he know Jon isn't a god as no God would have penis as small as his. He proceeds to hug Jon and welcomes him back. Tormund watches the execution of the mutineers in the crowd.
When Sansa Stark arrives at Castle Black with Brienne of Tarth and Podrick Payne, a surprised Tormund can't stop staring at Brienne, then witnesses Sansa's reunion with Jon, her half-brother. Tormund later shares a meal with Jon, Sansa, Brienne, Podrick and Edd. As he eats, Tormund gives Brienne a flirtatious glance. When Jon reads a letter from Ramsay Bolton, Tormund stops eating and listens intently, visibly angered at Ramsay's threats to him and his fellow wildlings. Tormund asks Sansa how many men Ramsay has. Sansa claims he has around five thousand, and Tormund tells Jon that from the thousands of wildlings they saved from Hardhome, only two thousand are able to fight.
Tormund attends a war council with Jon, Sansa, Davos, Brienne, Podrick and Edd, remaining silent while listening to Jon, Sansa and Davos's strategies. While leaving Castle Black, Tormund again gazes at Brienne with lust, leaving Brienne uneasy. Tormund assists in convincing Dim Dalba to join Jon and Sansa's cause, bringing with them the force of the wildlings, still in debt to Jon for saving them at Hardhome.
During the Second Battle of Winterfell, Tormund once again fights alongside Jon. When they are surrounded by the Umber pike phalanx, Tormund panics and sends his wildlings towards the hill of corpses. This unintentionally causes Jon to be trampled by the stampede, nearly suffocating. As the Stark forces are about to lose, the Knights of the Vale arrive, smashing Umber forces apart. While Lord Smalljon is distracted by the charge, Tormund bites his throat out, then stabs him, killing him. He, Jon and Wun Wun chase Ramsay back to Winterfell, where he witnesses Wun Wun sacrifice himself to breach Winterfell's front gates so that they can enter. He watches Ramsay shoot Wun Wun dead, and Jon defeat Ramsay in combat.
Tormund is later present when Jon is crowned the King in the North. He briefly disputes with Lord Yohn Royce, claiming that Jon invited him and the wildlings south of the Wall instead of them invading as Royce believed.
As the castles at the wall are severely undermanned, Jon sends Tormund and the Wildlings north to man them. Tormund is sent to Eastwatch, as this is the castle closest to Hardhome where the Night's King was last seen. Before leaving, Tormund sarcastically claims that it seems that he and his Free Folk are the Night's Watch now.
He later flirts with Brienne, and remarks Podrick Payne is a "lucky man" as Brienne knocks him to the ground.
A while later, Tormund is visited at Eastwatch by Jon, along with Gendry and Jorah Mormont, who have journeyed north to capture a wight to bring before Queens Cersei Lannister and Daenerys Targaryen to convince them both of the common threat of the Night King. Tormund quips that they are not the only ones and takes them to the ice cells, where he his holding Beric Dondarrion, Thoros of Myr and Sandor Clegane. During the ensuing exchange, Tormund learns Jorah's real name and deduces he is the son of Jeor Mormont, who hunted the wildlings "like animals", though Jorah retorts that the wildlings did the same to the Night's Watch. Hostilities are quickly put aside when they all accept they are on the same side and Jon frees the Brotherhood. Tormund joins Jon's expedition North to capture a wight.
During the expedition, Tormund exchanges banter with Gendry and Jon Snow. When Jon explains that Daenerys will only ally with them if he submits to her rule, Tormund remarks that Jon has grown prideful and independent as a result of his time spent with the Free Folk. However, Tormund remarks that standing on pride can be a dangerous thing, using his late friend and leader Mance Rayder as an example. He later banters with Sandor Clegane, the latter shooting down the idea of Tormund winning Brienne's heart. As they get closer to a pack of wights, they are attacked by an undead polar bear which mortally wounds Thoros but which is killed by Jorah. Later, they ambush a pack of wights led by a White Walker, and as soon as Jon slays the Walker, all but one of the wights fall lifeless. As the wight screams for help and Jon instructs Gendry to return to Eastwatch and send a raven to Daenerys, Tormund implores him to leave his warhammer behind as it will slow him down.The party end up stranded in the middle of a frozen lake where Thoros eventually dies of his wounds. When the lake freezes over again, a fierce melee ensues. Tormund destroys many wights with a dragonglass battleaxe, but he is eventually tackled by two wights, who almost drag him underwater. He is saved at the last minute by Sandor. Daenerys eventually arrives and saves them with her dragons, though Viserion is killed by the Night King in the process, and they make it back to Eastwatch. Tormund helps them load the wight into a boat, and shares a farewell nod with Sandor in gratitude for saving his life.
Some time later, Tormund and Beric are manning Eastwatch's defenses when the army of the dead arrives, led by the Night King astride a newly-reanimated Viserion. When Tormund sees the dragon bearing down on them, he screams for everyone to run. Tormund watches as Viserion burns right through the Wall, causing Eastwatch to collapse. Whether Tormund survives these events is currently unknown.
A legendary wildling leader who supported Mance Rayder, Tormund is also known as "Giantsbane". Swayed by Jon Snow's promise that the remaining wildlings would have safe passage through the Wall, he traveled with Jon to Hardhome to make their case before the Free Folk elders. The two narrowly escapedwhen the camp was attacked by White Walkers and the Army of the Dead, and the wildlings slaughtered at Hardhome then joined its ranks. Tormund has joined Jon Snow and Sansa Stark's mission to regain control of the North.