When training, you want to be taught by the very best. They will show you the way. These mentors claim to be among the best. However, take the lessons of these guys to heart, and you will most likely regret it.
These guys think they are great at what they do and decide to train others in their ways. However, they are more often than not the worst at the very things they teach, and thus training with them could be considered anti-training.
In some cases, their student will be well aware of how bad they are and simply attend their lessons out of pity. Others will be honest and tell them how bad they are. Then there are those students who will think they are being great teachers by showing them what not to do.
Alternatively, the teacher may actually be good at what it is that they are teaching but terrible at teaching it. In these cases, they just don't know how to get their lessons across.
A common subversion of this is when the mentor (usually an Eccentric Mentor) gives a lesson that seems outlandish (like Wax On, Wax Off), but said lesson becomes useful later, especially to better understand the real lessons.
It's not so hard for the student to surpass the teacher here, because the teacher had so little to surpass.
Compare Obsolete Mentor, who can do what they teach and are capable of teaching, but they are a bit behind in how it works. Compare More Powered Protégé, in which the disciple has more powers than the mentor (and sometimes overlaps with this). Compare Sabotutor for those who deliberately train their pupil wrong. For characters generally giving advice for things they know nothing about, see The Blind Leading the Blind. See also Anti-Role Model, when a character is presented as someone the audience should not emulate. Contrast Uncertified Expert, where the character is actually good at what he does, but never got the training or license for it.
- Tondemon Higashi from Battle Club like Genma below is a played with example. He led Swan Academy to eight successive all-Japan championships but is shown to be Secretly Selfish and shown to be something of a Jaded Washou. Kuniko Mukoda Start of Darkness was a wrestling prodigy like his first student Ginkakuji Tamami. However he saw her as little more then a Poor Man's Substitute and never believed that she could make it. He quickly planned on replacing her upon meeting Tamamis daughter.
- In Cells at Work!, Red Blood Cell (AE3803) is given a Kohai Red Blood Cell to look after and mentor. Only AE3803 is the resident Cute Clumsy Girl with No Sense of Direction and gets easily distracted, while her kohai is disciplined and serious about the job. AE3803 herself lampshades she's a terrible senpai and even apologizes to her kohai. Though to her credit, what she lacks in competence, AE3803 makes up in determination, continuing to deliver oxygen even during the Darkest Hour and vowing to keep going to the very end. It is this undying determination that does inspire her kohai.
- Mob Psycho 100: Arataka Reigen is a famous esper who has the young Shigeo Kageyama (aka Mob) as his disciple, who has great esper powers. In reality, Arataka is a Con Man who has no powers and only uses Mob to manage real spirits. Subverted since Arataka is a father figure for Shigeo, teaching him to use his powers correctly and encourage him to not use his powers against other people.
- Ranma ½:
- Ranma's father Genma is a played with example. Most of the time he is actually a very competent teacher of martial arts who does know how to instruct and motivate, although quite a Sink-or-Swim Mentor (and generally a jerk, morally speaking). However, his attempt to teach the "Cat Fist" technique was a fiasco that left Ranma mentally traumatized for life, because Genma didn't bother reading the full manual on how to teach that technique which warned that it was dangerous and stupid.
- Happōsai, the grandmaster of Anything Goes Martial Arts. While a very formidable martial artist, he's a terrible teacher who makes Genma look proficient in comparison. All of the flashbacks of him with Sōun and Genma show him forcing his students to steal food and underwear for him, rather than teaching them any proper martial arts. When he returns in the present and takes Ranma in as his student, he also adds in groping Ranma-chan's breasts and making her wear girly outfits. It's little surprise all his students try to get rid of him and at times attempt to murder him whenever given the chance.
- Interesting case in the biopic Searching for Bobby Fischer - trainer Bruce Pandolfini (who was the main advisor of the film!) comes over as a Jerkass who is ultimately responsible for prodigy Josh Waitzkin resigning chess, by hammering on the fight part of chess. He has a point, but his pupil is more into fun and the clash of the personalities lets everything go south.
- Harry Potter and the Chamber of Secrets: A famous wizard, Gilderoy Lockhart, is hired by Hogwarts School to teach the students Defense Against the Dark Arts. However, when he begins teaching, it quickly becomes apparent that he's rather incompetent, while passing his failures off as "accidents". That he's revealed to have stolen anonymous witches and wizards' feats in order to become famous doesn't help. This was actually invoked by the headmaster, Dumbledore: when questioned by staff about why he was hiring so incompetent a teacher, he said there were many things Lockhart could teach the students; how not to act, for instance.
- Big Time Rush: In "Big Time School of Rocque", Gustavo creates a school in the studio for the band to go to instead of the Palm Woods school like everyone else. Every teacher he hires for the boys end up flawed, such as a temperamental and nervous man who quit to be come a "Man Band" in Germany, and WWE wrestler Chris "The Masterpiece" Masters, who made them spend their time exercising through desk lifts.
- One episode of iCarly has Carly turn to Spencer for art lessons after being unable to even draw a decent looking rabbit. Despite being a talented artist, his mentoring included tactics such as waking her up in the middle of the night to draw his foot (which was covered in a sticky green substance), making her draw hobos in the park, and a lecture on the history of the color yellow. Carly gets fed up and leaves for a different art teacher, however she turns out to not be much better as she only got so far as teaching the class to make straight and unconnected lines before Spencer calls her out on being uncreative.
- Ned's Declassified School Survival Guide:
- In "Guide to Shyness", Cookie decides to teach a bunch of shy students how to have "Cookie Confidence". He makes them to a lot of insane things he himself did, like slam-dunk a basket ball using a gigantic overpowered trampoline, use a mop-bucket slingshot, and dig tunnels through the school. Eventually, his student get fed up and turn against him when he tries to make the fight a psychopath, ironically displaying the very confidence he'd worked to teach them in telling him off.
- "Guide to Tutors" has Ned dealing with multiple bad tutors. One is a loudmouthed Nerdy Bully; One is a Motor Mouth who can't stay focused; And one is a Jerk Jock who is willing to just give Ned the answer for a date with his friend Moze. Eventually, his science teacher Mr. Sweeney is the one to be Ned's tutor once Ned expressed his problems. Meanwhile, Mose herself was mentoring a class of fifth graders. Despite being a good teacher, she failed to teach her class anything because they were so attracted to her. She could only get them to learn by making herself hideously ugly.
- Portal 2: Wheatley tries to give Chell whatever advice he can throughout their time together, but his advice is always terrible. Figures since he was literally designed to be a moron.
- Punch-Out!!: Glass Joe is known for being the worst boxer in the franchise. That being said, he's the one who trained Gabby Jay from Super Punch-Out!! how to box. Gabby Jay's only win is against his own mentor, and his record ends up being about the same.
- Street Fighter: Dan Hibiki serves as a fighting mentor for Sakura and Blanka. However, both of his students are much better fighters than he is, and Sakura even tells him that his fighting style sucks in Pocket Fighter.
- Wing Commander IV: The Price of Freedom: Reckless veteran Maniac teaches rookie Catscratch some flight maneuvers. catscratch almost gets shot down trying them out in his next mission, and you have to choose whether to complete your own mission or rescue the rookie.
- Cobra Kai: An older Daniel LaRusso eventually opens the Miyagi-Do dojo in order to pass on the teachings his late mentor taught him. However, in his obsession over defeating Cobra Kai once and for all, he merely teaches his students how to fight to defend themselves, failing to pass on the lessons Mr. Miyagi taught him on pacifism and how to solve problems without violence. This failure greatly contributes in the disaster that is the second season finale.
- Don't Hug Me I'm Scared: The "teachers" of each episode attempt to teach the main characters about something they should in theory know tons about, like a computer teaching, well, about computers. However, these lessons never teach the characters anything, are full of inconsistencies, poor logic and Blatant Lies, and succeed only in scaring or manipulating the characters into following their personal agenda. In some cases, such as "Creativity", they are actually taught not to be creative and punished when showing actual creative ability.
- On Big Mouth pretty much every Hormone Monster depicted so far is one of these. While they encourage sexual activity, they also tend to try to push their kids to become juvenile delinquents. Nick, Andrew and Jessi in particular are prone to complaining that their Hormone Monsters are more of a hindrance than a help.
- Earthworm Jim: In one episode, Jim finds a sword the claims to be a legendary sword wielded by great heroes and offers to teach Jim how to be one. Near the end of the episode however, the sword admits that nobody that ever wielded him ever won a fight. Finding this out, Jim immediately discards the sword.
- My Little Pony: Friendship Is Magic: Applejack and Rainbow Dash serve as this in the episode "Non-Compete Clause". While normally good teachers, their competitive nature makes them unable to teach the students the lessons on cooperation as they end up constantly arguing with one another instead. In the end though, it works out with the students assuming they showing them what cooperation isn't in order to give them the idea of what it is. Twilight was able to figure out the truth, and it shows that in the end, the two don't get any better.