The latest and most humorous offering in the “Game of Thrones” universe follows the hulking, lovable Ser Duncan, who may or may not be a real knight.

HBO’s A Knight of the Seven Kingdoms – the Game of Thrones spin-off based on George R.R. Martin’s beloved Tales of Dunk and Egg – is finally here, premiering January 18 on HBO and Max (January 19 in m...