Quote Originally Posted by HowlingMonkey
Ultimecia has no clear motivation. She is simply Ultimecia. In short, she's a badly developed character who doesn't even qualify as being two-dimensional, let alone three.

I don't think she was badly developed. I think she is the way they intended her to be. They didn't give her a huge back up story because it wasn't nessessary to story plot or squall and rinoa. It also gave her a huge mystery and made you fear her because you knew nothing about her. She speaks very little, but what she says is in the script to confirm that she is just an insane bitch hellbent on world domination.