The series is still pretty new so they didn't show up yet.
Still, the villains I have planned so far are
A insecure spoiled brat that can't bear the idea of the protagonist having something even he can't buy (real friends, motherly love, intelligence Etc.
Dragon nazis
"You either have free will and privacy or you have safety and happiness, you can't have both"
"How to get rid to dragon nazis in three easy steps! step 1: Kill a guy so his greedy nazi sister inherits the throne. Step 2: ?????? Step 3: Profit."