Worst Villain in One Piece?

It would be great if you guys would give an explanation to who you picked and why. This is mine (I'm only at Impel Down).

Gecko Moria ticked me off because he's just sort of lame. The entire arc was unnecessary as a whole, and he could have been beat faster. Like for a Warlord, I guess I was expecting him to actually be powerful, when really he just puts a shadow into a beast, and doesn't even make sure his opponents are dead. As well as plot armor being the only real reason he wasn't beat faster.