Benjamin Evan Ainsworth as Daeron Targaryen in House of the Dragon season 3 episode 8. Daeron flies his dragon Tessarion in the first; in the second, which happens some time later, both he and his dragon meet their demise. The House of the Dragon season 3 finale roughly lines up with the First Battle of Tumbleton from the book, with a few major differences. After all, showrunner Ryan Condal teased earlier in the season that Daeron's dragon Tessarion has a "great role to play in the story yet to come." The House of the Dragon season 3 finale is now available to stream on HBO Max.