I really like the sentence structures and speech styles you use for Spada. All the improper speech like "ain't" and such really tie into his character. It's a jerk having no English voice to work off of but I think you've pretty much nailed the localization aspects.

But I'd love to see his more... obnoxious sides. He does have an ego and I think he'd show it off just a bit more. (Though I don't know his canon point sooooo that could impact sooomething.) Also, hit on girls more. He's supposed to be the "lover" of the group. Let's see it. ;)