In The Prologue, we learn that the Knight is an exemplary person: a "verray, parfit, gentil" knight. He is a brave warrior who has fought in many battles, including in Russia, Prussia, Granada, and Turkey, in both Christian and in heathen lands. He has won duels and fought on both land and sea. In fact, he wears bloodstained clothes: his status as a noble warrior cannot be in doubt.
Second, he has a temper that is "as meeke as is a mayde" (as gentle as very young woman) and he never speaks vilely. He is a high status person who uses his rank to impose order, making peace between the Host and the Pardoner when the Pardoner starts to view his fellow Canterbury travelers as marks to whom he can sell his false relics.
The Knight also has an excellent son in the Squire, indicating he has been a good father and role model.
The Knight's tale is courtly and dull, irritating the Miller into telling a bawdier and much more often read story. While "parfit," or perfect, the Knight might remind us of Jane Austen's dictum: "pictures of perfection . . . make me sick." The Knight is a model of courtly decorum but we as readers tend to prefer to spend our time with characters like the lively and imperfect Wife of Bath.