Are you looking for a sweater with a "graph" of a Dragon or Knight to knit into the sweater, or for a sweater with... say ridges along the sleeve to make the dragon scales and such?
I have lots of patterns from my Grand mother that have "dinosaur" graphs that could very easily adjusted into a Dragon. They are very simple to knit and I have several vest type patterns as well.
I don't have anything fancier.
But the good news is you could created your own graph if that is what you are looking for!