Side characters in anime often play roles we either adore or despise, fulfilling their purpose and fading from memory over time. Yet, there are those rare side characters who defy this norm, making such a profound impact on the story that they remain unforgettable throughout the show and years to come, even after the series concludes. These side characters are beautifully written, and their role in the series turn out to be so major that they change the course of the whole story while leaving a drastic impact on the main character and the entire cast.
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In fact, in certain instances, the distinction between the main character and these side figures blurs so much that fans wonder if they are the true protagonists of the series. This article pays homage to those legendary characters whose presence transformed our anime experience into something truly remarkable.

10Mikey - Tokyo Revengers
Tokyo Revengers
Interesting facts about Mikey:
Manjiro Sano, known as Mikey inTokyo Revengers, stands out as one of the finest side characters in anime. His magnetic charm and compelling presence rival that of any main protagonist. Even for those unfamiliar with the series, Mikey’s allure surpasses Takemichi as a leading figure. His aura commands attention, his renowned reputation within Japanese gangs, and hisunparalleled combat skillsproject the essence of a main character.
What makes Mikey even more endearing is hiswell-written backstory, blending a troubled pastwith moments of endearing charm. Furthermore, his journey through alternate timelines reveals a darker, ominous future, adding intrigue to his fascinating character.

Release Date
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April 11th, 2021
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9Koro-sensei - Assassination Classroom
Turned A Group Of Unruly Students Into Exemplary Ones
Assassination Classroom
Interesting facts about Koro-sensei:
Koro-sensei might seem like the central figure to most fans, but surprisingly, Nagisa takes the lead while Koro-senseiplays a significant side character role. Despite his goofy antics and comical appearance, this yellow goofball posed a grave threat to Earth, with its fate hanging on a countdown. Assigned with the task of ending Koro-sensei’s life, Class 3-E faced a peculiar dilemma: eliminate their teacher, who paradoxically became theirmost exceptional mentor.
The bond forged between Koro-sensei and his students defied explanation, creating unforgettable moments of silliness and passion for teaching, and everything combined solidified Koro-sensei as an unforgettable side character throughout the anime verse.

January 9th, 2015
8Levi Ackerman - Attack On Titan
The Strongest Soldier In The Series
Interesting facts about Levi Ackerman:
Unlike Koro-sensei or Mikey, Levi Ackerman isn’t the one who stole the show from the main character; however, there were uncountable moments within the series where Levi Ackerman stole our hearts. His mere presence kept us hooked for something unexpected in the series and the moments when he stepped into the battles; well, words aren’t enough to express that feeling!
Levi was a guy who spoke less, was hard to read, and always kept a stoic look on his face, yet he remained a fan favorite, not initially, but certainly as the series progressed. From his dark past to his obsession with cleaning, the fear he felt with the presence of Kenny, his love and respect for Erwin, and his unspoken love for his comrades, every single aspect developed Levi into a one-in-a-million character.

April 7th, 2013
Crunchyroll
7Hisoka Morow - Hunter X Hunter
A Beloved Character Despite Being A Villain
Hunter x Hunter
Interesting facts about Hisoka Morow:
Hisoka stands out as one of the most brilliantly crafted characters. Is he a villain? Uncertain. A hero? Perhaps. He shifts allegiances throughout, delivering bothterrifying deathsand granting opponents a chance to grow stronger for future battles. His ultimate desire? Nothing surpasses the thrill of an exhilarating fight, an experience that ignites his very being.
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Despite being a sadist and a troublemaker for our heroes, hating Hisoka is an impossibility. That is the kind of character he is. His insatiable thirst for battles extends to challenging his gang leader, Chrollo, a figure who matched famed assassins Silva and Zero. But that’s Hisoka for you, preferring a glorious demise in combat over facing a dull opponent.

October 2nd, 2011
6Vegeta - Dragon Ball Z
Pushed Goku To Surpass His Limits
Dragon Ball
Interesting facts about Vegeta:
Akira Toriyama once mentioned his lack of fondness for Vegeta in an interview. Yet, as devoted fans of theDragon Ballfranchise, we vehemently disagree.Despite his initial portrayal as a villain, Vegeta’s evolution and pivotal role as a supporting character have endeared him to fans worldwide.
His transformations, intense battles, not-so-lovey-dovey relationship with Bulma, and spirited rivalry with Goku have gifted us with unforgettable moments. While Goku remains the series' focal point and holds our admiration, imagining the world of Dragon Ball Z fans, Vegeta feels inconceivable.
February 26th, 1986
5Satoru Gojo - Jujutsu Kaisen
More Popular Than Yuji
Jujutsu Kaisen
Interesting facts about Satoru Gojo:
The success ofJujutsu Kaisen, despite being a newcomer, surpasses many long-running shows. In this, Gojo Satoru, a beloved and pivotal yet side character, stands unrivaled in adoration. His fan following, especially among girls, exceeds any other character in the entire anime verse. It’s astounding to see a fictional character gaining such immense popularity that their demise sparks protests and candlelight vigils across countries. That character is Satoru Gojo.
Blessed with the allure of a Greek God, remarkable humor, and incredible strength, Gojo embodies a complete package. It’s almost astonishing to remember that Gojo is technically a side character, considering how his presence eclipses even Yuji Itadori, the main focus of the series.
October 3rd, 2020
4Itachi Uchiha - Naruto
Itachi’s Actions Shaped The Whole Life Of Sasuke
Interesting facts about Itachi Uchiha:
Itachi Uchiha epitomizes sacrifice in its purest form. His transformation in the series, from a caring brother to a villainous assassin and eventually into a heroic figure, marks him as anexceptionally well-crafted character, among the very best. Itachi’s actions, driven by his love for his brother Sasuke, pushed boundaries unimaginable to empower him.
His master plan went to the length of assuming the role of a villain even beyond death, all for Sasuke’s growth. The depth of love he held for his brother is unimaginable, and his life was nothing but a big bag of struggles and sacrifice, yet he never voiced a complaint. Despite his association with the ruthless Akatsuki, he retained his humanity, believing that someday, things will eventually change for good.
October 3rd, 2002
3Roronoa Zoro - One Piece
Zoro’s Sacrifices Strengthened Luffy’s Resolve As A Captain
Interesting facts about Roronoa Zoro:
Roronoa Zoro, a legendary character inOne Piece, has been sailing with Luffy for ages, making him a standout sidekick. His bond with Luffy is unbreakable, standing tall in tough times. Zoro’s sword skills? Unmatched! He wields three swords at a time, each with a tale, and his clashes speak for his mastery in handling three swords at a time.
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Although he has a tough demeanor, Zoro hides a softer side, andhis comical sense softens the intense moments, bringing laughter to the crew. Especially the moments when he forgets directions add hilariousness to the show. Zoro’s growth is incredible; his dreams fuel him and inspire everyone else. In the vast sea of side characters, Zoro shines bright, wielding not just swords but an enduring legacy of loyalty, strength, and sheer coolness.
October 20th, 1999
2Kenpachi Zaraki - Bleach
One Of The Strongest Soul Reapers Despite Lacking Bankai
Interesting facts about Kenpachi Zaraki:
Kenpachi Zaraki is a character we can’t help but watch endlessly on screen, yet one we’d never wish to encounter in reality. Kenny’s sole passion is battle; it’s his reason for existence. He finds joy only in facing stronger and worthy opponents. His fixation on fights even leads him to clash with his own comrades, although most of them don’t reach his expectations. As for his true power, not even Kenpachi knows the extent of it, leaving us incapable of gauging his strength.
Despite being one of the series' mightiest characters, he’s yet to unlock a Bankai, a form that amplifies a Soul Reaper’s might, and to be honest, Zaraki doesn’t need it for most of his battles. His raw strength is enough to take down his opponents. If one word defined him, it would be “Beast.” However, there’s more to Kenny than meets the eye. He harbors a tender side, nurturing his Lieutenant Yachiru like a father figure and rushing to aid his comrades whenever necessary.
October 5th, 2004
1Jiraiya - Naruto
The Reason For Naruto’s Growth
Interesting facts about Jiraiya:
No book could capture the immense valor of Jiraiya in its entirety. Despite possessing all the qualities of a perfect main character, he remains a side character inNaruto, yet one with the most profound impact on the storyline. Jiraiya stood as the architect behind molding the series' greatest warriors, driven by his relentless pursuit of a flawless ninja world.
However, his dream of peace was shattered by his own students. This compassionate teacher bravely confronted Pain, fully aware of his slim chances. Jiraiya’s sacrifice unveiled the truth about Pain, inspiring Naruto to perfect the Sage Mode, surpassing even his revered master. Without Jiraiya’s sacrifice, the revelations about Pain and Naruto’s evolution would not have unfolded as they did.