The One Piece manga debuted in 1997, and it has since gone on to become one of the most popular series in history, and the anime has managed to achieve global popularity as well. The Attack on Titan manga debuted in 2009, and although it had a significant fanbase, the series did not get real global attention until the anime was released in 2013.
Attack on Titan is set in a world where humanity is threatened by giant, man-eating humanoid monsters called Titans, and for the most part, they cannot be killed. However, they can be taken down if a specific section of their nape is sliced or destroyed. One Piece is filled with characters who are strong enough to take down a Titan, but there are also characters who would undoubtedly be eaten despite their abilities.
10 COULD KILL A TITAN: Law Can Use The Op-Op Fruit To Remove A Titan's Nape
Thanks to the Op-Op Fruit, Law is one of the best Paramecia Devil Fruit users in the series, and he can use it to take down pretty much every Titan that appears before him. The Fruit allows Law to create a spherical space, and he can control the placement and orientation of any object within that space.
With this ability, Law can simply rearrange a Titan's body to the point where it can longer move and pose a threat, or he can just use his power to remove the Titan's nape from its body. Once the nape is gone, the rest of the Titan should stop moving.
9 WOULD BE EATEN: Buggy Is Too Weak & His Devil Fruit Would Be Ineffective
The Chop-Chop Fruit may not be the worst Paramecia Devil Fruit, but against a Titan, it would offer someone like Buggy very little protection. The Fruit allows its user to split their body into pieces, and they can control these pieces individually.
This power makes Buggy immune to slashing and piercing attacks, but he can still be hurt by other forms of damage. Buggy doesn't possess the physical strength to take down a Titan, and if he gets captured by one, his Devil Fruit won't help him. This is because even if he stops his head from being eaten by separating it from his body, his torso will still get eaten, and that will kill him instantly.
8 COULD KILL A TITAN: Kaido's Strength & Durability Would Be Too Much For Any Titan
Kaido has fought some of the strongest characters in the series, and he has left most of those battles without sustaining a single injury, so a few Titans will mean nothing to him. He may be human, but Kaido is considered to be the strongest creature in the world because of his superhuman strength and durability.
He is so strong that he will be able to smash through a Titan's body with his massive war club with ease, and if a Titan ever does grab a hold of him, its teeth will likely break when it tries to eat him. Kaido can also just use his Mythical Zoan Devil Fruit to transform into a colossal azure dragon who can obliterate Titans with elemental attacks.
7 WOULD BE EATEN: Sanji's Kicks Cannot Stop A Titan
Sanji might be one of the Straw Hats' strongest and most durable members, but all of his strength comes from his powerful kicks, and no human has ever taken down a Titan by kicking it. Granted, Sanji can enhance his kicks with fire and Armament Haki, but unless the attack completely destroys the nape, the Titan will continue to live.
If a Titan grabs hold of Sanji, it will be game over, even with his Armament Haki. That's because Sanji cannot apply it to his entire body, which means that he would still be ripped apart.
6 COULD KILL A TITAN: Daz Bonez's Devil Fruit Turns His Entire Body Into A Weapon
The people of Paradis Island have been fighting Titans for years with their 3D maneuver gear, which comes with specialized swords. If those little blades are capable of killing Titans, then Daz Bonez will be able to cut through them as well.
Bonez was one of the strongest characters in the Alabasta Arc, and he possesses the Dice-Dice Fruit, which allows him to create strong, sharp blades from any part of his body. He can use those sharp blades to cut through a Titan, and if one of the monsters grabs him, he'll be able to slice through its fingers with ease.
5 WOULD BE EATEN: Nami's Weather Manipulation Wouldn't Stop A Titan
Nami may not have Haki or a Devil Fruit power, but she can still handle herself in a fight thanks to her signature Clima-Tact, which is an adjustable bo-staff that allows her to manipulate the weather of her surroundings.
The Clima-Tact has been upgraded several times, and she can now use it to produce powerful lightning strikes. A lightning strike might be able to take a Titan down, but only if it hits the nape directly, which will be incredibly hard to do if the Titan is moving. If she uses this technique and misses, there will be no other way for her to keep a Titan from eating her.
4 COULD KILL A TITAN: Doflamingo Can Tear A Titan Apart With His Strings
Doflamingo has done some pretty heinous things, but no one can deny the fact that the former Warlord of the Sea was a powerful individual. He ate the String-String Fruit, and it allows him to create and manipulate strings. He also managed to awaken his Devil Fruit, which is why he can now transform non-living things into string and control them.
String may not seem like a good weapon to use on a Titan, but Doflamingo's string is capable of cutting through, skin, muscle, and bone, and he used it to sever the leg of Oars Jr. at Marineford. Oars is basically One Piece's version of the Colossal Titan, so if Doflamingo can cut through him, he'll be able to tear a Titan to shreds.
3 WOULD BE EATEN: Garp Possesses Incredible Strength, But He's Still An Ordinary Human
Garp is a legend and a hero, and if he actually wanted the rank of Admiral or Fleet Admiral, he would be given it immediately. He may be old now, but Garp still possesses immense physical strength, endurance, and pain tolerance, but none of that would stop a Titan from ripping him apart.
Garp might be able to take down giants, but those giants can actually feel pain and get knocked out. A Titan won't stop attacking until it's dead, and seeing how Garp hasn't been shown to use Armament Haki yet, it's fair to assume that he won't last long in a Titan's grasp.
2 COULD KILL A TITAN: Zoro Would Cut Through A Titan Like It Was Butter
Zoro is one of the best swordsmen in One Piece, which is why all of his fights have been entertaining. Seeing how he is capable of cutting through solid rock, slicing through a Titan's body will be like cutting through butter.
Zoro has high endurance, and he can use Armament Haki to increase the strength and cutting power of his swords even further. He can unleash a multitude of devastating attacks, and it doesn't matter if he's using one sword or three. If he does use three swords, though, there's a good chance he'll be able to take down multiple Titans in a single battle.
1 WOULD BE EATEN: Usopp's Marksmanship Wouldn't Be Able To Take Down A Titan
Usopp is brave when it matters, but for the most part, the Straw Hat marksman is a coward who would run for his life as soon as he saw a Titan coming toward him. In terms of physicality, Usopp is arguably one of the weakest characters in the series, but he does possess Observation Haki, and his aim with a slingshot is superb.
If he used his slingshot to shoot a small explosive projectile at a Titan, he may be able to temporarily blind it, but that would be it. Titans cannot be killed by normal guns and bullets, so unless Usopp has some sort of armor-piercing slingshot ammo, he'll never be able to stop a Titan from killing him.