Eiichiro Oda’s One Piece began serialization in Weekly Shonen Jump in 1997 and is now approaching the conclusion of its long-running story. The anime adaptation began airing in 1999 and has since become a global phenomenon. Over the decades, One Piece has established itself as the best-selling manga series of all time, thanks to its sprawling story, intricate world-building, and countless mysteries surrounding Luffy and the Straw Hat Pirates.
However, even a series as successful as One Piece is far from perfect. As ComicBook points out, fans have continued to criticize several aspects of the series. Among the most common complaints are its repetitive story structure, notoriously slow anime pacing, and the way some members of the Straw Hat crew have gradually been pushed into the background.
Here are three major weaknesses of One Piece that remain difficult to overlook.
1. The Pacing Is Still Too Slow After Nearly Three Decades
The biggest criticism surrounding the One Piece anime is arguably its slow pacing. Produced by Toei Animation, the anime has been airing since 1999 and has surpassed 1,100 episodes. While its enormous episode count is a testament to its longevity and popularity, it can also make the series extremely intimidating for newcomers.
Part of the problem comes from the traditional weekly anime format. Because the anime has continued airing while Oda’s manga is being serialized, the adaptation has had to avoid catching up with the source material.
As a result, the anime has often stretched relatively small amounts of manga content across an entire episode. This can lead to extended reaction shots, repeated scenes, lengthy transitions, and sequences that feel unnecessarily drawn out. Even though the animation quality has improved dramatically over the years, the fundamental pacing issue has remained.
For longtime fans, this remains one of the most frustrating aspects of One Piece especially when the story itself contains enough material to move at a much faster pace.
2. The Villains Are Often Less Memorable
Another criticism involves One Piece’s villains. When fans discuss iconic shonen antagonists, characters such as Madara Uchiha from Naruto or Sosuke Aizen from Bleach are frequently brought up. Their overwhelming power, distinctive personalities, ambitions, and complex motivations have helped them become some of the most recognizable villains in anime.
One Piece has certainly produced memorable antagonists, but critics argue that many of them lack the same level of depth. Donquixote Doflamingo is one notable exception. His twisted morality, worldview, personal history, and mysterious ambitions made him one of the series’ most compelling villains.
Other major characters, however, have not always received the same treatment. Characters such as Akainu and Kizaru, despite being portrayed as exceptionally powerful figures, have sometimes been criticized for lacking sufficiently developed personal motivations. Their roles and abilities are impressive, but their emotional depth can feel comparatively limited.
The same criticism can be applied to some of the characters serving under Imu. As the story enters its final stages, there is enormous potential for these figures to become major threats, yet some fans feel that they still lack distinctive personalities and compelling motivations.
Of course, One Piece is not necessarily trying to make every villain sympathetic. Oda frequently uses villains as representations of oppressive systems or distorted ideologies rather than characters audiences are expected to empathize with. Still, more substantial characterization could make some of the series’ most powerful antagonists considerably more memorable.
3. The Straw Hat Pirates Are Increasingly Being Pushed Aside
Perhaps the most controversial criticism is that some members of the Straw Hat Pirates no longer receive enough meaningful development. The crew remains at the center of Luffy’s journey, and the members continue to appear together throughout the story. However, their individual character arcs have become increasingly uneven. Outside of Roronoa Zoro and Sanji, relatively few Straw Hats have received substantial development in recent arcs.
Nico Robin once had one of the most iconic character arcs in One Piece. Her story in the Enies Lobby arc remains one of the emotional highlights of the entire series, particularly because it explored her loneliness, trauma, and desire to live. Yet in the years since, Robin has often occupied a more supporting role. She has certainly received memorable moments including her fight against Black Maria but opportunities for significant character development have become increasingly rare.
A similar problem can be seen with Nami. Her dream of creating a complete map of the world was established as a fundamental part of her character. However, as the story has expanded into increasingly complicated conflicts involving the Void Century, World Government, Yonko, and the final saga, her personal dream has rarely been the central focus. Nami remains crucial to the crew, but her individual narrative has not always received the attention fans might expect.
Usopp may be the clearest example. His journey from a cowardly storyteller into a brave warrior has always been one of the most promising character arcs in One Piece. Fans have long expected him to experience a major transformation, particularly given his dream of becoming a brave warrior of the sea.
Yet despite occasional standout moments, many viewers feel that Usopp still has not received the sustained development necessary to fully realize that potential.
One Piece Is Still One of the Greatest But It Isn’t Perfect
None of these criticisms erase what makes One Piece extraordinary. Its enormous world, interconnected mysteries, emotional storytelling, creative powers, and decades-long foreshadowing remain virtually unmatched. Few manga have managed to maintain such a massive narrative while continuing to generate theories and discussions decades after their debut.
But its very scale has also created some of its biggest problems. The slow pacing can make the anime difficult to follow, some villains lack the depth of the most iconic shonen antagonists, and several Straw Hat Pirates have been given less individual development as the story has expanded.
As One Piece approaches its final saga, these issues may become even more noticeable. With so many new characters and increasingly important plotlines competing for attention, fans may reasonably wonder whether Oda can give the original Straw Hat crew the spotlight they deserve before the story finally reaches its conclusion.
Sources: Znews