10 Anime Mentors Who Were Actually Terrible at Their Jobs

I’ve noticed something interesting: being a good mentor and actually getting great results aren’t always the same thing. There’s a history of overlooking how someone mentors if the results are impressive, and sometimes that means harmful methods are accepted. It’s especially striking in anime, where some of the most popular teachers are also, frankly, the most problematic.

When a student succeeds, harmful behaviors like neglect, emotional abuse, keeping secrets, and overly harsh training are often excused as simply being ‘tough love.’ While the achievements are genuine, it’s important to remember and acknowledge the damaging experiences that led to them.

Jiraiya Chose Research Over his Own Godson for Twelve Years

In the anime, Jiraiya is presented as a father figure to Naruto, making his long absence during Naruto’s childhood particularly noticeable. While Naruto grew up neglected and alone in the Hidden Leaf Village, Jiraiya spent those years traveling and, often, spying on women. Even after taking Naruto on as a student, a significant amount of their two-and-a-half years together was consumed by this same problematic behavior.

Jiraiya’s training of Naruto mainly involved teaching him the Rasengan and helping him control the Nine-Tails’ chakra – things Naruto was already starting to do himself. Naruto becomes a strong ninja not because of a well-planned training program, but because he improves despite the lack of one.

Might Guy Sidelined Two Students to Champion a Technique that Nearly Crippled the Third

Team Guy consists of three ninjas, but Might Guy primarily focuses his training on Rock Lee. While Neji and Tenten are part of the team, they don’t receive the same level of attention. Guy dedicates all his energy to mentoring Lee, pushing him incredibly hard, even though Lee can’t use chakra. To compensate, Guy trains Lee in the incredibly risky Eight Inner Gates technique, which could cause severe muscle damage and even paralysis.

When Lee fights Gaara and opens the fifth gate at just 13 years old, he almost destroys his career as a ninja. While Guy consistently shows genuine love and care in Naruto, it’s questionable whether teaching a young student a dangerous, self-sacrificing technique is responsible. This is especially true considering Neji and Tenten largely had to train and improve on their own, without much guidance from Guy.

Satoru Gojo Cannot Explain What he Instinctively Understands

Gojo, as a teacher in Jujutsu Kaisen, faces a common challenge for highly skilled individuals. Being naturally gifted doesn’t automatically make someone a good teacher. Because he’s a prodigy, his usual approach to guiding students is to put them in difficult situations – like facing a cursed spirit – and see if they can learn through trial by fire.

Gojo isn’t a traditional teacher. He’s frequently on solo missions, so he rarely leads formal classes. When he does teach, it’s usually unconventional and depends on how he’s feeling. Throughout Jujutsu Kaisen, Megumi, Nobara, and Yuji become stronger through practical experience and facing challenges, rather than through Gojo’s structured training.

All Might Handed Izuku a Power that Mutilated Him & Offered No Technical Roadmap

In My Hero Academia, All Might’s choice of Izuku as the next user of One For All feels well-justified, but his preparation for the transfer is surprisingly inadequate. All Might doesn’t have a plan to help Izuku handle a power that could seriously injure him, and his advice is limited to simply ‘use less,’ without explaining how to control it. As a result, Izuku spends months repeatedly breaking his bones – fingers, arms, and legs – while trying to learn.

Throughout My Hero Academia, Izuku suffers the long-term effects of All Might’s insufficient training. The injuries he sustains – broken bones and nerve damage – during his initial lessons continue to bother him. All Might gives Izuku his Quirk, but then doesn’t offer much guidance, leaving the teen to figure out how to control it on his own.

Biscuit Krueger Broke Children Down and Mistook that for Building them Up

In Hunter x Hunter, Biscuit’s training method involves pushing students to their physical limits, then providing just enough healing to allow them to repeat the process. This cycle of intense effort and recovery rapidly develops their Nen abilities by creating artificial challenges. While effective – the students progress at an extraordinary rate – Biscuit intentionally uses psychological tactics, even exploiting their bond with each other, to motivate them to push themselves even further.

Biscuit intentionally downplays her own strength during training, causing Gon and Killua to underestimate the true potential of human Nen abilities. She doesn’t have a clear reason for doing this – she simply likes the way it changes their interactions. Rather than genuinely guiding them, she’s essentially pushing two children to their limits as if they were simply resources to be exploited.

Master Roshi Ran an Errands Service that Occasionally Taught Martial Arts

Watching Goku and Krillin train with Master Roshi is pretty interesting. His methods are definitely unique – they’re not just about fighting! I noticed how he had them doing everyday tasks like delivering milk, building things, and even swimming with shells on their backs. It actually worked – they got stronger and more capable. But it also felt like Roshi was using them for chores around his house. While the work was part of their training, it also kept things running smoothly for him, and he never really separated the two. It was hard to tell where the training ended and the free labor began.

Roshi often trades lessons for Bulma’s company, and his personal interests frequently get in the way of serious training. His students quickly surpass his abilities after the 21st World Martial Arts Tournament, revealing that he doesn’t have much more to teach once they’ve learned the basics. It’s surprising that someone considered a master has such limited expectations for his students.

Kisuke Urahara Risked Ichigo’s Soul to Confirm His Own Suspicion

In Bleach, Urahara’s training of Ichigo involved a highly risky process, knowingly undertaken with the potential for Ichigo to lose his soul forever. While Urahara claimed Ichigo needed to regain his powers quickly, the fact remains that he deliberately chose the most dangerous approach and presented it as simple training, despite the enormous risks involved.

Ichigo not only survives his battles but becomes more powerful, though Urahara’s help isn’t entirely selfless. Every piece of advice or training Urahara gives has a hidden motive, making him a highly skilled manipulator but a flawed teacher.

Genkai Treated Suffering as a Lesson Rather than a Method

Genkai’s training focuses on pushing her students to their physical limits, believing that growth comes through enduring intense pain. She doesn’t teach techniques so much as test pain tolerance, and remains detached from any suffering her student, Yusuke, experiences. This isn’t maliciousness, but a firm conviction that true learning only happens through hardship.

The way Genkai transfers her Spirit Wave Orb at the end of her story in Yu Yu Hakusho perfectly highlights the flaws in her teaching. She gives Yusuke all of her remaining life energy, even though it could kill him, not because he’s prepared for it, but because she’s dying and doesn’t want the power to be lost. This final act shows that Genkai cared more about preserving her power than protecting her student, which really sums up her entire mentorship style.

Lisa Lisa’s Introductory Lesson was a Trapped Pit with Death as the Alternative

In JoJo’s Bizarre Adventure: Battle Tendency, Lisa Lisa demonstrates her mastery of Hamon with a challenging test for Joseph Joestar. She drops him into a pillar filled with oil and explains that the only way to escape is to climb out using Hamon-enhanced breathing. Failing to do so means he’ll drown. Caesar Zeppeli had already completed this same test, and Lisa Lisa presents it as a typical part of her training, not an unusual punishment.

A major problem arises when Joseph fights the Pillar Men without realizing Lisa Lisa is his mother. Throughout their entire training in Battle Tendency, she deliberately keeps this secret from him. Joseph battles for humanity, to avenge his grandfather, and to stay alive, completely unaware he’s also fighting alongside a family member, all because Lisa Lisa believes he hasn’t earned the right to know.

Izumi Curtis Sent Two Grieving Orphans to Survive Alone and Called it Philosophy

In Fullmetal Alchemist: Brotherhood, Ed and Al come to Izumi shortly after their mother’s death, still deeply affected by their loss. Her initial response is shocking: she leaves them stranded on Yock Island for a month with absolutely no supplies or explanation, simply telling them to survive. While the lesson she’s trying to impart – that life and death are part of a natural cycle – is profound, putting grieving children through such a harsh ordeal to learn it is a questionable method.

Izumi’s biggest mistake in Fullmetal Alchemist: Brotherhood isn’t just that she tried human transmutation and suffered the consequences – losing an organ as punishment. It’s that she knew the terrible price of that act, yet she didn’t warn Edward and Alphonse. Perhaps she was embarrassed, proud, or believed they needed to learn the lesson themselves, but she kept the crucial information that could have saved them from making the same dangerous mistake.

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Test Your Knowledge: Tough Love or Toxic Training in Anime?

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2026-04-23 23:52