The BEST episodes of One Piece season 16

Every episode of One Piece season 16, ranked from best to worst by thousands of votes from fans of the show. The best episodes of One Piece season 16!

The adventures of Monkey D. Luffy and his pirate crew in order to find the greatest treasure ever left by the legendary Pirate, Gold Roger. The famous mystery treasure named "One Piece".

Last Updated: 11/2/2024Network: Fuji TVStatus: Continuing
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Formation! The Pirate Alliance Luffy-Law!
star
10.29
63 votes

#1 - Formation! The Pirate Alliance Luffy-Law!

Season 16 - Episode 15 - Aired 5/5/2013

Luffy and Law agree on an alliance; the rest of the Straw Hats disapprove while Robin approves, even if she warns Luffy about a possible betrayal in a pirate alliance. Law switches Nami , Franky and Chopper's bodies again. Nami ends up in Sanji's body because Sanji is far away with Zoro and Brook . Law tells them that they can't go back once things start moving for example capturing Caesar Clown who has the Logia type Gasu Gasu no Mi. He warns them that he is highly dangerous therefore, they need Haki users to beat him. Luffy says that the Haki users there are him, Law, Zoro and Sanji. The marines are continuing their fight against Caesar's men. The three centaurs open the door and see a big glop of Slime that seeps out poison gas, most of them die and two survive so they run as it chases them. Caesar calls the pet slime monster Smiley and says that the Straw Hats and the G-5 marines are being used as test subjects for it.

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New World's Severe Earthquake ! Caesar's Nightmare Experiment
star
10.28
64 votes

#2 - New World's Severe Earthquake ! Caesar's Nightmare Experiment

Season 16 - Episode 22 - Aired 6/23/2013

The children tell Caesar that their heads hurt and he responded by telling them to go back to the biscuits room where there is more candy for them to eat. Mocha begins to regain her senses. Vergo and Monet are waiting for Caesar. Caesar arrives and tells Vergo to keep Smoker in check. Vergo tells him its too hard to keep Smoker in check. It is revealed that Caesar made a deal with Law in the past to give his heart to him and in exchange he will get to keep Monet's. Caesar squishes Law's heart after Law gives a retort. Caesar is about to squish Smoker's heart when Monet stops him telling him that the broadcast is ready. Caesar is about to give Smiley the big giant candy which is a weapon called Shinokuni. Zoro's group is still running away from Smiley. The dragon escapes from the sled and Caesar tells his subordinates to take off their suits and run to the lab. Smiley eats the giant candy and Chopper wonders what is happening while watching the broadcast

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Destruction Crisis - The Monster of Death Flies in
star
10.25
64 votes

#3 - Destruction Crisis - The Monster of Death Flies in

Season 16 - Episode 17 - Aired 5/19/2013

Luffy declares that he will capture Caesar. Law says he will deal with Monet while Chopper tries to find an antidote. Luffy and his group try to find the entrance to lab. Tashigi and Smoker attack Luffy, with Smoker gaining an advantage until Luffy uses Gear Second and tells Smoker to fight him later when he is at full strength. Back in the lab, the children start to wake up until Usopp puts them to sleep again. They then see pieces of Smiley falling onto the stolen warship. Franky, not being able to find an entrance, uses his Radical Beam to make an opening. The Marines try attacking it but discover that it emits poison gas when they touch it. One of them tries to burn it but it explodes when it catches on fire, destroying the ship. Back in the burning lands, Zoro, Sanji, Brook and The Samurai see Smiley shooting pieces of itself across the lake. Caesar then appears on top of the lab, explaining that Smiley was his experiment and that it is weak against water which is why it is shooting itself across the lake. After his speach, Luffy jumps up and grabs him.

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Protect the Children! Reach of Master's Evil Hand!
star
10.07
59 votes

#4 - Protect the Children! Reach of Master's Evil Hand!

Season 16 - Episode 21 - Aired 6/16/2013

As Luffy and Law remain captives in Caesar's lab along with the others who were captured, Caesar Clown goes to retrieve the children from the remaining Straw Hats. Meanwhile, Zoro's group are still running from Smiley which has finally transferred itself to the ice lands, causing all of its pieces to converge together

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Showing Off His Techniques! Zoro's Formidable One-Sword Style!
star
10.00
29 votes

#5 - Showing Off His Techniques! Zoro's Formidable One-Sword Style!

Season 16 - Episode 34 - Aired 9/22/2013

Mocha is still running away with the candy, and the kids are chasing her. Chopper, Nami, and Robin come to her and the children's aid. Then, G-5 and Sanji goes in their direction. At the Biscuit Room, Zoro and Tashigi battle Monet, with Monet almost breaking Tashigi's shoulder with her snow powers, but Zoro comes in and vertically splits Monet in half with a powerful One Sword Style technique. At the bottom of the C building, Luffy barely manages to hold onto a small ladge and begins to climb out, carrying an unconscious Momonosuke up the chute.

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Regretful Departure - Leaving Punk Hazard
star
10.00
29 votes

#6 - Regretful Departure - Leaving Punk Hazard

Season 16 - Episode 44 - Aired 12/1/2013

Luffy learns about what the Yonko are capable of. The Marines and the pirates part ways. Doflamingo is blackmailed.

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Caesar has Disappeared! The Pirate Alliance Sallies
star
10.00
29 votes

#7 - Caesar has Disappeared! The Pirate Alliance Sallies

Season 16 - Episode 47 - Aired 12/22/2013

A new foe appears. Caesar Clown gets kidnapped. The crew reunites with an old friend. Chopper goes berserk.

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Save Nami! Luffy's Snow Mountain Battle
star
9.97
60 votes

#8 - Save Nami! Luffy's Snow Mountain Battle

Season 16 - Episode 14 - Aired 4/28/2013

Chopper tells the others that Nami in Franky was kidnapped by the Yeti Cool Brothers. Franky in Chopper takes a rumble ball and becomes unconscious, Luffy and Franky go after the Yeti Cool Brothers to save Nami and defeat them. Meanwhile, Caesar notices Vegapunk's beam in Franky's body and craves for it, he calls his men so they go to the fire side gate and see a cave. Luffy and the Yeti Cool Brothers fight and by the end Law appears and defeats them. Law then propsoses an alliance to take down a Yonko to survive in the New World.

The Counterattack Begins! Luffy and Law's Great Escape
star
9.97
60 votes

#9 - The Counterattack Begins! Luffy and Law's Great Escape

Season 16 - Episode 24 - Aired 7/7/2013

As the Underworld Brokers watched the video feed of the captive Straw Hats and Marines, Eustass Kid and Killer decided to ignore it for more important matters, such as forming an alliance between the Kid pirates, On Air Pirates and the Hawkins Pirates. Law then decided to set his plan into motion and orders Franky to blow a fireball at a destroyed ship, creating enough smoke to block the cage from being seen from outside. Law then breaks free, explaining that he switched the sea prism stones with fakes during his stay on the island, and proceeds to free the others and restoring Tashigi and Smoker in their own bodies while securing their aid. Franky however had to leave them and protect the thousand Sunny. Meanwhile, Zoro and Nami's group are still running away from Shinokuni and they manage to join up while escaping. Luffy's group managed to enter the Lab with the aid of Law and they opened the gate, allowing the G-5 marines to get in before closing the gate, but the rest of the Straw Hats were still outside. Seeing their only chance of hope closing, Zoro and Kine'mon effortlessly cut the gate open, getting everyone inside safely.

Shock! Identity of Vergo, the Mysterious Man
star
9.97
59 votes

#10 - Shock! Identity of Vergo, the Mysterious Man

Season 16 - Episode 20 - Aired 6/9/2013

Vergo is still punishing Law and reveals that Vergo is the base commander of the G-5 Marine Base. On a unknown island inhabited by G-5 Marines that are extremely rude and take what they please. The citizens ask if they could look for their missing children. Revealing that the children in Ceaser Clown's laboratory were in fact kidnapped from this island. The Marines refused to help because they said Vergo looked over the missing reports and they all have died. Nami and Usopp who still are dealing with children who are going through severe withdrawals from not getting get any of their drug candy. Suddenly Caesar Clown appears and convinces the children to go back to the laboratory by bribing them with candy. Zorro's group are still dealing with Smiley and is furious that Kin'emon destroyed so much of the slime and decides to send huge slime attacks at them chasing them back to the laboratory. Luffy, Law, Robin, Franky, Tashigi, and Smoker in prison cell introduced to both Vergo and Monet. Meanwhile Caesar Clown's soldiers close all entrances to the laboratory leaving the G-5 Marines stranded outside to deal with Smiley. Vergo and Monet talk about what Caesar is planning but both are still quite not sure what he is planning. Smoker than calls out Vergo saying that his subordinates will die if he doesn't do anything. But, Vergo doesn't care less about what happens to them. Smoker pieces it together that Vergo is responsible for the cover-ups behind the missing children in the New World. Law then states that Vergo was never really loyal to the navy because he was originally a pirate all along working for the notorious underworld broker "Joker". Vergo then threatens both Tashigi and Smoker saying they will both die leaving his secret in tact. Luffy then asks Law "who is the Joker" and Law responds as someone that they all know who is a notorious pirate who works for the World Government. None other than, one of the Warlords Don Qiuxote Doflamingo.

Gang Obliteration! Legendary Hitmen Attack!
star
9.30
87 votes

#11 - Gang Obliteration! Legendary Hitmen Attack!

Season 16 - Episode 13 - Aired 4/21/2013

The Yeti Cool Brothers are making their way to the destroyed lab where the Straw Hats and the children are. Monet tells Caesar about Law having some relation to Luffy, which makes Caesar mistrust Law until Law reassures him. The Yeti Cool Brothers then attack the cave and shoot Brownbeard. They take Nami (Franky's body) with them. Luffy arrives and attempts to rescue Nami but fails. Law is challenged by two of Caesar's men as he leaves, and is forced to attack them.

Capture Master ! The Pirate Alliance's Operation Begins!
star
9.00
87 votes

#12 - Capture Master ! The Pirate Alliance's Operation Begins!

Season 16 - Episode 16 - Aired 5/12/2013

Zoro, Brook and Sanji are trying to find the samurai. Earlier they got knocked out by the Yeti Cool Brothers. Caesar's hazmat subordinates attack them but fail. They find the samurai's head frozen and unfroze him. They see Smiley far away. Smiley is a chemical experiment that caused the explosion in Punk Hazard. Law and Chopper are heading to the lab. Caesar drugged his test subjects to experiment on them. G-5 Marines attempt to break inside lab and then Luffy, Franky and Robin arrive out of nowhere surprising the Marines and Caesar's subordinates.

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Tension! Aokiji vs. Doflamingo
star
9.00
58 votes

#13 - Tension! Aokiji vs. Doflamingo

Season 16 - Episode 46 - Aired 12/15/2013

Kuzan saves Smoker. Usopp and Chopper prepare for an attack. Kin'emon is mad with Zoro. Momonosuke tries to get attention from the girls.

Shocking Conclusion! White Hunter vs. Vergo!
star
9.00
147 votes

#14 - Shocking Conclusion! White Hunter vs. Vergo!

Season 16 - Episode 37 - Aired 10/13/2013

Caesar tells Luffy to not underestimate Doflamingo, but Luffy keeps on attacking Caesar. Smoker continues his fight with Vergo. The Straw Hats, G-5 marines and the children run from the gas and continue to head towards building R-66. Caesar's subordinates find Usopp and attempt to attack him. Vergo beats Smoker but Smoker manages to retrieve Law's heart and gives it back to him. Law tells Doflamingo he is going to defeat Vergo. Doflamingo tells Law to not underestimate Vergo because of his haki. Vergo imbues haki onto his whole body and attempts to kill Law but Law cuts him in half along with the SAD and the island. Law tells Doflamingo that he and the supernovas are going to be the leaders of the new era.

Tashigi's Tears - G5's Suicidal Breakthrough Strategy
star
9.00
87 votes

#15 - Tashigi's Tears - G5's Suicidal Breakthrough Strategy

Season 16 - Episode 26 - Aired 7/21/2013

Caesar Clown, incensed with the humiliation that his prisoners escaped and are inside his lab, orders the passage between building A and B to be closed and Shinokuni to be let in to kill the intruders. Vergo, however decided to take care of them himself. Chopper, who was eavesdropping snuck out and tries to find his way to the children within the labyrinth that is the lab. Luffy, Smoker and Law were the first to cross the gate before the alarm sounded, indicating the gate is beginning to close. Tashigi instead heard the alarm and quickly ordered the G-5 marines to let the Straw Hats go and hurry towards the closing gate. When a wall was blown up in building A, Shinokuni flows in petrifying some marines while the rest hasten their escape. The Straw Hats and most of the marines got through the gate safety but a few stayed behind to help Tashigi across before the gate closes, losing themselves to the poison gas while their captain watches in horror. Caesar, angered that they survived, promised that no one will escape this lab alive.

The Aim is Building R! The Pirate Alliance's Great Assault!
star
9.00
87 votes

#16 - The Aim is Building R! The Pirate Alliance's Great Assault!

Season 16 - Episode 25 - Aired 7/14/2013

Though the Straw Hats and Brownbeard managed to escape into the lab, they left behind a gaping hole. But they soon realise that Shinokuni can now enter the lab. The G-5 Marines panickly seals the hole back up with various wooden and metal planks. They succeeded in sealing the hole as Shinokuni proceeds to spread throughout the island. Brook uses the power of his Devil Fruit to become a soul and survey the area outside of the lab, noting that 'it was like the land of the dead'. After regaining their senses, the G-5 marines then turn their guns and swords towards the Straw Hats preparing to arrest them. Nami notices Law and demands him to switch back her's and Sanji's body, to which Sanji secretly refuses. Law agrees to return them to their original bodies and uses Shambles to switch their hearts back. Nami notices that she was wearing a different coat and punches Sanji, accusing him for peeping at her body. Law then explains to everyone present that they only have two hours to escape, he then continues by saying the only passage that leads safely leads out of the island is called R-66 and is found in Room R. The marines were reluctant, but quickly changes their mind when Smoker repeated the order to them. Smoker then orders Tashigi to take command of the men and rescue the children as he goes to confront Vergo. Meanwhile, Caesar Clown is celebrating the deaths of his victims but notices that the cage has no solidifed bodies, which he needed to prove the power of Shinokuni. He also notices the absence of the G-5 Marines. Vergo states that Luffy and the others must have broken out of the cage and helped the G-5 soldiers escape. Before Luffy went to fight Caesar again, Zoro calls out to Luffy reminding him that this is just the beginning of the New World and he mustn't let his guard down again, and Luffy happily complies as he plows through the Satyr soldiers. Caesar Clown then receives the news that the Straw Hats and Marines have broken into the Lab, leaving him alarm

The Deadliest Weapon of Mass Destruction in History! Shinokuni!
star
9.00
87 votes

#17 - The Deadliest Weapon of Mass Destruction in History! Shinokuni!

Season 16 - Episode 23 - Aired 6/30/2013

After Smiley swallows the oversized candy, the candy coat dissolves revealing a special drug designed to convert the entire content of Smiley's body into a "perfect" weapon of destruction, Shinokuni. In the process, Smiley dies and in a sack of apples, an apple turns into a Devil Fruit. The beast's body transforms into poison gas spreading quickly throughout the island. It's lethal power was demostrated when Caesar's men were caught in it, being petrified before the eyes of the Brokers and the captive Straw Hats. Zoro's team are seen desperately trying to outrun the approaching gas while Nami and Usopp help Brownbeard after their vicious attack by Caesar. At the Lab, Ceasar reveals to his captives that they will get to experience the poison gas as well, moving them outside dangling in a cave. In spite of their situation, Law told Luffy that their original plan will still carry on and that its time to strike back at Caesa

The Samurai that Cuts the Fire! Kin'emon of Foxfire
star
9.00
87 votes

#18 - The Samurai that Cuts the Fire! Kin'emon of Foxfire

Season 16 - Episode 19 - Aired 6/2/2013

Law's heart is crushed by the mysterious man named Vergo who was sent along with Monet to watch over Caesar. Law gets knocked out by Vergo who had a bamboo stick with him imbued with Haki. Caesar tells his men to tie up the Straw Hats and G-5. Meanwhile Chopper is looking for a way to cure the children. Zoro's group are waiting for Sanji to rescue the samurai's torso. Sanji uses Haki to find the body and realizes it is in a shark's mouth. He manages to escape before the gas consumes him. The samurai then reveals himself as Kin'emon. He demonstrates his ability by cutting fire and by destroying the slime. He then attempts to find his son, Momonosuke. Zoro's group decides to aid him.

Directors: Tetsuya Endo
Big Battle ! Caesar Activates his True Ability!
star
9.00
87 votes

#19 - Big Battle ! Caesar Activates his True Ability!

Season 16 - Episode 18 - Aired 5/26/2013

Sanji, Kin'emon, Brook and Zoro see Smiley. Brook talks about a story about slime eating the clothes off of women making everyone act perverted except for Zoro, who points out that the slime is killing the fish in the lake, prompting Sanji to jump in to find Kin'emon's torso. Law tells Monet to take a walk with him while Chopper is left in the lab to find the antidote. Luffy faces off against Caesar who uses his Gas Robe attack until he discovers that Luffy is immune to poison. Caesar then uses his Gastanets and Smiley to injure Luffy who then grabs Caesar. Caesar then knocks Luffy out with an unknown ability. Robin, Franky, Tashigi and Smoker get knocked out as well. Law and Monet are walking down a hallway and encounter a mysterious figure who causes Law to break down in pain while the mysterious figure tells him that it's been a long time since they last met.

Chopper Enraged  Master's Tyrannical Experiments
star
9.00
58 votes

#20 - Chopper Enraged Master's Tyrannical Experiments

Season 16 - Episode 12 - Aired 4/14/2013

The children and the Straw Hats are in a cave with Brownbeard tied up talking about the Master. Zoro, Sanji and Brook go to look for Kin'emon, who had gone to look for his torso that Brook saw roll towards the ocean. The children start complaining and falling over from pain. Chopper, who had been testing them for any sicknesses, revealed that they had been given a highly addictive drug and were suffering from withdrawal symptoms. The children start attacking the Straw Hats, who can't fight back without injuring the children. Usopp eventually is able to put them to sleep with one of his new attacks. Back in the lab, Law gave Smoker's heart to Caesar, who had sent the Yeti Cool Brothers to deal with the Straw Hats. The Yeti Cool Brothers are then shown talking to each other while Zoro, Sanji and Brook were lying unconscious nearby.

A Duel of Swordplay! Brook vs. the Mysterious Samurai Torso
star
9.00
87 votes

#21 - A Duel of Swordplay! Brook vs. the Mysterious Samurai Torso

Season 16 - Episode 6 - Aired 2/10/2013

At the lake, Luffy's group have been attacked by Brownbeard and his centaur unit who's job was to intercept and eliminate any obvious intruders. In the lab, Chopper is fighting off the hazmat soldiers who were attempting to get into his, Nami and the children's way. Sanji and Franky continue to fight off their hazmat soldiers and discovers that they look like sheep. Meanwhile outside of the lab, Brook is seen fighting against the sword wielding torso and after trying to talk to it, gives up and runs away from it. With the G-5 marines and Smoker, the group blasts their way into the island and discovers a hidden river which they quickly enters, unaware that the river was being monitored. At the Lab, a hazmat soldier warns "Master" that the marines have almost reached the harbor. Master says he doesn't want to reveal himself to them, but his accomplice says he will greet them instead. The G-5 Marines finally reaches the shore and after Smoker rings the doorbell the marines decides to blow the door open. This was interrupted when the door suddenly opens and out comes the former supernova, Trafalgar Law. His sudden appearance makes all the marines except for Smoker and Tashigi scared. Tashigi claims he is now part of the Shichibukai after Law gave the World Government 100 pirate hearts in exchange for the position. Smoker then demands to know why Law is on the island at all since no one is permitted to set foot on the island, to which Law calmly replies with that Smoker and the marines are not allowed to enter here either.

Vice Admiral's Betrayal! Demon Bamboo Vergo
star
8.80
116 votes

#22 - Vice Admiral's Betrayal! Demon Bamboo Vergo

Season 16 - Episode 27 - Aired 7/28/2013

Though most of the G-5 Marines got through the gate safely, they were attacked by the small dragon who after a while flew away in fear. The marines cheered as their beloved Vice Admiral Vergo shows up but that turned to horror when he brutally assaulted them. Tashigi tries to defend them from him, but was viciously struck down. That action was enough to cause Sanji to come to the rescue, claiming he heard her tears falling. The Straw Hats (minus Sanji) and Brownbeard were still heading towards the end of the passage until the small dragon shows up and begins to attack them while Brownbeard suggests that he keeps running. Chopper manages to run into Mocha who was still hallucinating and manages to defeat the soldiers trying to apprehend her and give her a sedative to calm her down. Chopper then pleaded for her help to prevent the other children from eating the drugged candy. Meanwhile, Luffy and Smoker were racing towards building C where they believed Caesar and Vergo were located. They entered the private room where Caesar was angrily ordering Monet to release the poison gas on the marines only to turn around in shock of seeing Luffy fist buried in his stomach, who declared that he won't let Caesar escape again.

Incandescent Fierce Battle  Luffy vs. Caesar
star
8.70
87 votes

#23 - Incandescent Fierce Battle Luffy vs. Caesar

Season 16 - Episode 28 - Aired 8/11/2013

Luffy finally reaches Caesar's room and immediately punches the scientist, while Smoker leaves in order to find Vergo. Meanwhile, Sanji faces off Vergo while the passage between buildings A and B is closing and the previous one is opening, letting the poison gas enter. During the fight with Caesar, he tries to drain the oxygen in the area to kill Luffy, but fails once he enters Gear Second and use some attacks with Haki, making the scientist angry to the point of using some techniques as oxygen-made sword and fire bursts. Meanwhile, both Sanji and Vergo start running away from the gas. During this fight, Trafalgar Law makes his way to building D, where the SAD is made and Monet decides to enter the fight to protect Caesar, while he flies away, and reveals her snow abilities.

The Mastermind in the Shadows! Doflamingo Moves!
star
8.70
87 votes

#24 - The Mastermind in the Shadows! Doflamingo Moves!

Season 16 - Episode 29 - Aired 8/18/2013

Law walks into the SAD Room. The door closes on Section A and it turns out Sanji is still alive. Tashigi tells the marines that the Vergo who attacked them is fake so that they could proceed with the mission. Vergo speaks with Doflamingo about Law while Baby 5 attacks him. Doflamingo stops her from attacking him. Monet shows off her powers to Luffy. Chopper keeps the drugged children busy so that Mocha can run off to stop the drug. The rest of the straw hats are busy escaping section B. Kin'emon and Brook cut down the dragon. A little girl tells the two hazmat suit guys that Momonosuke entered the secret room and turned into a dr

G-5's Annihilation! Doflamingo's Assault!
star
8.66
59 votes

#25 - G-5's Annihilation! Doflamingo's Assault!

Season 16 - Episode 45 - Aired 12/8/2013

The Straw Hat Pirates, Kin'emon, Momonosuke, and Law are on course to Dressrosa. Doflamingo makes his move. A mysterious man appears on Punk Hazard.