If ever you need a random-roll for what type of knight a character faces in tournament, or just new ideas, what follows is a great big list (some with further descriptions and nicknames) of different sorts of knights.
Some of the names of locations & faiths are from Midian, but these are easily changed to fit different campaign settings.
These Trolls travel land and sea in an eternal search for their next war. The Host of Battle—for they have no other name for themselves—is part mercenary army, part ethnicity.
In Azur, the streets are crowded, and the PCs' poor grasp of Azuran makes it hard for them to find out why. Still, they shoulder their way through the crowds, trying to get to the house of the renowned wizard they seek, when suddenly they realise they are standing very much alone. The crowds have ceased their talking and their gazes are fixed on the PCs. The imperiously clothed man standing before them smiles and speaks in Azuran: "Ah! Volunteers! And so eager too!"