One Piece: 8 Superheroes Luffy Can Defeat (And He Can’t)

Monkey D. Luffy has grown from an ambitious rookie pirate into one of the most powerful protagonists in shonen anime. Through mastering all three forms of Haki and awakening the incredible power of Gear 5, he has reached a level where only the world’s strongest fighters can challenge him. His remarkable growth has made him a serious contender against heroes from many other anime universes.

This list compares Luffy with 16 iconic heroes to see how he measures up in hypothetical battles. Some possess abilities that Luffy could realistically overcome, while others have powers that would likely prove too much even for the future Pirate King. Each matchup is ranked based on their feats, abilities, and combat potential.

8 Heroes Luffy Can Beat

1. Spider-Man

Spider-Man is one of Marvel’s most popular heroes because of his incredible agility, quick thinking, and ability to adapt during combat. Thanks to the radioactive spider bite that transformed him, Peter Parker possesses superhuman strength, enhanced reflexes, remarkable durability, and the famous Spider Sense, which warns him of incoming danger before it happens. Against most opponents, these abilities make him extremely difficult to hit. However, Monkey D. Luffy has reached a level where many of Spider-Man’s biggest strengths become less effective than they first appear.

Observation Haki allows Luffy to sense attacks before they happen, giving him a form of combat awareness that can rival Spider-Man’s Spider Sense. Luffy has also fought opponents who move at incredible speeds and possess unpredictable fighting styles, forcing him to sharpen his reactions through countless life-or-death battles. While Spider-Man is physically powerful by Marvel’s street-level standards, he has rarely demonstrated the level of destructive force needed to compete with characters capable of splitting islands or defeating Yonko-level opponents.

Gear 5 also gives Luffy an unpredictable fighting style that ignores conventional logic. His awakened Devil Fruit allows him to manipulate his surroundings, stretch in impossible ways, and attack from unexpected angles. Even Spider-Man’s intelligence and experience would struggle against an opponent whose attacks constantly change shape and direction during battle.

Peter would certainly avoid many early attacks, and his webbing could slow Luffy for brief moments. However, Luffy has repeatedly broken free from powerful restraints and continued fighting through overwhelming damage. Once he closes the distance, the difference in raw strength, Haki, and endurance becomes difficult for Spider-Man to overcome.

2. Nightwing

Dick Grayson is widely regarded as one of DC’s greatest martial artists and one of the smartest tactical fighters in comics. After years of training under Batman, Nightwing developed incredible acrobatic skills, expert weapon mastery, and outstanding hand-to-hand combat ability. His speed, precision, and athleticism allow him to defeat opponents much stronger than ordinary humans. Even without superpowers, he consistently battles dangerous criminals and metahumans through preparation and skill alone.

Despite those accomplishments, Nightwing faces a challenge that cannot be solved with technique alone. Monkey D. Luffy operates on an entirely different level of physical power. His body can absorb tremendous punishment while continuing to fight at full strength, making him far more durable than almost any street-level superhero.

Nightwing’s agility would allow him to avoid several attacks during the early stages of the fight. His experience against unpredictable opponents would also help him analyze Luffy’s movements. However, Luffy has fought countless opponents who rely on speed and agility, including assassins, martial artists, and Devil Fruit users with unique abilities. Observation Haki would further reduce Nightwing’s chances of successfully landing meaningful attacks.

Gear 5 makes the matchup even more difficult. Luffy’s cartoon-like movements, elastic body, and ability to reshape the battlefield create situations that even Batman’s former protégé would struggle to anticipate. Every attack carries tremendous force, and one direct hit could end the battle immediately.

Nightwing deserves recognition as one of DC’s finest non-powered heroes, but this matchup highlights the enormous difference between peak human combatants and top-tier shonen protagonists. Skill alone cannot overcome such a significant gap in strength, durability, and combat ability, making Luffy the clear favorite.

3. Beast Boy

Beast Boy brings one of the most versatile power sets in DC Comics. His ability to transform into virtually any animal gives him countless options during battle, allowing him to switch between powerful predators, flying creatures, sea animals, and even prehistoric beasts within seconds. That flexibility often makes him unpredictable because every transformation presents a different challenge for his opponents.

Even so, Monkey D. Luffy has spent most of his journey fighting enemies with abilities that closely resemble Beast Boy’s transformations. Throughout One Piece, Luffy has battled enormous sea creatures, giant beasts, dinosaur-based Devil Fruit users, mythical Zoan users, and opponents who combine brute strength with animal abilities. These encounters have forced him to adapt to constantly changing fighting styles, making Beast Boy’s greatest advantage less surprising than it would be against most heroes.

Another important factor is raw physical strength. Beast Boy’s transformations increase his size and power depending on the animal he chooses, but they rarely reach the level required to overpower someone capable of matching Yonko-level opponents. 

Gear 5 also gives Luffy a major edge in creativity. Instead of relying on strength, he can stretch, bounce, and reshape both his body and the environment to create attacks that ignore conventional combat rules. That unpredictability makes it difficult for Beast Boy to settle into any single transformation for long.

Beast Boy’s adaptability ensures that this fight would remain entertaining, with constant changes in strategy and form. However, Luffy’s experience against powerful animal-based enemies, combined with superior Haki, endurance, and overwhelming offensive power, gives him the tools to eventually overcome every transformation Beast Boy can offer.

4. Captain America

Captain America has earned his reputation as one of Marvel’s greatest heroes through courage, leadership, and unmatched combat skill. Enhanced by the Super Soldier Serum, Steve Rogers possesses peak human strength, speed, endurance, and reflexes that allow him to compete against opponents far stronger than ordinary soldiers. His vibranium shield is one of the most recognizable weapons in comics, capable of blocking devastating attacks while also serving as an offensive tool through precise throws and ricochets. 

Against Monkey D. Luffy, however, Steve faces an opponent whose physical abilities extend well beyond enhanced human limits. Luffy’s mastery of Armament, Observation, and Conqueror’s Haki allows him to fight some of the strongest characters in One Piece. His attacks carry enough force to damage opponents with extraordinary durability, while Gear 5 dramatically increases both his power and creativity during battle.

Captain America’s greatest advantage would be his tactical intelligence. He excels at identifying weaknesses and adjusting his strategy in the middle of a fight. That experience could help him avoid several dangerous attacks while searching for an opportunity to counter. Unfortunately, finding such an opening against Luffy is far easier said than done. Observation Haki allows Luffy to anticipate incoming attacks, reducing the effectiveness of Steve’s carefully planned offense.

Even if Captain America’s shield blocks several punches, Luffy has shown the ability to launch relentless combinations from multiple angles while stretching his body across large distances. The sheer volume and unpredictability of those attacks would eventually overwhelm Steve’s defenses.

Captain America would never back down and would likely push Luffy to take the fight seriously through determination alone. Nevertheless, the gap in strength, durability, Haki, and destructive power is too large. 

5. Black Widow

Black Widow has built her reputation through intelligence, precision, and years of elite espionage training rather than overwhelming superhuman power. As one of Marvel’s most accomplished spies, Natasha Romanoff excels at infiltration, deception, and close-quarters combat. She has defeated dangerous opponents using martial arts, tactical planning, and specialized equipment, often succeeding against enemies who are physically stronger than she is. 

Despite her impressive resume, Monkey D. Luffy presents a challenge unlike anything Black Widow typically faces. Luffy’s mastery of all three forms of Haki gives him heightened awareness, devastating offensive power, and exceptional durability. Even before unlocking Gear 5, Luffy regularly fought enemies capable of destroying cities and surviving attacks that would overwhelm most superheroes.

Black Widow’s best chance would come before the fight begins. She is an expert strategist who often wins through preparation rather than direct confrontation. If given time to gather intelligence, she could develop creative ways to slow Luffy or create temporary openings. However, once the battle becomes a straightforward fight, her lack of superhuman strength becomes a major disadvantage.

Luffy’s rubber body naturally reduces the effectiveness of many conventional attacks, while Armament Haki greatly increases his resistance against powerful strikes. His speed also allows him to close long distances almost instantly, preventing Black Widow from controlling the pace of the battle. Gear 5 adds another layer of unpredictability by allowing Luffy to fight in ways that ignore conventional physics.

Natasha deserves recognition as one of Marvel’s greatest human heroes because of her intelligence and experience. However, this matchup comes down to overwhelming physical differences. 

6. Hawkeye

Hawkeye has repeatedly proven that extraordinary skill can stand alongside superhuman abilities. Clint Barton may not possess enhanced strength or magical powers, but his unmatched accuracy, quick decision-making, and vast collection of trick arrows allow him to contribute in battles involving some of Marvel’s strongest heroes. 

Against Monkey D. Luffy, Clint’s greatest strength would be maintaining distance. His exceptional aim allows him to strike targets from incredible ranges, and his versatility gives him several ways to slow an advancing opponent. Explosive arrows or restraint-based weapons could briefly interrupt Luffy’s attacks and force him to adapt. Hawkeye is also a capable martial artist, meaning he would not be completely helpless if the fight became more personal.

Unfortunately for Clint, keeping Luffy at a distance is far easier in theory than in practice. Luffy’s stretching abilities allow him to attack opponents from unexpected angles over remarkable distances, making traditional ranged advantages much less effective. Observation Haki also improves his reactions, helping him anticipate incoming attacks before they connect.

Hawkeye remains an exceptionally trained human, while Luffy has endured attacks from some of the strongest pirates in the One Piece world. Even if several arrows land successfully, Luffy has repeatedly continued fighting after suffering injuries far more severe than what Hawkeye can normally inflict.

Gear 5 creates even greater problems by making Luffy’s movements almost impossible to predict. His ability to reshape his body and launch bizarre attacks would leave Hawkeye with very little time to prepare accurate counterattacks.

Clint Barton deserves enormous respect for standing beside gods and super soldiers despite lacking powers of his own. However, courage and precision cannot fully compensate for the enormous gap in strength, endurance, and combat power. Luffy’s superior physical abilities make him the overwhelming favorite in this matchup.

7. Green Arrow

Green Arrow is far more than an expert archer. Oliver Queen combines world-class marksmanship with years of combat experience, tactical intelligence, and leadership gained through countless missions with the Justice League. His arsenal includes explosive arrows, electric arrows, grappling arrows, smoke arrows, and numerous specialized weapons designed to handle different threats. 

Monkey D. Luffy, however, has consistently defeated opponents who possess far greater physical abilities than Green Arrow. His mastery of Armament Haki significantly enhances both his offensive and defensive capabilities, while Observation Haki allows him to detect attacks before they arrive. Those abilities greatly reduce the effectiveness of surprise attacks, one of Green Arrow’s most valuable advantages during combat.

Oliver would likely begin the battle by keeping his distance and using a variety of trick arrows to test Luffy’s weaknesses. Smoke screens, explosive attacks, and restraining projectiles could create temporary opportunities, especially considering Oliver’s exceptional accuracy. Nevertheless, Luffy has overcome countless opponents with unusual abilities and has repeatedly adapted to unpredictable attacks throughout his pirate journey.

Once Luffy closes the gap, the fight changes dramatically. His stretching abilities allow him to attack from long distances without sacrificing power, removing one of Green Arrow’s biggest tactical advantages. Gear 5 further complicates matters by making Luffy’s attacks increasingly creative and difficult to anticipate.

Green Arrow’s determination and experience ensure that he would never give up easily. He has survived impossible situations throughout his career by relying on intelligence rather than brute force. Still, intelligence alone cannot overcome the massive difference in durability, speed, and striking power between these two characters.

Oliver Queen remains one of DC’s greatest non-powered heroes, but Luffy’s overwhelming physical superiority and advanced Haki give the future Pirate King a convincing path to victory in a direct confrontation.

8. Iron Fist

Iron Fist stands apart from many street-level Marvel heroes because of the mystical power he channels through his martial arts. After mastering the ancient teachings of K’un Lun, Danny Rand gained the ability to focus his chi into the legendary Iron Fist, delivering devastating strikes capable of damaging powerful opponents and even destroying heavily reinforced structures. 

Among all the heroes Luffy could realistically defeat, Iron Fist arguably presents one of the most interesting matchups. Both fighters rely on unique internal power systems that dramatically increase their combat effectiveness. Danny channels spiritual energy through chi, while Luffy combines his Devil Fruit abilities with advanced Haki to enhance every aspect of his fighting style. 

Iron Fist’s years of martial arts training allow him to identify weaknesses, control distance, and maximize every strike. A direct hit from the Iron Fist would certainly hurt Luffy, especially if delivered with perfect timing. However, Luffy has survived attacks from opponents whose destructive power greatly exceeds what Danny has consistently demonstrated throughout Marvel Comics.

The awakening of Gear 5 widens the gap further. Luffy’s unpredictable movements, incredible resilience, and ability to reshape both his body and surroundings create situations that traditional martial arts are not designed to counter. Combined with all three forms of Haki, Luffy possesses multiple layers of offense and defense that continue to evolve throughout battle.

7 Heroes Luffy Can’t Beat

1. Aquaman

Aquaman is often underestimated because many fans associate him primarily with his ability to communicate with sea life. In reality, Arthur Curry is one of DC’s strongest heroes and has repeatedly proven capable of standing alongside Superman, Wonder Woman, and other members of the Justice League. His Atlantean physiology grants him immense strength, incredible durability, enhanced speed underwater, and the ability to survive the crushing pressure of the deepest parts of the ocean.

Against Monkey D. Luffy, Aquaman benefits from one of the biggest natural advantages on this list. Luffy’s Devil Fruit powers come with a well-known weakness to seawater. While Gear 5 and advanced Haki make him one of the strongest fighters in One Piece, none of those abilities remove the fact that he loses his strength once submerged. 

Even on land, Arthur remains a difficult opponent. His strength and durability allow him to exchange blows with powerful metahumans, while his Trident of Atlan gives him an additional edge through magical properties and exceptional reach. Luffy would certainly land powerful attacks and could pressure Aquaman with his speed and unpredictable fighting style, especially using Gear 5’s creative abilities.

The deciding factor, however, is the environment. If the battle takes place anywhere near a large body of water, Aquaman has numerous ways to exploit Luffy’s greatest weakness. Even if Luffy dominates portions of the fight on land, a single successful attempt to drag him into the sea could completely change the outcome.

Luffy has overcome impossible odds throughout One Piece, but this matchup is heavily influenced by a weakness that cannot simply be ignored. Because Aquaman possesses both tremendous physical power and the perfect environmental advantage, he earns a well-deserved victory in this crossover battle.

2. Thor

Thor ranks among Marvel’s most powerful heroes, combining the strength of an Asgardian warrior with the abilities of the God of Thunder. Over countless battles, he has defeated cosmic threats, fought world-ending villains, and stood against beings capable of destroying entire planets. His enchanted hammer Mjolnir grants him control over lightning, allows him to fly, and dramatically increases his already overwhelming combat abilities.

Monkey D. Luffy has reached incredible heights after awakening Gear 5 and mastering all three forms of Haki. He can trade blows with Yonko-level opponents, display extraordinary durability, and fight with unmatched creativity. His rubber body even provides natural resistance to many forms of blunt force, giving him an advantage against conventional physical attacks. Those qualities would allow him to survive longer than many heroes facing Thor.

Thor possesses advantages that extend well beyond raw strength. His control over lightning and weather introduces attacks that are far more destructive than standard punches or weapon strikes. While Luffy has shown resistance to electricity in One Piece, Thor’s mystical powers operate on a completely different scale than ordinary lightning-based attacks.

Thor’s immense combat experience further strengthens his chances. Having fought gods, monsters, and cosmic entities for centuries, he has encountered a wide variety of fighting styles and possesses the patience to adapt during prolonged battles.

3. Hulk

The Hulk represents one of Marvel’s purest examples of unlimited physical power. Whenever Bruce Banner transforms, he becomes an unstoppable force whose strength increases alongside his anger. Unlike many superheroes whose abilities remain relatively stable, Hulk continues growing stronger the longer a fight lasts. This unique characteristic has allowed him to battle cosmic beings, overpower legendary heroes, and survive attacks that would defeat almost anyone else in the Marvel Universe.

Monkey D. Luffy has faced enormous opponents throughout One Piece, including giants, mythical creatures, and some of the world’s strongest pirates. His mastery of advanced Haki and the awakening of Gear 5 have transformed him into an elite fighter capable of defeating enemies once considered unbeatable. 

The early stages of this battle would likely favor Luffy more than many people expect. Gear 5 provides incredible mobility, unpredictable attacks, and enough striking power to stagger extremely durable opponents. Luffy’s speed also surpasses Hulk’s in many situations, allowing him to land multiple attacks before his opponent can fully respond. 

The problem arises as the battle continues. Hulk becomes stronger with every passing moment, while Luffy’s strongest forms consume significant stamina during extended fights. As Hulk’s rage increases, so does his durability and destructive capability. Eventually, the difference in sustained power becomes increasingly difficult for Luffy to overcome.

4. Superman

Superman has long served as the standard by which many fictional heroes are measured. As the last son of Krypton, Clark Kent possesses extraordinary strength, incredible speed, flight, heat vision, freeze breath, enhanced senses, and remarkable durability. Across decades of DC Comics, he has prevented planetary disasters, survived catastrophic attacks, and defeated enemies capable of threatening the entire universe.

Monkey D. Luffy has experienced one of the greatest power jumps in modern shonen. Through relentless training and countless battles, he mastered advanced Haki and awakened Gear 5, unlocking abilities that allow him to fight with extraordinary creativity. His unpredictable combat style could initially surprise Superman because it ignores many traditional rules of combat.

Even so, Superman’s physical advantages remain overwhelming. His speed alone reaches levels that few fictional characters can consistently match, while his ability to attack from both long and close range creates constant pressure. Heat vision introduces an offensive option that bypasses simple physical exchanges, forcing Luffy to defend against attacks that cannot be solved with stretching or Haki alone.

Another major difference is endurance. Superman has repeatedly survived battles against world-threatening enemies while continuing to fight at full strength. Luffy possesses incredible durability by anime standards, but his strongest transformations require considerable stamina during prolonged combat.

5. Scarlet Witch

Scarlet Witch is one of Marvel’s most unpredictable and powerful heroes because her abilities extend far beyond traditional superhuman strength. While many characters rely on speed, durability, or physical attacks, Wanda Maximoff manipulates reality itself through Chaos Magic. Over the years, she has demonstrated the ability to reshape matter, alter probability, create powerful energy attacks, and influence reality on a massive scale.

Monkey D. Luffy excels in physical combat. His mastery of Observation, Armament, and Conqueror’s Haki, combined with Gear 5, makes him one of the strongest fighters in anime. His awakened Devil Fruit allows him to fight with incredible creativity, turning the battlefield into an extension of his rubber powers while overwhelming opponents through unpredictable attacks.

Scarlet Witch presents an entirely different type of challenge. Rather than meeting Luffy in a contest of strength, she can attack from a distance using abilities that ignore physical durability altogether. Reality manipulation, powerful magical constructs, and energy projection give her options that Luffy has never encountered in One Piece. Even his exceptional Haki provides little evidence that it could directly counter large-scale magical abilities capable of altering reality itself.

Luffy’s speed could allow him to pressure Wanda if he closes the distance immediately, and one direct hit would be extremely dangerous. However, Scarlet Witch rarely needs to rely on close combat when her greatest strengths lie in controlling the battlefield before opponents can reach her.

6. Doctor Manhattan

Doctor Manhattan exists on a level that very few comic book characters can approach. Following the laboratory accident that transformed him, Jonathan Osterman became a being capable of manipulating matter and energy at the atomic level. His powers extend far beyond superhuman strength, allowing him to reconstruct matter, perceive time simultaneously rather than sequentially, duplicate himself, teleport across vast distances, and survive attacks that would erase nearly any other character.

Monkey D. Luffy has overcome impossible opponents through determination, creativity, and extraordinary growth. His Gear 5 awakening represents the peak of his current abilities, allowing him to reshape his surroundings and fight in ways unlike any other One Piece character. Combined with advanced Haki, Luffy has earned his place among anime’s strongest protagonists.

Unfortunately, none of those strengths address the fundamental challenge Doctor Manhattan presents. The battle is not decided by physical strength or martial skill because Manhattan rarely engages opponents through direct combat. Instead, he can alter matter at its most basic level, reconstruct himself instantly, and interact with reality in ways that ignore conventional limitations.

Even if Luffy managed to land multiple powerful attacks, there is little evidence that physical force alone could permanently affect Doctor Manhattan. His perception of time also makes surprise attacks nearly impossible, since he effectively experiences past, present, and future simultaneously.

This is one of the most one-sided matchups on the list. Luffy deserves recognition for becoming one of fiction’s greatest shonen heroes, but Doctor Manhattan operates on a completely different scale. His reality-altering abilities, near-limitless control over matter, and cosmic awareness make him an opponent that Luffy simply has no realistic method of defeating.

7. The Beyonder

The Beyonder occupies one of the highest positions in Marvel’s cosmic hierarchy. Introduced during the original Secret Wars storyline, he possesses reality-altering abilities so vast that even Marvel’s greatest heroes and cosmic entities struggle to comprehend them. Throughout various comic book stories, the Beyonder has demonstrated complete control over matter, energy, space, and the laws of reality itself.

Monkey D. Luffy has reached extraordinary heights through determination, relentless training, and countless battles. Gear 5 transformed him into one of the most creative fighters in anime, allowing him to manipulate his surroundings while combining those abilities with advanced Haki. Against nearly every opponent in One Piece, Luffy finds a way to adapt, improve, and eventually claim victory.

The Beyonder represents a challenge that cannot be solved through growth or physical strength alone. Rather than competing in a traditional fight, he can simply alter the conditions of reality itself. He could remove the effectiveness of Luffy’s Devil Fruit, reshape the battlefield instantly, or rewrite the rules governing the encounter before Luffy has an opportunity to attack. Physical durability becomes almost meaningless against an opponent capable of controlling existence on such a massive scale.

Even Luffy’s incredible willpower offers little protection because Haki has never been shown to counter reality manipulation of this magnitude. The difference between these characters is not simply a gap in strength but an entirely different level of existence.

Luffy has earned his reputation as one of modern shonen’s greatest protagonists and has surpassed countless impossible obstacles throughout One Piece. However, the Beyonder belongs among Marvel’s most powerful cosmic beings, making this one of the clearest outcomes on the list.