No, the Night King is not a Targaryen

Spoiler alert: Spoilers ahead for Game of Thrones season 8, episode 3, “The Long Night.”
Game of Thrones’ most recent episode, “The Long Night,” was probably the final showcase of the Night King, the enigmatic progenitor of the White Walkers. But he went out in style, riding his undead dragon into one-on-two aerial combat, raising a whole new Army of the Dead to replace the army he lost, and shrugging off a blast of dragon fire to the face before Arya Stark finally