Auric Goldfinger.
To this day,he has not yet been topped IMO.You can keep your cat stroking villains,voodoo bad guys,island dwelling assasins,space conquering entrepeneurs,bitter ex licence to kill agents,media crazy moguls,terrorists with bullets in their brains etc [not that I dislike these villains],but Auric Goldfinger stands imperially above them all IMO.
His plan was simple yet brilliant.His manner was charming,yet sinister.His greed was unlike any I've ever seen.He'll do ANYTHING to win,be at a simple game of cards,a golf match,or avoiding paying his debts to his criminal underworld buddies.
He has one of the strongest and most fanatically loyal henchmen ever.And his methods of smuggling gold abroad is genius.Melt it down and make it part of his rolls royce.Brilliant.
Don't even THINK of betraying him.You could wind up a gold painted corpse.Cross him and he'll try and fry your nuts with a laser.
Auric Goldfinger is a god amongst Bond super villains.