As the Sinistral of Terror, Amon plays fits his role perfectly. He is a cross between Erim and Gades, being almost as strong as Gades, and almost as adept at magic as Erim. He will do anything that Daos tells him to do, and he will do it well. Being much more well-rounded then either Erim or Gades, he can injure your party quickly if you are prepared. He is still highly susceptible to the Mirror spell, however, and using it is to your utmost advantage. He will use his spells regardless of weather you have a Mirror or not, and he extra damage this does to him will grant you a quick and easy victory. Just dont let any of your mirrors run out... he uses only Group spells, and they can be rather nasty to an unprotected member, especially Aguro.