A Game of Thrones

When his father departs for King's Landing to serve as the Hand of the King for Robert Baratheon, Robb becomes acting Lord of Winterfell. Following his father's arrest for presumed treason, he calls his banners and marches south with an assembled Northern army in attempt to free his father. Additionally, Robb seeks to relieve the besieged Riverlands, dominion of House Tully, which have fallen under attack by forces of House Lannister after his mother imprisoned Lord Tyrion Lannister for the suspected attempted murder of Bran Stark.

To secure safe passage at the vital crossing of The Twins, Robb consents to marrying one of Lord Walder Frey's daughters or granddaughters as negotiated by his mother. After crossing the river, he surprises and destroys the Lannister army besieging Riverrun, capturing Ser Jaime Lannister during the Battle of Whispering Wood. Upon hearing of his father's execution on the orders of King Joffrey Baratheon, Robb is crowned the King in the North and King of the Trident by his bannermen.

A Clash of Kings

Robb continues to win crushing victories against Lord Tywin Lannister's armies, and earns the nickname The Young Wolf for his ferocity in battle. With the War of the Five Kings raging, he sends his mother to negotiate an alliance with King Renly Baratheon, but Renly is assassinated by his brother, King Stannis Baratheon with blood magic from the priestess Melisandre. Robb invades the Westerlands in order to strategically assist Stannis' campaign against the Iron Throne. He also sends Theon Greyjoy to Pyke to broker an alliance with Theon's father Lord Balon Greyjoy, ruler of the Iron Islands. However, Balon declares himself king and decides to invade the North instead. Theon betrays Robb, seizing Winterfell by surprise. Theon is believed to have murdered Robb's youngest siblings Bran and Rickon, though in reality they have escaped and gone into hiding.

A Storm of Swords

During an assault in the Westerlands, Robb is wounded and learns of the apparent deaths of his brothers at the hands of his closest friend. Falling ill due to mourning and injury, he is cared for by Lady Jeyne Westerling and takes her maidenhood. To preserve Jeyne's honor, Robb marries her, rescinding his previous marriage arrangement with House Frey, causing them to desert his army.

Following King Stannis' defeat at the Battle of the Blackwater, Robb withdraws from the Westerlands and returns to Riverrun to attend the funeral of his grandfather Lord Hoster Tully. Robb learns that his mother has secretly released Jaime Lannister as an exchange for her daughter Sansa, who remains a hostage in King's Landing. This leads to the mutiny of Lord Rickard Karstark, whose two sons were slain by Jaime, forcing Robb to execute Rickard and subsequently lose House Karstark's support. With his army dwindling, Robb tries to repair the alliance with the Freys by bargaining his uncle Edmure Tully to marry Lady Roslin Frey. The Freys demand that Robb personally attend the wedding at The Twins as an apology.

Robb learns that King Balon Greyjoy has died and he decides to lead his army to retake the North immediately after the wedding is complete. He soon learns that his sister Sansa has been forcibly married to Tyrion Lannister. To prevent the Lannisters from claiming Winterfell through Sansa's child by Tyrion, Robb, against the opposition of his mother, disinherits Sansa and signs a decree legitimizing his bastard half-brother Jon Snow as his heir if he happens to die with no children, and requests the Night's Watch release Jon from service. Robb then entrusts the decree to Lord Galbart Glover and Lady Maege Mormont, sending them to make contact with Lord Howland Reed so that he can launch a coordinated attack to recapture the strategically crucial Moat Cailin.

At The Twins, the Northern convoy, who are treated with bread and salt (thus promised guest rights and safety), are betrayed and massacred by House Frey and House Bolton during the wedding feast in an event orchestrated by Tywin Lannister, the Red Wedding. Robb is shot by crossbow bolts multiple times, and then personally murdered by his chief vassal Lord Roose Bolton, who has secretly defected in exchange for House Bolton gaining dominion over the North from House Stark. After his death, the Freys mutilate Robb's body by sewing the head of his dead direwolf Grey Wind onto his decapitated corpse. His mother, as well as his entire northern army (save for the Boltons and Freys), are also murdered.

Season 1

Robb is the eldest son of Lord Eddard Stark and Lady Catelyn. When King Robert Baratheon summons Eddard to King's Landing to serve as Hand of the King, Robb becomes acting Lord of Winterfell. After his father is arrested for apparent treason, Robb summons the Northern bannermen and assembles an army of 20,000 in an effort to rescue his father and aid the Riverlands, which have come under attack by the armies of House Lannister. Catelyn brokers an alliance between the North and House Frey when Robb consents to marrying one of Lord Walder Frey's daughters, allowing the Stark army to strategically cross the river at the Twins and launch a surprise engagement against the Lannisters, successfully capturing Ser Jaime Lannister in the process. After the death of King Robert and the execution of Eddard Stark on the orders of King Joffrey Baratheon, a bastard born of incest between Jaime and Cersei Lannister, the Northern and Riverland lords declare their independence from the Iron Throne and proclaim Robb as the King in the North.

Season 2

Robb proves to be a skillful military commander and he wins a succession of battles against Lord Tywin Lannister's forces, earning him the nickname "The Young Wolf". He sends his closest friend, Lord Theon Greyjoy, to the Iron Islands to broker an alliance with Lord Balon Greyjoy, Theon's father. In exchange for Greyjoy support and the use of their naval fleet, Robb intends to recognize the Iron Islands' independence. Robb also sends his mother to parlay with Renly Baratheon, who has declared himself king and has amassed an army of 100,000. However, Stannis Baratheon, having also declared himself king via the lawful line of succession, prepares to engage Renly. Catelyn is successful in brokering an alliance with Renly, but he is assassinated by Stannis' using blood magic. Theon fails to convince his father to ally with Robb, and instead Balon declares himself a king and launches an invasion of the North. Theon decides to capture Winterfell to earn his father's favor. Robb offers amnesty to the Ironborn invaders on the condition that they hand over Theon. Robb soon meets and falls in love with Talisa Maegyr, a foreign healer from Volantis.

Stannis assaults King's Landing at the Battle of Blackwater Bay and is defeated when Tywin, joined by the armies of House Tyrell via a newly brokered alliance, arrives and stops the city from being sacked. While Robb travels to the Crag to negotiate a surrender, Jaime escapes and kills the son of Lord Rickard Karstark before he is recaptured. Catelyn stops Rickard from killing Jaime but discontent within the Stark army begins to grow. Additionally, despite his mother's protest, Robb breaks his engagement with the Freys and marries Talisa. As a result, the Freys abandon the Stark army.

Season 3

Believing Jaime to be her only chance of seeing her daughters again, Catelyn frees him and commands Brienne of Tarth to bring him to King's Landing in exchange for Sansa Stark. Furious, Robb has his mother imprisoned. He leads his army to capture Harrenhal, but finds that hundreds of his imprisoned bannermen have been slaughtered. Upon learning of the death of his grandfather, Lord Hoster Tully, Robb returns to Riverrun for the funeral. Robb's uncle and the new Lord of Riverrun, Edmure Tully, is scolded by Robb for previously disobeying a command when he attacked Ser Gregor Clegane's forces. While at Riverrun, Robb executes Rickard Karstark after he murders two teenage Lannister squires. As a result, the Karstarks abandon his army. In order to regain an alliance with the Freys and bolster his army, Robb arranges for the reluctant Edmure to marry one of Walder Frey's daughters. With the advisement of his mother, Robb prepares to invade Casterly Rock, the domain of House Lannister.

At the Twins, Walder Frey provides guest right to Robb, his family and bannermen. The wedding commences but Walder betrays Robb in an event secretly orchestrated by Tywin Lannister, Walder, and Lord Roose Bolton. Talisa, pregnant with Robb's child, is stabbed in the stomach and killed. Robb's entire army (save for the Boltons and Freys), are murdered. Robb himself is shot with multiple crossbow bolts, taunted by Walder, and subsequently executed by Roose with a knife to the heart. Catelyn kills Walder's wife but she too is executed when her throat is slit. Robb's corpse is decapitated and his direwolf Grey Wind's head is sewn on in its place, and the corpse is then paraded around as the Stark forces are slaughtered. Robb's great-uncle, Ser Brynden Tully escapes, but Edmure is held captive and Walder becomes Lord of Riverrun. Roose once again swears fealty to the Iron Throne and is granted the title of the Warden of the North. This event comes to be known as the Red Wedding.

Legacy

House Lannister strips House Stark of all lands and titles after Robb's failed rebellion against the Iron Throne. The Boltons recapture Winterfell from Theon, expel the Ironborn from the North, and begin to rule with an iron fist. Sansa is forced to marry Roose's legitimized bastard, Lord Ramsay Bolton. Tywin and Roose are later both killed by their own sons. The remnants of Robb's army, now led by Brynden Tully, recapture Riverrun and hold it until Jaime Lannister retakes it and Brynden is killed. Years later, Arya Stark returns to Westeros, murders Walder Frey and his sons, and poisons all of his male descendants, ultimately exterminating House Frey. Sansa escapes from the Boltons and she and Jon Snow successfully destroy House Bolton and retake Winterfell. Jon is crowned the King in the North, restoring Stark rule in the process. With the arrival of Queen Daenerys Targaryen, Jon declares fealty and becomes Warden of the North. However, following her death and Jon's banishment, the North is given permission by the newly appointed King Bran Stark to regain its independence, and the Northern lords declare Sansa the Queen in the North.