Isn't Vesna Valentine chaotic evil anyway? Maybe neutral evil or something. He tried to use daimons to get revenge or something on Madina. A bit strange...but eh, what can you do about that.
Yes. He is basically evil, dunno whether lawful or chaotic. And yes, he does have a bad habit of trying to get revenge on people, and failing.
Though he did steal, what, 1800 gold from the Zuma?