Design: Take a closer look. That dude has the metal theme down.
Combat: His son Karsh sort of outdoes him in terms of kickassery, but come on..."Balls of Iron".
Tilt: Zappa has some good scenes, like wildly resisting the closure of his shop, expressing disbelief at seeing Karsh alive (and the dramatic irony is emotionally painful to endure), and uniting with the old Deva guard in one of the endings. I'd love to see his tenure (well, and that of the other Devas) on the Zenan mainland. I bet he was pure awesome. In Cross, his power is diluted by Karsh and Viper, who each share different traits with him and execute them more uniquely. But Zappa's still a good, memorable character.
B
Without thinking, I could have put C, but then I would have been no better than the depressive downvoter clique who plague these polls with weird, indignant discomfort.