Caesar Clown

Caesar Clown is a anime/manga character in the One Piece franchise
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Caesar Clown is a mad scientist with a bounty of 300,000,000 beri and a former colleague of the famous Dr. Vegapunk. Caesar is famous for his creation of weapons of mass murder.


Caesar Clown was once the assistant to the famous Dr. Vegapunk on Punk Hazard Island in his research, but he was jealous of Vegapunk. He sabotaged two of the three labs to cause an accident and fill the island with a deadly gas. This caused the Marines to abandon the island and leave the prisoners behind. He stayed to continue his research on the island and used the prisoners, fooling them into thinking he was saving them.

After several years, he later abducted children to experiment on in his research on giantifaction. He told the kids they were sick, but this was just to keep them in line. The new member of the Seven Warlords, Trafalgar Law, came to the island, but Caesar didn't trust Law. He made him a deal to use his powers to give his heart to him and he would take the heart of Monet, Caesar's assistant. Caesar actually handed Law's heart onto Donquixote Doflamingo's crew.


One Piece Vol. 67 (Apr 2012)
One Piece Vol. 67 (Apr 2012)

Caesar Clown is an antagonist in the One Piece series that was created by Eiichiro Oda. The series first began serialization in Shueisha's Weekly Shōnen Jump on August 4, 1997. He would later appear in the Punk Hazard Island Arc that began in Volume 66.

His first appearance was in One Piece Volume 67 CH. 658 "Biscuits Room", and his first anime appearance was in One Piece - Episode 581 "The Straw Hats Stunned! Enter: A Samurai's Horrifying Severed Head!". His character in the Japanese series is voiced by Ryūsei Nakao, and the U.S. dub produced by FUNimation has yet to announce a voice actress.

Major Story Arcs

Punk Hazard Island Arc

Caesar's research into his poisons was thrown into chaos when Punk Hazard Island was invaded by pirates. Some were captured but escaped to free the children in Biscuit's room. Monet soon returned to report that Vegapunk's dragon had been killed by some of the pirates, and she identified them as the Straw Hats. Members of the Marines' G-5 unit under the command of Vice-Admiral Smoker were also seen heading after the Straw Hat Pirates. Caesar ordered the Yeti Cool Brothers to kill the Straw Hats, Brownbeard, and retrieve the children, but they never returned. Caesar released his monster weapon Smiley, they tried to confront Monkey D. Luffy and the Marines. Luffy very nearly defeated Caesar until he used his powers to cause everyone to pass out due to lack of oxygen and had them all locked up. He tracked down the children and defeated Nami and Usopp as they tried to stop them. He took the kids back, since they were in withdrawal of the drug he had been giving them; but Mocha, one of the kids, resisted.

Upon returning to the lab, Caesar found that Vergo had arrived and captured Trafalgar Law for trying to betray them. Caesar unleashed his deadly Shininokuno poison onto the island for the weapons workers across the New World to watch. He put Law, Luffy, and Smoker out to die, but they escaped and got back into the labs. Luffy later found Caesar and was posed to defeated him with little effort until he was rescued by Monet's powers and allowed to escape.

Powers & Abilities

Gas-Gas Fruit

Caesar is the user of the Logia-type Devil Fruit called the Gas-Gas Fruit. This has changed his body into the form of a vaporous gas. By transforming into gas, it becomes nearly impossible to injure his body unless the use of Haki is involved. He is also able to control all gases in his immediate area as he was able to knock out Luffy by taking the oxygen away the oxygen around him. Unique to only a few characters in the manga Caeser has a vehicle that uses his element as a source of energy.

Other Media

Voiced by
Name Movies TV Shows
Ryūsei Nakao
General Information Edit
Name: Caesar Clown
Name: シーザークラウン
Romanji: Shīzā Kuraun
Gender: Male
1st manga book: One Piece #67
1st anime episode: One Piece #581
1st anime movie:
Aliases Ceasar Clown
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