Last week, HBO released two new trailers orHouse of the Dragon Season 2, a trailer for the Black Council and a trailer for the Green Council and while the dueling trailers were themselves a surprise for fans of the series based upon the works of George R.R. Martin's works, there were some other details in the trailers as well — including the introduction of a new Stark. Speaking with EW, House of the Dragon showrunner and co-creator Ryan Condal broke things down and explains the introduction of Cregan Stark.