Tycho Nestoris

"And you feel your blood gives you a claim on our gold?"

- Tycho Nestoris to Stannis Baratheon

Tycho Nestoris is a character in the fourth season. He is portrayed by Mark Gatiss and debuts in "The Laws of Gods and Men".

Biography
Tycho Nestoris is a representative of the Iron Bank of Braavos. He is a rational man, more interested in numbers than in words, reasoning that the former are less likely to deceive than the latter.

Season 4
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.

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. He is not introduced until the fifth novel, A Dance with Dragons.

Tycho goes to meet Stannis without any prior correspondence. Davos is not present at their meeting. Tycho grants Stannis the funds he needs without any questions about his army or food supplies or claim to the throne.

The questions that Tycho asks Davos in the show are maybe based on another scene in the novel where Davos tries to enlist the support of Lord Manderly.