Lamest FF villian ever... hmm.. I'd have to say (out of the FF games I have played) that would have to be Biggs and Wedge (FFVIII) They were lame in a good way, though. Weak, but f******g hilarious. "Lame" villians because you ended up liking them.
Palmer was just an ass... he was a good villian because you really wanted to see his brown suited arse dead.