About Delling... What i remember about him, is that he was a dictator that everyone hated. He would be evil even if Ultimecia never existed.
And many people think that the relation between Ultimecia and Edea is like the relation between Zemus and Golbez. But they are wrong. Golbez's mind was being controlled by Zemus, so, Golbez was a villain during a time in the game. Edea's body was possesed by Ultimecia, so, Edea was never a villain. The word "possesed" make all the difference.