"I am your enemy, the first one you've ever had who was smarter than you. There is no teacher but the enemy. No one but the enemy will ever tell you what the enemy is going to do. No one but the enemy will ever teach you how to destroy and conquer. Only the enemy shows you where you are weak. Only the enemy tells you when he is strong. And the rules of the game are what you can do to him and what you can stop him from doing to you. I am your enemy from now on. From now on, I am your teacher."The polar opposite of the Treacherous Advisor, the Stealth Mentor is a type of Trickster Mentor who poses as an antagonist for much of the story but ultimately reveals that all of their actions have been a sneaky way of forcing the hero into becoming stronger. A subtrope of the Reverse Mole, can overlap with the Mysterious Protector. This character type will inevitably be an Enigmatic Minion to the heroes at some point prior to their reveal. Any losses will be revealed to be intentional. This can take a couple of forms: either giving the aspiring hero a taste of what he's going to be up against in the big leagues because that's The Only Way They Will Learn, or encouraging a budding rebel by giving him something to push against. The Stealth Mentor's motives may vary: some genuinely have the hero's best interests at heart, while others may be grooming him as a Worthy Opponent - in the most lethal scenario this may be part of a plan in which My Death Is Just the Beginning. If he is a true villain and needs the hero to be more powerful as part of an Evil Plan, it's I Need You Stronger instead. This is Training from Hell, and then some, because the hero really believes that this guy is out to get him. If the Stealth Mentor's actions could plausibly have gotten the hero killed (and the Stealth Mentor cares enough for this to be a problem), this is a form of Gambit Roulette. Otherwise it falls within the Omniscient Morality License. If a recurring antagonist or Aloof Big Brother is a popular character, expect lots of Fan Speculation to this effect. It also doubles as a convenient Hand Wave to the question of "if he's such a nice guy, why does he keep trying to brutally kill me?" A lighter variant is the parent who encourages a romance by pretending to vociferously oppose it, as Prospero does in Shakespeare's The Tempest. Compare the Compassionate Critic.
— Mazer Rackham, Enders Game
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Anime and Manga
- InuYasha: Once Sesshoumaru had undergone enough Character Development to learn he was meant to pass on Meidou Zangetsuha to Inuyasha, he made the decision to put Inuyasha into a Die or Fly test to prove Inuyasha's worth as Tessaiga's master once and for all. All he told Inuyasha was that he'd give up both Tessaiga and Tenseiga after the fight, regardless of whether Inuyasha won or lost, but that he'd kill Inuyasha if Inuyasha lost. Inuyasha didn't even realise he'd won (or what he'd won) until Sesshoumaru discarded Tenseiga and passed on Meidou Zangetsuha which forced Inuyasha to master Meidou Zangetsuha as fast as possible to save both their lives from Hell itself.
- In Mahou Sensei Negima!, Chao Lingshen borders on this. While she does act as a true enemy in a Well-Intentioned Extremist sense, attempting an Evil Plan to stop a future disaster, some aspects of her actions and responses suggest that she at least believed that, if he could become strong enough to defeat her, Negi might be able to stop the catastrophe himself. She makes several moves to aid Negi and encourage him to grow stronger, and when fighting frequently tells him to push further and give everything he has to beat her.
- It's speculated that the crux of Gendo's plan in Neon Genesis Evangelion was to get Shinji to hate him in order to synchronize with Unit 01. Of course, this is heavily debated, given that much is left ambiguous by the Mind Screw. A much straighter example is in Rebuild of Evangelion.
- This theory implies that Gendo believes Unit 01 hates him. Unit 01, the one with the soul of his dead wife, Shinji's mother. To be fair, it's not an entirely unreasonable belief.
- Some fans of Ranma ˝ might argue that Genma Saotome is one of these who hasn't gotten around to the "big reveal yet", claiming that his various "mistakes" (which include getting his son a Gender Bender Curse while under a Seppuku contract binding him to be a paragon of manliness and trapping him as part of a Love Dodecahedron) are actually very (very) tough love training exercises intended to teach Ranma more cerebral skills. Many more fans, however, would claim that Genma is just a short-sighted, impatient, impulsive, greedy nitwit of a Sink-or-Swim Mentor who just so happens to have a student that's learned to thrive on Training from Hell and is a born prodigy at Martial Arts and Crafts.
- Itachi Uchiha is/was apparently one for Sasuke Uchiha and Naruto Uzumaki himself in Naruto. He made Sasuke hate him so much that he would spend his entire life training to get strong enough to kill him, and upon his death transferred his strongest techniques to him to protect him from Madara. His methods were a little harsher than most of the examples on this page, but he got the job done...
- Too bad what Sasuke decided to do with this power, really. As for Naruto, it is still unknown.
- Things didn't go quite as planned with Naruto either. Turns out Itachi had entrusted him with an emergency genjutsu that would stop Sasuke in the event he attacked Konoha. It ended up being inadvertently used instead to free a revived Itachi from Kabuto's control. At least Itachi came clean about his intentions after that, though.
- The 'Lost Episode' of Love Hina reveals that Mokoto's older sister uses this: Initially, she appears to be downright antagonistic and unreasonable, but towards the end it's revealed that she's really just doing it to force Mokoto to grow stronger.
- This is a near dead-accurate description of Tsuruko's introduction in the manga, although she did have a right to be irritated with the kid.
- In Soul Eater Dr. Stein is originally posed as a villain who resurrected their teacher, Sid, for experimentation. By the end its all made clear that the plot is part of a remedial lesson.
- YuYu Hakusho: Hiei, a Noble Demon who tries to keep his true loyalties ambiguous, has a tendency to greet Yusuke by randomly attacking him - to test how strong Yusuke has become. Since Hiei was originally recruited into Team Urameshi through a forced Defeat Means Friendship, the first few times he does this Yusuke can't quite be sure he isn't actually trying to kill him.
- A less benevolent example is Toguro, who has an obsession with making Yusuke stronger in their fights because he wants an opponent against whom he can use 100% of his power. He goes so far as to make Yusuke believe he has killed Yusuke's best friend so that Yusuke's grief and rage will make him fight harder.
- Genkai set up three Territory Masters to seemingly attack his friends, in the hope that they'd learn how to deal with Sensui's Seven.
- In Cardcaptor Sakura it's a bit more complex because of Sakura's reaction. The basic trope is there: Eriol is a good guy and a mentor figure, but he creates trouble so Sakura will put her own magic on the Clow Cards (the Cards would die otherwise). On the other hand, Sakura has no idea that he is the one behind this, and treats him as just another of her friends.
- It's possible that Bartholomew Kuma in One Piece may be this and not as Lawful Neutral as he lead you to believe. It wasn't so much that he spared the Straw Hats, but his next encounter with them, which wasn't too long after their first battle with them, he teleported all of them to different islands where they could learn and/or improve their skills.
- Confirmed in chapter 591.
- Ovan from .hack Conglomerate is a Stealth Mentor of sorts to Haseo. All his actions in the story are directed at making Haseo stronger than himself so that Haseo can kill him. No Ovan isn't really The Atoner but his death would really set many things right. And he knows it. Too bad he is virtually unkillable... and that's where Haseo joins the game (pun unintended).
- Just a side note, Ovan was a straight up mentor for Haseo before their mutual (and very close) friend, Shino, fell into a coma.
- Bleach: As an introduction to the Bount arc, three modsouls torment the main cast. They were constructed by Urahara to prepare the team for the appearance of the Bount.
- Gin Ichimaru, too, though he wasn't intentionally trying to teach Ichigo. He only viewed Ichigo as his "successor" to defeat Aizen when he's about to die, way after he gave Ichigo that TheReasonYouSuckSpeech. Still, the speech helped Ichigo identify his shortcomings.
- G Gundam: Master Asia is a very fitting example, Scharz Bruder probably qualifies as well, though he is hardly an antagonist most of the time.
- In the 2003 Astro Boy anime, Mad Scientist Dr. Tenma creates a series of ever-stronger robots to push his estranged "son" to his physical and ethical limits, in order to make Astro into a worthy ruler for robot-kind.
- Scavenger takes this role in Transformers Armada: while undercover among the Decepticons, he puts on a big show of taunting Hot Shot for the latter's lack of skill. This turns out to be a way to sneak him some combat tips.
- Amnael/Professor Daitokuji acts this way to Judai in Yu-Gi-Oh! GX, dueling him to test his skill and make sure he's ready for the final battle against Kagemaru. In the dub, Yubel also acts this way to Jaden (in her/his/its own twisted way), believing Jaden tormented Yubel to make her/him/it stronger and doing the same to him. Compared to Amnael, Yubel's mentorship has much more dramatic consequences.
- Antinomy is this towards Yusei in Yu-Gi-Oh! 5Ds, acting like he's on Z-One's side so that he could duel Yusei and teach him the Delta Accel Synchro technique required to beat Z-One.
- Meta Knight in the Kirby anime counted as this early on (before he revealed himself to be good, of course), and was only working for King Dedede to stop the monsters ordered from Nightmare Enterprises/Holy Nightmare Company while keeping on the king's good side. Once Kirby came into the picture, Meta Knight also ended up training him. Of course, King Dedede was so stupid he didn't figure it out, even after The Reveal.
- Shina Dark has the rare protagonist Exoda acting like this to the entire citizens of Shina Dark. The only one however who could see what he really was trying to do is his butler.
- S-cry-ed features a deathmatch near the end of the series between Ryuho and Jigmar. When he loses, Jigmar confesses that he only fought in order to make Ryuho realize his full potential.
- A rather dark mentoring in Hunter × Hunter for Gon and Killua at the hands of Combat Sadomasochist and Evil Clown Hisoka, who does whatever he can to drive and move Gon to become even stronger, with the ultimate goal of waiting for him to become just as strong as he his, so he can fully enjoy killing him. To make this clear how terrible this will be Gon fighting him right now, when he's extremely weak, gives Hisoka boners.
- Satsuki Kiryuin of Kill la Kill forces the protagonist, Ryuko, to fight harder and harder battles with the promise that she'll reveal the full details of Ryuko's father's death should Ryuko manage to defeat all of Satsuki's minions and Satsuki herself. Episode 18 reveals that this was all to make Ryuko into a powerful ally against Life-Fibers. While also weeding out the weaklings of her own forces and revealing the weaknesses of the Elite Four's combat uniforms so they could be strengthened
- Kamina of Tengen Toppa Gurren Lagann. Most of his Hot-Blooded Idiot Hero moments are done to encourage Simon to man up.
- This is allegedly Zoom (the second Reverse Flash)'s modus operandi. He claims that he wants to make the Flash stronger. Mostly he just goes around killing people — which is, as luck would have it, exactly what his philosophy calls for. Zoom wants to, as he would put it, "make Walllllly abetterhero thrrrrough tragedyyyy", or by forcing him to deal with tragedy.
- Mr. Mxyzptlk, reality warping enemy of Superman, is sometimes implied to be one of these, Depending on the Writer.
- Mr. Miyagi's training in The Karate Kid has been moved to the discussion section; don't think we haven't thought of it.
- The Joker in The Dark Knight claims to be this to Gotham and more specifically, to Harvey Dent. But then again, he is The Joker.
- Ryan Bingham (George Clooney) in Up in the Air seems to be the hero (or antihero) but he is in fact the mentor to the actual hero, Natalie Keener (Anna Kendrick).
- Jigsaw from the Saw movies sees himself as this, more so for some individuals than others. It almost never works, and, except in some cases, he doesn't feel any remorse or disappointment when they fail and die.
- In the intro sequence for Indiana Jones and the Last Crusade, Fedora starts out as a Worthy Opponent for Young Indy, but crosses over into Stealth Mentor territory at the very end. When he sees the Sheriff take the Cross of Coronado and place it in the hands of Fedora's boss, Panama Hat, the other cronies whoop with victory, but Fedora approaches Indy when the others are gone, and passes him the iconic hat Indy is known for wearing.
Fedora: You lost today, kid. But that doesn't mean you have to like it.
- Mrs. Lorelei Granger, the strict teacher in the novel Frindle.
- In the Harry Potter series, Severus Snape displays elements of this, hating Harry but ultimately being an effective teacher. Snape taught Harry how to duel and Expelliarmus and the spell he's "most famous for", saved Harry countless times and inadvertently gave him the poison lesson that eventually saved Ron's life.
- Also (Sort of) inverted with the fake Mad-Eye Moody in Goblet of Fire.
- In Ender’s Game, Mazer Rackham does this to Ender, with the difference that he fully acknowledges his aim from the beginning in the page quote.
- It's not just Mazer Rackham. Colonel Graff, who is the head of Battle School, uses this as standard operating procedure. He's specifically ordered all the adults in Battle School to do everything they can to make Ender as miserable as possible and never, ever come to his aid - even to save his life.
- Vergere, of the Star Wars Expanded Universe novels, trains Jacen Solo this way, while pretending to be working for the Yuuzhan Vong, setting up Jacen to bring about their downfall… then she turns out to be a Sith.
- Jeb Batchelder of the Maximum Ride series of novels does this so many times (and Double Subverts it almost as often) it's almost become an Overly Long Gag.
- A short story based on Magic: The Gathering featured a wizard who had fought a battle against another for time immemorial. When his opponent surrenders, he finds out that his opponent was his creator and had merely been training him to fight a battle that the creator found too frightening to even contemplate. The story ends with temporary peace having been found with the creator wizard's destruction, but the creation staring out and waiting for the new host to arrive...
- In the earlier Discworld novels, Lord Vetinari was a Stealth Mentor to Sam Vimes, deliberately obstructing Vimes's investigations to make Vimes angry enough to try harder. He stopped after accidentally going too far one time.
- In Logan's Run, the Sandman who has been tracking Logan and Jessica through their run turns out to be Ballard, the man who's "lived a double lifetime" and shuttles those who can survive away from Earth to Sanctuary.
Live Action TV
- Brooklyn Nine-Nine has Captain Holt challenging the goofy Detective Jake Peralta with bets to achieve certain tasks like stealing Holt's watch. When Peralta wins, it's with the help of his team and Holt is always happy because getting Jake to work in a team has been his focus since his first day in command.
- Heroes has a literal stealth mentor: Claude, who teaches Peter how to fully use his power copying ability, has the power of invisibility. And whacking Peter with a broomstick, which is a power many fans wish they had.
- Chuck: Bryce Larkin? Maybe
- Q in Star Trek: The Next Generation, at least according to the last episode.
- Also in the episode "Tapestry"
- Mahou Sentai Magiranger has The Dragon Wolzard do this subconsciously. Turns out he's actually the Magirangers' presumed-dead father gone Brainwashed and Crazy, and his suppressed good side is what forces him to act as a mentor to the Magirangers even as he tries to kill them.
- In Supernatural, the Yellow-Eyed Demon reveals that he has been manipulating Sam's life since he was an infant to make him strong enough to be a vessel for Lucifer, and the Trickster also tries to teach Sam and Dean that they must play the roles assigned to them for the apocalypse.
- John Bradshaw Layfield was a Real Life Example for The Miz. He intentionally bullied the Miz to see whether he had what it took to stick it out in the profession.
- The musical The Fantasticks has the romantic version.
- inFamous: As it would turn out, big bad Kessler was actually Cole, who travelled back in time to prepare his younger self to fight an even worse villain in the future, he does this by destroying his own home city, killing the younger version of his own wife/Cole's girlfriend, and making Cole fight several post-apocalyptic factions.
- "Dr. Polito/SHODAN from System Shock 2, who pretty much uses you to destroy an alien race that's infected the ship.
- Dimentio in Super Paper Mario. His early monologues and actions reveal that he is trying to secretly help Mario and the other heroes become stronger in order to defeat Big Bad Count Bleck. His motives, however, are less than pleasant. (Unfortunately, this is undermined by the same scene in which he pulls The (fake) Reveal on the heroes. After explaining his intent to defeat Bleck, he asks them for their help. Agreeing repeatedly results in a Nonstandard Game Over. Oops.)
- That's less of an undermining than it seems. Before and during his request the game drops a few blatant hints (and then, I believe, outright says, since the game lays a lampshade on everything) that he wants to kill Bleck to follow his own plans or world domination, so it's less that the game ruins the Reveal more that it we pretty figured it out (or at least realized he couldn't be trusted) earlier and were waiting for it to be fully explained.
- This is ProtoMan's MO in the original Mega Man games. In Mega Man 7 he even gives Mega Man his Proto Shield if he beats him, and admits that his brother has nothing left to learn.
- Disgaea: Hour of Darkness: Mid-Boss! Or, rather, King Krichevoshky.
- In Dissidia: Final Fantasy, Golbez is given this role, because it would be extremely awkward if after all that happened in his original game about him making peace with Cecil in the end of the game (as well as being revealed as his brother), he'd willingly turn his back and smack Cecil around For the Evulz. He's also the only villain who has a different 'death' cutscene, in which he doesn't vanish with dark energy, but just retreats.
- Nero from My World, My Way is a mentor-in-secret to the game's Spoiled Brat protagonist. The player can even choose what type of "help" he gives her at the end of each level (usually in the form of a quickie boss battle).
- In the first Super Robot Wars Original Generation game, pretty much every villain is a Stealth Mentor. In particular, Sanger Zonvolt is particularly unsubtle that this is his plan, to the extent that none of his teammates ever really think he's betrayed them.
- Ingram is another particularly interesting example, in that he actually begins as a mentor character before betraying the party and revealing that he only helped train the heroes so that they'd be more useful when they were brainwashed and integrated into the Aerogaters' army. He even admits that he's continuing to train them by being their enemy. Of course, he's actually counting on them winning.
- Waka from Ōkami.
- This is pretty much Kratos's main motive in Tales of Symphonia. And, to a lesser extent, Yuan's (although both have other reasons for acting the antagonist).
- In Lunar: Eternal Blue, Ghaleon plays this role. He's unable to directly oppose the Big Bad himself because he died 1000 years earlier, when he was the Big Bad of the first game of the series. Zophar's magic restored him to life to act as his Dragon, and Zophar can withdraw that magic at any time he chooses, instantly killing Ghaleon. Thus, his only option is to go along with Zophar's plans while providing enough covert training to the heroes that they can defeat his new boss. Once the heroes figure out what he's up to, he admits it, since they're now strong enough, happily fading away to join his long-dead best friend Dyne in death.
- Grahf in Xenogears powered up lots of bosses and had them fight you in order to strengthen Fei up, but its averted when you discover that he was only making Fei strong enough so it could be worth taking his body to use for himself since Fei was his reincarnation.
- Albedo in Xenosaga put Jr. (aka Rubedo) through all sorts of hell in order to force him to deal with and resolve his emotional issues and mend their tortured relationship. Though by mend, Albedo meant "provoke Jr. into killing him", since Albedo is otherwise immortal and Jr. is his only anti-existence. He basically spends the majority of Episodes I & II teaching Jr. exactly how to kill him, then prodding into a place where he's mentally-ready to kill him. And then with his dying breath he pretty much tells Jr. to go use what he's taught him against the real bad guys. Ah, brotherly love.
- In Castlevania: Lords of Shadow the Old God Pan, after aiding you throughout the game suddenly attacks you at the gates of the Land of the Dead. Throughout the battle he tests Gabriel's prowess and shows him the proper way to fight against another wielder of Light and Shadow Magic. All so that Gabriel will be prepared to face the true Big Bad Satan.
- Although his role varies from game to game, Meta Knight is sometimes implied to be this to Kirby - most notably in Kirby's Adventure, where he shows up to toss Kirby invincibility lollipops about as often as he sends his underlings to attack him.
- In Westwood Studio's 1997 game based on the film Blade Runner, Graf acts as one to the protagonist Ray McCoy.
- Played with in Radiant Historia. Heiss thinks he's doing this, but he didn't count on his protege disagreeing with him once he revealed his real motives and continuing to oppose his plans.
- Devil Survivor: Gigolo, also known as Loki, takes on this role. He explains the situation with the Bels, tells you about the Devil's Fuge (indirectly saving your life) and explains the different paths and their outcomes near the end of the game. And while he pretends everything he does is because it amuses him, he gives the Player Character one hell of a What the Hell, Hero? if you decide to listen to Yuzu and run away from your responsibilities, disregarding all his good advice in the process. The fact that you can fuse him after you defeat him can be interpreted as a his way of giving you even more help to not screw things up in your New Game+.
- XCOM: Enemy Unknown: The Uber-Ethereal reveals that the entire alien invasion was essentially a Training from Hell, preparing humanity to combat something even worse.
- Arguably, Archer from Fate/stay night is this to Shirou — in the anime at least, and in the visual novel. Even though he REALLY is intent on killing him so he won't repeat his own mistakes, he DOES give pretty helpful advice to him in the form of spiteful comments, and ultimately helps Shirou awaken his powers. No best stealth mentor than your aloof Future Badass self. It also should be noted that in one scenarios, he discards his personal vendetta in face of a greater threat, and because at this point Shirou will most likely never, ever, turn into Archer.
- Beatrice turns out to be this for Battler in Umineko no Naku Koro ni, despite spending the first half of the series as a sadistic Troll. It was all an act; she wanted Battler to win the game they were playing, but unfortunately he doesn't realize this until she's dead.
- Kyousuke turns out to be a non-violent version of this in Little Busters!: his actions in preventing Riki from saving Rin in her route, even after Riki proves what an awful effect it's having on her well-being, turn out to be part of a plan to make Riki and Rin strong enough to take care of themselves after his death. In fact, these sorts of tests are scattered all through the game and form the reasons for the girls' routes, too. Though Kyousuke is much, much more benign than most examples in that none of his tests left Riki or Rin at risk of physical danger, the terrible happenings of Rin's route were a result of his plans backfiring and he's genuinely disturbed by them, and his tests weren't just general bad stuff that Riki needed to overcome but clearly focused around a goal that the game goes out of its way to show is very, very necessary.
- In Sparkling Generation Valkyrie Yuuki, Most of the attacking creatures turned out to have been sent by Odin as tests.
- Vriska in Homestuck uses this justification to explain some of her eviller acts, like giving the main antagonist the powers of a god just so John, her student, would have to become stronger to beat him. Deconstructed in that it's shown to be the egotistical madness that it was, and none of the other characters approve of her actions.
- Troll Blackrom (a mating relationship based on hatred instead of love) seems to sometimes contain elements of this.
- Scavenger in Transformers Armada takes this role for a while. During which he helps the Decepticons get their hands on a superweapon (and even makes sure Megatron will use it personally!), which is probably the only reason they believed he was on their side, given that his behavior towards Hot Shot would be downright bizarre if he wasn't secretly an Autobot.
- It was also pretty cleverly done in terms of the character's physical design. In the G1 series, Scavenger was a Decepticon and transformed into a green and purple construction vehicle. In Armada, Scavenger was a (fake) Decepticon and transformed into a green and purple construction vehicle. The Genre Savvy denizens of the other side of the fourth wall would, of course, jump to the conclusion that he was a Decepticon in homage to the G1 character.
- Chase Young in Xiaolin Showdown — but he's trying to convert Omi to evil, so he's not a Reverse Mole.
- Proto Man in the Mega Man cartoon might be considered one at few times but it's highly debatable (maybe if it would have been finished one could judge reliably).
- Discord of all characters acted like one in the Season 4 premiere of My Little Pony: Friendship Is Magic. Whether he was just dicking Twilight Sparkle around for his own amusement or legitimately trying to help is up in the air, but he definitely did tell her exactly what she needed to hear to succeed.
- In security parlance, a Red Team is a group that launches fake attacks against various assets in order to gauge responses and test security holes. What puts them in this trope is that the attacked group doesn't know that it's a fake attack until it's over (just as they would in real life).