In the Anime, Secondary characters are usually the key to complementing the protagonists and enriching the story. When they are well built, they help give rhythm, emotion and greater complexity to the plot. However, they do not always fulfill that purpose, and sometimes their mere presence can be detrimental. In this list we will see clear examples of secondary ones that, instead of contributing, ended up subtracting quality from large series.
Secondary characters who ruined their own series
Before entering the list, it is important to remember that a poorly developed secondary character can break the balance of any Anime. Whether they are poorly written, exaggerated or simply annoying, these characters become a weight that distracts from what really matters: the story and its protagonists. Here we bring together those who have been criticized the most by fans.
Mass Amane – Anime: Death Note

inside the anime Death Note, , Mass Amane He became a character who divided opinions. His blind devotion to LIGHT And his excessively dramatic personality broke with the dark and intelligent tone of the series. Although it had potential as a strategic ally, it ended up reduced to a stereotype of a girl in love who contributed little to the main plot, subtracting seriousness from the story.
Near and Mello – Death Note

When they arrived Near and Mello to anime, fans already missed L. His presence was perceived as a forced shadow of the original detective. Neither of them managed to match the tension and the charisma that L represented, making the final stretch feel less impressive. Instead of bringing freshness, they became a reminder of how much it had been lost.
Excalibur – Anime: Soul Eater

in the anime soul eater, , Excalibur He went from being a peculiar character to a real headache. With his endless speeches and self-centered attitude, he managed to get many viewers to see their scenes as a waste of time. More than a comic relief, it became an obstacle that stopped the narrative and disconnected the audience from what was important.
Minoru Mineta – Boku no Hero Academia (My Hero Academia)

One of the most controversial characters in anime My Hero Academia It’s definitely a mineta. His harassing behavior and his obsession with the girls generated immediate rejection among the fans. In a series with heroes aspiring to be symbols of justice, mineta It stands out for wrong reasons, offering uncomfortable moments that subtract from the epic tone of the story.
Matsuri Mizusawa – Anime: Citrus

the role of Matsuri, from the anime citrus. is to be a constant obstacle between Yuzu and mei. While this is not a bad attribute for a character, his redemption arc is often criticized for being rushed and poorly performed. What makes Matsuri an even more unpleasant character is that he initially presents it as someone who enjoys separating couples.
Hifumi Yamada – Danganronpa: The Animation

in the anime Danganronpa, , Hifumi Yamada He is remembered more for his irritating character than for his relevance in the plot. His role as a comic otaku became repetitive and cartoonish, taking away the tone of mystery and tension from the series. Instead of bringing an interesting contrast, he became a character that many wanted to skip.
Kikyo Kushida – Anime: Youkoso Jitsuryoku Shijou Shugi no Kyoushitsu E (Classroom of the Elite)

the anime Classroom of the Elite It has a complex cast, but Kushida completely out of tune. Although his kind girl facade hid a dark side, his intrigues were exaggerated and incoherent, which broke the logic of the plot. Instead of enriching academic competence, it ended up subtracting credibility and generating generalized rejection.
Nina Einstein – Code Geass

in the anime Code Geass, , girl He is one of the most hated characters by the community. his extreme racism and his obsessive attraction to Euphemia They were disturbing, taking seriousness away from key moments. What could have been a supporting character with nuances became an example of how a bad build can ruin the overall experience.
Gabi Braun – Anime: Shingeki no Kyojin (Attack on Titan)

Few secondary characters caused as much controversy as Gabi in the anime Attack on Titan. His impulsive attitude and violent decisions, including unforgivable actions, generated a wave of rejection. Although it was written to provoke debate, for many fans its presence broke with the carefully constructed tension in the series.
Asahi Saiba – Shokugeki no Soma (Food Wars!)

In the final season of Food Wars!, , Asahi It arrived as an unexpected antagonist, but fans perceived its introduction as forced. His overwhelming ability and his lack of serious background turned him into a flat character, who distorted the effort of the entire previous narrative. For many, their inclusion was the main reason for the slump of the last season.
These secondary characters are proof that in the Anime It is not enough to have a strong protagonist. The support cast can raise a series or sink it if it is not well built. When writers bet on exaggerated stereotypes or introduce unnecessary figures, the result is usually a deterioration of global quality. Cases on this list have become clear examples of how a secondary evil can ruin even the most successful anime.