The news finally broke that Mark Gatiss will be portraying Tycho Nestoris in Game of Thrones Season 4, and even the biggest fans of the A Song of Ice and Fire books may need a little refresher course on just who this character is. Well don’t worry, we’ve got you covered!

Warning: This article contains spoilers from the A Song of Ice and Fire book series. Click away now if you don't want to know!

Tycho is a representative from the Iron Bank of Braavos, one of the Free Cities of Essos. In the fifth book in A Song of Ice and Fire, Tycho shows up at the Wall to meet with Stannis (who himself hangs out at the Wall next season) to negotiate the repaying of the Iron Throne’s debt to the Iron Bank (we wonder if they paid the iron price?).

Apparently, the Iron Throne owes a ton of money to the Iron Bank — something that was alluded to briefly on the show already. The debt was being repaid with regularity during King Robert’s reign. However, by this point in the books Cersei is in charge, and the account has gone delinquent. It’s Tycho’s hope that Stannis will make for a better client. If Stannis agrees to repay them, then Tycho is willing to lend him more money to help him actually secure the throne. Only problem is, when Tycho shows up at the Wall, Stannis is no longer there. He’s taken off to battle the Boltons at Winterfell, so Jon Snow uses the opportunity to get a nice loan for the Night’s Watch.

If none of this is making any sense to you, that’s OK. A lot happens in the books before Tycho comes into play. The show as of right now still has about two books worth of story to get through before Tycho should even show up, so we’re curious what he’s doing there so early in the game. We’re also wondering why Mark Gatiss, who is a comparatively big star for GoT, is playing such a minor role. Our suspicion is that the showrunners plan on either expanding Tycho’s role significantly (pretty much a given at this point) and/or combining his role with some others from the books. We’ll just have to wait until next season to find out!

Are you excited to meet this character? Sound off in the comments below!

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