Ok, I know that the Darth Vader write up is lacking in comparison to the Orochi one but I know both these characters and I cannot vote for Orochi, the bloke is sitting there with Kaido and Linlin as amongst the worst antagonists of One Piece.
He rose to power because of his family relative's plot combined with Kaido's strength. He piggybacked off of everyone else around him. Despite barely doing anything himself, he still manages to succeed and achieves everything he wanted to..... and then stays so he can be killed.
Last I checked, his main goal was to punish the denizens of Wano and run the whole country into the ground. Mission accomplished for two whole decades.
Except there is that whole prophesy thing about some meddling samurai coming back to fuck shit up.
Now this would be a problem if Orochi hadn't already accomplished his goals but he has. He can retire and allow Kaido to deal with this samurai nonsense but nope, Orochi willingly stays to die.
He is even willing to throw hands with Kaido over the island that he deliberately ran to ruin despite the fact Kaido is going to continue ruining the country just as Orochi himself wanted to.
Why are you directly challenging the bloke rumoured to be the mightiest motherfecker alive when he is going to continue doing to a land what you wanted to do anyway?
Literally the only reason Orochi ruled for 20 years is because Kaido allowed it, yet Orochi is apparently too stupid to process that and proceeds to talk smack to Kaido's face when surrounded by the entirety of the Beast Pirates' heavy hitters.
Literally nobody takes Orochi seriously. Kaido beheads him without a second thought and the Scabbards decide that they have more personal beef with Kaido than with Orochi and treat the latter like an inconvenience to be swatted. Feckin Raizo is about to have a battle with Phallic Mic the Morning Wood Ninja but Orochi gets unceremoniously neg diffed by everybody.
Orochi is a joke villain. Damn Wapol was treated as more of a legitimate threat than him.