Monkey D. Luffy is the main protagonist of One Piece. As the hero, he has been constantly involved in high-octane fights. Most of the time, Luffy has successfully beaten his opponents without relying on the help of others.

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However, there have been instances where the protagonist has struggled to get the better of his enemies. So, Luffy had to seek the help of his friends and even his rivals to beat certain characters. Needless to say, Luffy's journey would have come to an end if he hadn't received the necessary support.

7 Arlong

Luffy's Foot Had To Be Freed

Arlong served as the main villain of the Arlong Park arc. He was a powerful Fish-Man who was fueled by his racist ideals. Arlong despised human beings, and he did not hesitate to kill them. As a Fish-Man, Arlong was several times stronger than a human being.

Luffy struggled quite a bit against Arlong, but most of his problems were his own doing. He got carried away, and one of his attacks caused his feet to be stuck in the ground, leaving him at Arlong's mercy. In order to save him, Sanji had to go underwater and fight Kuroobi. If it weren't for him, Arlong would have beaten Luffy easily.

6 Charlotte Cracker

Nami Provided Support In The Fight

Charlotte Cracker was among the many sons of Big Mom. Due to his impressive strength, he was named among the Sweet Commanders. Cracker ate the Bisu Bisu no Mi, a Paramecia-type Devil Fruit that enabled him to create and manipulate biscuits at will.

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Luffy and Cracker traded blows in the Whole Cake Island arc. Luffy utilized a different version of Gear 4th, but Cracker was hardly bothered by it. The fight would have continued forever if Nami had not helped Luffy by softening Cracker's biscuits.

5 Gecko Moria

All The Straw Hats Had To Fight Gecko Moria

Gecko Moria was the main antagonist of the Thriller Bark arc. He was a Shichibukai with a bounty of 320,000,000 berries. In his heyday, Moria was rivals with Kaido. The two clashed against each other many years prior to the story. Moria lost the fight and the majority of his crew, which forced him to make zombies.

Moria fought Luffy in the Thriller Bark arc. The Shichibukai took control of Oars' massive body, which made it almost impossible to damage him. So Luffy had to get help from all of his crew members. Together, they managed to weaken Moria enough, which enabled Luffy to finish him off.

4 Crocodile

Nearly Killed Luffy Twice

Crocodile is currently one of the leaders of the Cross Guild. Before starting the organization, Crocodile used to be a Shichibukai who offered his services to the World Government in exchange for certain privileges. Crocodile possesses the Suna Suna no Mi, a Logia-type Devil Fruit that allows him to control sand at will.

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Crocodile and Luffy clashed three times in total. Out of the three attempts, Luffy lost twice, and he was left in a terrible condition. Luckily, he was helped by Nico Robin. After he recovered completely, Luffy fought Crocodile for the second time, and he suffered a loss. However, Luffy refused to give up, and he was successful in his third attempt.

3 Donquixote Doflamingo

Luffy Was Helped By Sabo And Others

Many years prior to the current timeline, Doflamingo and his crew traveled to Dressrosa and removed Riku from power. They ruled the country until the Straw Hat Pirates made their way to Dressrosa. With the help of the talented fighters in the Colosseum, they managed to overwhelm most of the Donquixote Pirates.

The biggest highlight of the arc was the fight between Doflamingo and Luffy. The latter debuted his Gear 4th in the fight, and it helped him to overwhelm Doflamingo. However, Luffy's lack of control and stamina caused Gear 4th to run out, leaving him completely vulnerable. Thankfully, Sabo and other fighters from the Colosseum were around, and they protected the hero until he had fully recovered. Once Luffy regained his strength, he wasted no time in taking down Doflamingo.

2 Magellan

Luffy Had To Be Rescued By Ivankov and Was Later Helped By Mr. 2 and Mr. 3

Magellan was the chief warden of Impel Down. He has absolute authority over every single person in the facility. Magellan possesses the Doku Doku no Mi, a Paramecia-type Devil Fruit, which allows him to create and control poison at will.

Luffy's first meeting with Magellan ended in a complete disaster, with the young pirate being left at death's door. It took an extensive procedure from Ivankov to restore Luffy to full health. When Luffy fought Magellan again, the former had help from Mr. 3, whose candle powers helped the hero land attacks on Magellan without being poisoned. It is safe to say that Luffy wouldn't have escaped from Impel Down alive.

1 Kaido

Yamato And Other Characters Weakened The Yonko

Kaido was the captain of the Beasts Pirates and one of the fiercest individuals in the New World. He was obsessed with the idea of war, and he believed that people could only be equal during turmoil. Kaido had monstrous strength, with which he attained the reputation of being the strongest creature in the world.

He possessed the Uo Uo no Mi, Model: Seiryu, a Mythical Zoan-type Devil Fruit that allowed him to turn into an Azure Dragon. Kaido also had access to all three types of Haki, making it almost impossible to overwhelm him. Luffy needed help from Yamato, Kid, Law, Zoro, and Killer to defeat Kaido.

One Piece (1999)

Action

Adventure

Comedy

Fantasy

Release Date

October 20, 1999

Studio

Toei Animation

Creator

Eiichiro Oda

Streaming Service(s)

Crunchyroll , Netflix , Hulu

See at Hulu