He's just such an ass to absolutely everyone, yet portrays himself as suave and is genre savvy enough to not get screwed over by overconfidence; he only gets screwed over because Sephiroth is just better than he could ever be. It's just enjoyable having him on-screen, because he does something that's either humorous or cool every time and isn't completely insufferable because he's proven that he's competent and insults the incompetence of others, like Heidegger.
Also he named his dog 'Dark Nation'. Pretty freaking boss.
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http://24.media.tumblr.com/tumblr_lvb2chGY8D1qm7gfoo1_500.jpg
SuperNiceDog? More like SuperChillGuy. Who is better than me at brackets by a mile.