Where are Zande/Dark Cloud?

But worst as in didn't do a very villian job? I'll pick whichever one caused little/no destruction whatsoever then...Seymore, did he do much besides kill his dad and a few other people?

It's funny that you put FFIV's villian as Ze(ro)mus, but you don't list FFIX's villian as Necron. They are both pretty much out-of-nowhere and nonexplained.