"I feed on the greed of the powerful."
Adion seeks one and only one thing, corrupt and powerful people. From the greed of these people, Adion can grow bigger. This makes it his one and only goal, while Adion ignores small villages and people with good hearts unless they can bring him closer to the corrupt.
Adion, to humans, may seem mischievous and surprisingly gentle, if he seems at all. Like all demons, Adion loves to destroy things, but he does have some self control and sees no point in destroying things as he can't feed on hate.
I could not even fathom some of the things that Adion has done in his time. He is a demon that has not approached those who would normally kill them.