Prince Daemon Targaryen is a man of action, and that suits the man who portrays him on “House of the Dragon” just fine.

“On an acting level, I was always quite pleased that I wasn’t in loads of the big table scenes,” said Matt Smith, who shares his royal character’s distaste for the minutiae of sitting down and running the Seven Kingdoms of Westeros. “They’re often the ones that are hardest to shoot — the ones that can drive you bonkers. I preferred being on a horse with a sword in the hand.”

Of course, starring in “House of the Dragon” — the prequel series to HBO’s blockbuster “Game of Thrones,” based on the fantasy novel “Fire & Blood” by the author George R.R. Martin — means riding far more exotic mounts than mere horses. As the potential heir to the Targaryen dynasty and its royal seat, the Iron Throne, Daemon is a dragon-rider, and a dangerous one at that.

Created by Martin and Ryan Condal, who serves as a showrunner along with the director Miguel Sapochnik, “Dragon” chronicles a turbulent time in the history of the Targaryens and their fiery steeds, when a crisis of succession threatens to tear the family, and the realm they rule, apart. As the younger brother of the ruling King Viserys (played by Paddy Considine), Daemon is at the heart of the conflict, and emerged in Sunday night’s series premiere as one of the show’s most charismatic characters.

And if you found him fascinating, you’re not alone. In a phone conversation last week, a pensive Smith, who has had earlier star turns in other major franchises like “Doctor Who” and “The Crown,” openly wrestled with Daemon’s duality — agent of chaos one moment, ferociously loyal and loving the next.

“There’s a sort of folklore among ‘Fire & Blood’ fans and ‘Game of Thrones’ fans that when a Targaryen is born, you flip a coin,” he said “One side is greatness and the other side is madness, and you don’t know which side it’s going to land on.”

“With Daemon,” he continued, “the coin is still in the air.”

I interviewed House of the Dragon star Matt Smith for the New York Times.