- "Across the Narrow Sea your books are filled with words like 'usurper' and 'madman' and 'blood right'. Here our books are filled with numbers. We prefer the stories they tell. More plain. Less... open to interpretation."
- ―Tycho Nestoris to Stannis Baratheon
Shortly after Tommen Baratheon's coronation, Tycho and two of his colleagues receive Stannis Baratheon and his Hand, Ser Davos Seaworth, who ask them to fund their continuing campaign in Westeros. Tycho points out their weak position and is ready to dismiss them when Ser Davos speaks up, relating how he came into Stannis' service, how the latter is a just man who keeps his word, and how he is the best chance for the Iron Bank to get its money back upon the chaos that would follow the death of the elderly Tywin Lannister. This seems to convince the banker and his colleagues, as they agree to fund Stannis.
Tycho receives Mace Tyrell when the latter arrives in Braavos to renegotiate the kingdom's terms with the Iron Bank. Though polite, Tycho seems to dislike Tyrell, whose bumbleness clashes with Tycho's polite dignity. On the way to the bank, Mace offers him fine wines from the Arbor as a token of esteem but Tycho politely declines. After negotiating with Mace for some time, Tycho leads his guest outside to bid him farewell, but Mace keeps talking, stating that singing is a skill that anyone can learn. To prove that, he immediately starts singing a song, much to Tycho's disapproval.
After Cersei Lannister's coronation, Tycho is sent to Westeros in order to get back the money the Crown owes the Iron Bank. He meets with Cersei and the two discuss Cersei's position in the world and in the war against Daenerys Targaryen. During the conversation, Tycho admits that the Iron Bank had made strong profits in the slave trade which has now been destroyed by Daenerys. Cersei actually manages to convince Tycho to stay in King's Landing for a fortnight - promising that he will return to Braavos with her debt paid in full.
Tycho meets with Cersei for a second time, who compliments her for paying back much of her massive debts in a single payment, noting that he does not believe the Iron Bank has ever been paid back in such a manner. He flatters Cersei by telling her that she seems to be almost surpassing her father in this regard; Cersei thanks him for his kindness, addressing him as a lord, but Tycho points out he is neither kind nor a lord, but merely an employee of the Iron Bank. Tycho tells Cersei that some of his colleagues may be disappointed as they were interested in bringing up Cersei's interest rates. Nonetheless, he suggest that the Iron Bank may be able to invest in Cersei's venture to reestablish her control over the Seven Kingdoms. Cersei informs Tycho that her Hand, Qyburn, has reached out to the Golden Company, a powerful sellsword company in Essos. Tycho assures Cersei that they will support the Iron Throne - once they get their gold.
|Season Four appearances|
|Two Swords||The Lion and the Rose||Breaker of Chains||Oathkeeper||First of His Name|
|The Laws of Gods and Men||Mockingbird||The Mountain and the Viper||The Watchers on the Wall||The Children|
|Season Five appearances|
|The Wars To Come||The House of Black and White||High Sparrow||Sons of the Harpy||Kill the Boy|
|Unbowed, Unbent, Unbroken||The Gift||Hardhome||The Dance of Dragons||Mother’s Mercy|
|Season Seven appearances|
|Dragonstone||Stormborn||The Queen's Justice||The Spoils of War||Eastwatch||Beyond the Wall||The Dragon and the Wolf|
Behind the scenes
- Tycho narrates the Histories & Lore videos "The Iron Bank of Braavos" on the Season 4 Blu-ray and "Braavos" and "The Faceless Men" on the Season 5 Blu-ray.
In the books
In the A Song of Ice and Fire novels, Tycho Nestoris is described as a tall, stick of a man with long legs. He has a gaunt face with a thin rope of a beard growing from his chin which hangs down to his waist. He wears expensive robes of a sober dark purple color, trimmed with ermine fur. Tycho is not introduced until the fifth novel, A Dance with Dragons. It is not him but another representative of the Iron Bank, Noho Dimittis, who speaks with Cersei about the debt of the Crown; that meeting happens in the fourth novel, A Feast for Crows, long before Tycho meets Stannis.
Since Cersei refuses to pay the Iron Bank, Tycho Nestoris travels to Eastwatch-by-the-Sea with three ships and then travels to Castle Black with Queen Selyse and Shireen to meet Stannis, whom he does not know has already left. While he is at the Wall, Tycho meets Jon Snow, who negotiates with him for a loan to purchase food for the winter. He also borrows Tycho's ships for the mission he assigned Cotter Pyke - bringing the wildlings from Hardhome.
Shortly afterwards, Alys Karstark (the daughter of Rickard Karstark) arrives and tells Jon that her great-uncle Arnolf, the castellan of Karhold, pretends to be Stannis's ally but collaborates with the Boltons. Jon immediately sends Tycho with guides to find Stannis and warn him of the traitor in his host.
Tycho and his escorts travel light, therefore they make it to Winterfell faster than Stannis's host (which still camps in an abandoned crofters' village, three days away from the castle). Beneath the walls of Winterfell Tycho meets Mors Umber and his men, who have found Theon and Jeyne Poole. Mors hands them to Tycho, and they go to the village. Asha and Ser Clayton Suggs are the first to notice them. Asha finds it very absurd, to meet a Braavosi banker on such circumstances.
In a sample chapter from The Winds of Winter, Stannis and Tycho reach an agreement. Stannis makes plans to send Tycho back to Castle Black, alongside Asha, to ensure his safety under Jon's watch. He assigns Ser Justin Massey and Alysane Mormont to escort them; after they reach Castle Black, Ser Justin will accompany Tycho on his way back to Braavos, where he will collect the money from the bank and hire ships and sellswords.
With regards to Stannis visiting the Iron Bank of Braavos, the series producers stated that they thought it was important to physically introduce Tycho earlier instead of later. One of Bryan Cogman's initial ideas for "The Laws of Gods and Men" was to have Tycho come to Dragonstone to treat with Stannis, not the other way around: this was also changed to have Stannis visit Braavos, because they realized it was also important to physically introduce the city of Braavos and the Iron Bank itself as soon as possible. Cogman also felt that it made more dramatic sense for Stannis to have to come to Braavos to essentially beg for money, because at the moment he is losing the war, so logically the Iron Bank doesn't think he is significant enough anymore to go through the bother of sending an envoy to meet with him in person. As a result, Tycho's scenes in Season 4 have no direct counterpart in the third novel, though they are a condensation of running subplots involving the Iron Bank which are discussed at council meetings, and thus Tycho does not travel to Castle Black and has not interacted with Jon Snow. Tycho's return in the seventh season represents a complete 180 from his actions in the books, working with Cersei of all people. Since the series has moved past Stannis's defeat, its possible that the Iron Bank will reevaluate its preferred candidate in the books as well as the series.