For me, the FF villains are a mixed bag. You've got Kefka, Sephiroth, X-Death, Kuja, and Seymour who all interact with the characters through the course of the game, and Chaos, Zeromus, Dark Cloud, and Ultimecia whom you only get to confront at the end of the game. And then there's the Emperor who gets whacked by two swipes from a Blood Sword and sucks despite having "created" a (potentially?) interesting setting.

I generally prefer the type of villains that would fit in the former group, though that doesn't mean I necessarily like or dislike individuals from either group (I dislike Kuja for example, and like Ultimecia).

The worst for me is Dark Cloud. And I would group Necron along with her. Both are sort of embodiments of existential concepts rather than having true personal motivations. Both are just sort of *there* at the end and you have to beat them--Dark Cloud was hinted I suppose as the power that "controls" Zande (who himself is a woefully underdeveloped villain), and stopping the merger/takeover with the Dark World was the point of the game, but the actually character/entity *Dark Cloud* had zero development storywise. I like my final bosses to be someone I hate, or love to hate. Just being *there* before the final movie/credits is not good enough for me.

Mind you, I haven't played the DS remake of FFIII, just the "original."