sazh is easily the best...the only thing holding him back is his skin color and because of it, he does not get much attention or any larger roles in 13-2 and more then likely next to nothing again in LR.
50 lines is actually quite a bit. Jihl only got about four lines.
Okay, I probably shot super-high there, but my point is that guy doesn't exactly get a lot of fleshing out as a villain. He gets some phoned-in redemption by giving a dramatic speech after you beat him.
It's not a JRPG until you kill a god. http://somestatic.tumblr.com Don't mess with Mrs. Chu; she'll put you in the soup.