In the One Piece world and with the recent events of the second part of Reverie, fans have come to learn that the Shichibukai system (that existed as long as the series itself) was abolished. For the casual reader, this might not seem like much. But true fans know the raging undercurrents brewing due to this abolishment, and the future implications it will have on the plotline.
That being said, the Shichibukai system was originally established to keep a balance between the three great powers. Little did the world government know that as a result of them turning a blind eye to the crimes of the Sshichibukai, some Shichibukai would abuse that loophole and bring down evil to the world. The two most notorious Shichibukai who blatantly abused their powers are most certainly Crocodile and Doflamingo, but who exactly of the two excels more in the way of evil?
10 Doflamingo: Killed His Family
One of the most hideous acts committed by the Heavenly Demon is killing members of his own family. Not only did he kill both his father and brother, but he also did so without feeling a sense of remorse.
When a person kills his family without feeling even a bit remorseful, you know that they have a ‘bright future’ down the path of evil. And sure enough, Doflamingo cemented his position as one of the evilest individuals introduced to the series thus far, if not the evilest.
9 Crocodile: No Bottom line
The way that Sir Crocodile operates is one that can’t be more straightforward. As fans have witnessed in the Alabasta arc, he has no apparent bottom line. He is willing to commit all sorts of atrocities if that means his goals and dreams will be realized.
What’s even more fascinating about Crocodile is that whenever he commits a lowly crime, he does so with zero shame-- nothing can strike a blow to his confidence.
8 Doflamingo: No Qualms About Massacring An Entire Kingdom
You would think that after ruling a kingdom for more or less a decade, Doflamingo would at the very least have some sympathy towards the populace. But as it turned out, he does not-- the lives of his former subjects might as well be worthless to him.
Doflamingo resorted to Birdcage - an overwhelmingly overpowered technique- in an attempt to completely massacre all the citizens of Dressrosa. His drive for doing so? So that all the dark secrets of Dressrosa would die with its citizens.
7 Crocodile: Dance Powder Incident
The Dance Powder is a substance used to deliver rain to a certain location at the expense of the areas surrounding said location. Crocodile used the Dance powder to cause a mass draught in the entirety of Alabasta, save for the royal capital. Afterward, he shifted all the blame to the royal family, almost causing a nationwide rebellion that demanded the head of the King. This entire scheme designed to overthrow the rule of King Cobra led to the death of many citizens, and the starvation of even more.
6 Doflamingo: Underground Influence
Doflamingo, throughout his evil career, acquired many nicknames. But the most prominent one is most definitely “Joker”. Joker is more than just a nickname, it’s an identity that signifies Doflamingo's standing as the world’s most infamous underground broker.
From the comfort of his throne in Dressrosa, Doflamingo pulled the strings (pun non-intended) to many major incidents and wars that occurred in the world.
5 Crocodile: Manipulated The Population Of Alabasta
Despite using the Dance powder that resulted in the deaths of many, to the public populace, Crocodile appeared as an honest Shichibukai who defended the kingdom from pirate invaders. This deep level of scheming inverted the truth, deceived the public, and almost caused an outbreak of civil war.
Has it not been for the intervention of the Straw Hats which led to the exposure of these scandals, Crocodile would’ve gained the rule of Alabasta through manipulating everything from the shadows.
4 Doflamingo: His Rule Over Dressrosa
The method Doflamingo used to gain control of Dressrosa was swifter and more effective than Crocodile, and that's factual. Crocodile’s plan was relatively slow-running, while Doflamingo finished everything in one fell swoop. After gaining control of Dressrosa, Doflamingo proceeded to set various inhumane plans in motion, such as the usage of ‘toy’ slaves.
To the innocent bystander, Dressrosa appeared as a colorful city of joy. Little did they know that beyond the colorful facade laid many dark and disturbing secrets.
3 Crocodile: No Regard For His Subordinates
This could as well be considered as a given. It’s pretty much common sense that most successful villains could not care less about their subordinates. As much as they are concerned, subordinates are just another form of pawns.
With that said though, for some reason or another; Crocodile shed off some of his evilness after being imprisoned in Impel Down. He did not necessarily become good, but he is not his old self either.
2 Doflamingo: His Goals
Most bad guys have an ultimate goal. Some just desire good old world domination, while others are a bit more creative in their approach-- doing bad for what they think is a greater good.
Doflamingo belongs to neither of the previous categories; what he wants is to see the world burn. He is just bad for the sake of being bad, no sugarcoating. This is arguably the vilest of villains.
1 Crocodile: Killed Everyone Who Made Fun Of Him
Crocodile stated to Robin that he murdered all those who made fun of him, and we are willing to take his word for it. Frankly, if that is true, then no one would actually be surprised. That is to be expected from the man who wouldn’t bat an eye to the idea of causing genocide. Crocodile is the kind of final boss that would behead a minion for delivering bad news.