In the anime world, main characters usually get all the glory. But 2025 was the year of the side characters who became kings and queens in their own right. They brought overwhelming power, unique personalities, or explosive moments that outshined even the leads.
Here are the 10 standout side characters who completely stole the show this past year.
10. Gaoshun (The Apothecary Diaries Season 2)
Though just a palace guard, Gaoshun quickly became the muscular mascot of The Apothecary Diaries. With his tough exterior but warm heart, he perfectly balances Jinshi’s coldness and Maomao’s cleverness. His action-packed takedowns of villains and his cluelessly funny moments lighten the political tension in the series.
9. Kyo Kasahara (Blue Box)
In the gentle sports romance Blue Box, Kyo shines as the warm, dependable “boy next door”. As the badminton team captain, he never acts arrogant despite his natural talent. His moment of sacrificing a match to support a friend in crisis truly touched viewers, making him the most trustworthy character in the series.
8. Benimaru Shinmon (Fire Force Season 3)
The “strongest captain” Benimaru never disappoints fans. In season 3, behind his “Moonlight Mask” persona, he supports Special Fire Force Company 8 with undeniable coolness. His carefree attitude and sharp, philosophical remarks remind fans of Aizawa from My Hero Academia. Usually indifferent, but when provoked, opponents have no choice but to back down.
7. Shisui “Loulan” (The Apothecary Diaries Season 2)
Shisui proves you don’t need muscles to command attention. Her intelligence, calm demeanor, and mysterious status in the palace add new layers of drama. Her sharp exchanges with Maomao provide intellectual satisfaction for the audience.
6. Naito Mudano (Tougen Anki)
Both mentor and frontline fighter, Mudano draws viewers with his logical approach and quiet nature. In the 2025 adaptation, his solo defense of Oni comrades in Tokyo against Momotaro’s attack sparked excitement, cementing his role as an exemplary teacher.
5. Enjin (Gachiakuta Season 1)
Enjin discovered Rudo and brought him into the Cleaners organization. His speed-based fighting style and quick adaptability turned every rescue scene into a visual spectacle. As a side character with natural leadership, he sometimes makes viewers forget who the main protagonist is.
4. Reinhard van Astrea (Re:ZERO Season 3)
The “Sacred Sword” Reinhard in season 3 is a powerhouse. Known as the “Knight of all knights,” he wields the legendary Dragon Sword Reid. Creator Tappei Nagatsuki confirmed Reinhard as the strongest character in the entire series, far surpassing Subaru. His elegance and nation-shattering strength mean that whenever Reinhard appears, the battle’s outcome is almost decided.
3. Cha Hae-in (Solo Leveling Season 2)
While she was only briefly seen in season 1, the “Hunter Queen” truly shines in season 2. With her dazzling sword dance skills, she proves she’s not just Jinwoo’s love interest but a top-tier S-rank hunter. It’s no surprise she topped the polls for most popular female side character in Spring 2025.
2. Shoto Todoroki (My Hero Academia Season 8)
Although My Hero Academia centers on Deku, Todoroki always knows how to steal the spotlight. In the epic final battle early 2025, his mastery of both Ice and Fire reached new heights. Remember, Todoroki once defeated Deku at the Sports Festival, and his latent power keeps all opponents wary.
1. Igris (Solo Leveling Season 2)
The top spot goes to Igris, Sung Jinwoo’s Dark Knight. From his first appearance, Igris impressed with absolute loyalty and the fighting style of a legendary knight. His calm, dignified presence and razor-sharp swordplay sometimes excite fans even more than Jinwoo’s power-ups. Igris is not just a shadow, he symbolizes honor and ultimate strength.