
Protagonists are typically seen as the cornerstone of any narrative, guiding the audience through the plot as figures of empathy and aspiration. Yet, there are occasions when a side character bursts onto the scene, captivating viewers in unexpected ways. These supporting roles, often featuring rich backstories and limited screen time, deliver performances that not only leave a lasting impression but can even eclipse the primary heroes.
From strategic geniuses and mysterious mentors to compelling leaders and tragic figures, these memorable side characters have carved out their own iconic status. Their screen-time moments are not only unforgettable but often enhance the story’s emotional weight, sometimes overshadowing the central narrative itself. Below are eight side characters whose contributions to their respective stories were not just supportive—they were transformative.
8. Yuno
Black Clover

In Black Clover, Yuno stands as Asta’s lifelong rival, but he transcends the typical role of a shonen rival. Rather than fading into the background, Yuno emerges as a formidable character in his own right, often eclipsing Asta himself. His ascent within the ranks is both remarkable and pivotal, and during key battles, such as his bout with Zenon, Yuno demonstrates the tenacity and skill that showcases his potential as the future Wizard King.
While the story ostensibly revolves around Asta, Yuno remains a shining equal, making their confrontations feel like epic clashes between destined leaders.
7. Mikey
Tokyo Revengers

In Tokyo Revengers, while Takemichi is the apparent protagonist, it becomes increasingly clear that the plot often pivots around Mikey. Charismatic and unpredictable, Mikey’s role as a gang leader goes far beyond physical prowess—his strength lies in his ability to inspire loyalty and camaraderie. However, it is his tragic decline into darkness that truly captivates viewers, as Takemichi struggles to save him from a destiny fraught with despair. Mikey’s internal battle adds a depth that enriches the series, positioning him as the emotional core.
6. Ashes
Vinland Saga

In Vinland Saga, while Thorfinn is on a quest for vengeance, it is Askeladd who commands attention. He is not merely another Viking warrior; Askeladd is a master tactician, using cunning and strategy over brute force. His nuanced character reveals complex loyalties, especially when he betrays expectations by declaring allegiance to his Welsh heritage, marking him as one of anime’s most complex side characters.
Askeladd’s demise serves as a narrative catalyst, shifting the story’s trajectory dramatically and leaving Thorfinn—and the audience—reeling from the shock. Without Askeladd’s influence, Vinland Saga would not exist as we know it.
5. Forest
Bungo Stray Dogs

In Bungo Stray Dogs, while Atsushi is the lead, it’s Dazai who captures the audience’s intrigue. His quirky persona initially appears as mere comic relief, yet beneath this facade lies a deeply scarred individual shaped by a tumultuous past as a Port Mafia member. Dazai’s cunning and intellect shift the series’ tension, creating layers in his interactions, especially with rivals like Mori and close allies such as Chuuya. Even when others dominate the narrative, Dazai’s presence is undeniably felt, effortlessly drawing focus.
4. Gojo Satoru
Jujutsu Kaisen

In Jujutsu Kaisen, Yuji Itadori’s journey to harness his powers often plays second fiddle to Gojo Satoru, his enigmatic teacher. With a laid-back demeanor and extraordinary abilities, Gojo became a fan favorite with his stunning display of the Limitless technique. His most memorable moment—unveiling his powers against formidable foes—has solidified his status in contemporary anime culture.
Despite limited appearances, Gojo’s influence on the storyline is profound, epitomized by the Shibuya Incident arc, where his absence shifted the entire narrative focus, affirming his critical importance to the plot.
3. Kyojuro Rengoku
Demon Slayer

Among the slew of powerful characters in Demon Slayer, Kyojuro Rengoku shines distinctly. Introduced during the Mugen Train arc, his limited screentime did not hinder his ability to become a beloved figure in the series. Unlike other Hashira, Rengoku’s warmth and optimism stand out, creating an instant bond with Tanjiro.
Rengoku’s climactic battle against Akaza, where he valiantly fights despite overwhelming odds, showcases his unyielding spirit, leaving audiences profoundly affected. His legacy, marked by his heroic final words, resonates long after the scene concludes.
2. Urahara
Bleach

In the vast narrative of Bleach, Ichigo’s journey takes intriguing turns whenever Urahara makes an appearance. Not merely a quirky shopkeeper, Urahara is a master strategist, often ensuring that he remains three steps ahead of everyone around him. His intelligence and foresight significantly impacted Ichigo’s growth and shaped the series’ direction.
Significantly, it is Urahara who ultimately brings Aizen, a seemingly unbeatable antagonist, to his knees. This moment illustrates his ability to manipulate outcomes, reinforcing his status as one of the series’ most unpredictable and fascinating characters.
1. Itachi
Naruto

Initially perceived as the cold, calculated villain in Naruto, Itachi Uchiha’s narrative gradually unveils a complex tale of sacrifice and burden. He carries the heavy legacy of his clan’s sins, ultimately revealing his motivations to protect his brother, Sasuke. Each appearance he makes shifts the focus of the story, elevating the emotional stakes.
His dramatic clash with Sasuke is not merely a battle; it is a revelation of Itachi’s true intentions, leaving a lasting emotional impact on the audience. Even posthumously, Itachi’s re-emergence during critical arcs, such as the Fourth Great Ninja War, further solidifies his unparalleled influence, as he effortlessly overshadows the main narrative, proving yet again his strategic superiority.
(Rest assured, I didn’t shed a tear when my favorite character passed on with a grin that illuminated the scene… Nope, not at all.)
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