Until I'm sure that you've been shown
That I can be trusted walking with you alone
The phrase "wolf in sheep's clothing" pertains to a character who disguises themselves as nicer or more harmless than they really are to conceal their true identity, feelings, or motives. Characters that are disguised this way might not necessarily be evil or intend malice, but when their lie is discovered it usually causes at least feelings of betrayal and distrust.
A Super-Trope to Bitch in Sheep's Clothing, where a Jerkass or evil character pretends to be nice to manipulate others, and Beware the Silly Ones where a character appears silly or innocent but is actually more dangerous.
A sister trope to Obfuscating Stupidity, Obfuscating Insanity, Obfuscating Disability, and Crouching Moron, Hidden Badass, all of which also involve presenting themselves as less of a threat in various permutations. Compare with Face of an Angel, Mind of a Demon, where an evil character looks like a good one, but whose appearance is not necessarily an affected disguise, and who is definitely evil rather than simply dangerous. Compare Nice Character, Mean Actor, where an evil character pretends to be a good one. May be a Churchgoing Villain or a Sinister Minister. Contrast Beware the Nice Ones, when the character actually is nice until you push them too far.
A form of Hidden Depths or Beneath the Mask. Often employed by The Mole in The Infiltration. If everyone is putting on a mask they are a Flock of Wolves. When this trope is performed literally, that is Ass in a Lion Skin.
Surprisingly not related to Sheep in Wolf's Clothing, which is when someone is partially turned into a monster but retains enough humanity to work against the monsters.
- Blackbeard in One Piece to Whitebeard's crew.
Jimbei: Ever since he was on old Whitebeard's ship, no one's ever known his true nature.
- Rurouni Kenshin: Saitou's "Fujita Gorou" persona is pleasant, unassuming, and literally forehead-to-the-floor humble. In reality, he's a Good Is Not Nice Jerkass. The interesting thing is that it's not just for his undercover work; that's his civilian identity as well.
- Most of the Homunculi from Fullmetal Alchemist. Special mention goes to Lust and Pride in the 2003 series and Wrath and Pride in the manga, who manage to fool various members of the military and the protagonists.
- In Tokyo Ghoul, ghouls that don't actively shun human society do this out of necessity. A predator living among their prey, they must work to constantly maintain a normal and harmless persona to avoid being discovered and hunted down by the authorities. Those that go a step further and maintain a human identity are said to be walking a tight-rope, always having to keep their predatory instincts in check and avoid doing anything that could give them away. Sadly, it doesn't matter if their kindness is genuine or not. After all, ghouls aren't really people, right?
- Literally with Charmy Pappitson in Black Clover. When she awakens her Dwarven heritage, the giant sheep she normally creates using Cotton Magic sheds its skin to reveal a gigantic hungry wolf. It signifies her dangerous side and voracious appetite, gaining Food Magic to become a Magic Eater.
- In Heavy Object, the Scarlet Princess appears to be a luxury cruise liner, the perfect target for Ruthless Modern Pirates. It's actually a disguised Legitimacy Kingdom cruiser which specializes in counter-piracy operations.
- Wonder Woman:
- Sensation Comics:
- Joe Bamko tries to pose as a caring if down on his luck family man, who has taken in his widowed sister in law and her kids out of the kindness of his heart, but in reality, he's a gangster and abusive Jerkass and his sister-in-law ends up so worried that he's going to hurt her kids and she won't be able to stop him that she ends up planning to kill him to save her family.
- When she first appears, Byrna is acting as a secretary at the Fair Weather Valley town meeting and is a local well-liked teacher. Then she's revealed as the Blue Snowman that's been terrorizing the town.
- Wonder Woman (1942): Etta runs into a high-level mobster who has kept from being implicated in her group's criminal activity by playing the helpless victim. She is quite annoyed when Etta overhears her ordering her men to carry out insurance fraud.
- Wonder Woman (1987):
- The White Magician, the villain who sabotaged Wondy's attempt to save Natasha in the last arc, has been posing as a hero in place of the missing Wonder Woman but it quickly becomes clear he's murdering people and arranging a media circus to make himself look a hero before the criminals and other unfortunates he's targeting even start their attacks.
- Diana's new friend Donna Milton is a murderer who is inserting herself in Diana's life to help the Big Bad of the arc defeat her. She ends up coming to care for Diana despite her original intent which becomes even more poignant with the later reveal that Donna is Circe.
- Sensation Comics:
- The Ultimates: Henry Pym is a wifebeater, but for everyone else, he has a happy marriage with Jan. Nobody suspected anything until he almost killed her.
- The Far Side did this a few times (being the Trope Namer for Flock of Wolves). Although sometimes, the wolves didn't exactly get it right:
Wolf: Hey, that's a good idea. "Sheep's" clothing. Let's get out of these gorilla suits!
- One Bizarro had a wolf dressed as a sheep confessing to a therapist that he's not wearing it to catch sheep anymore. It's the real him.
- Abraxas (Hrodvitnon): In this MonsterVerse fanfiction, the Mega-Corp Apex Cybernetics are this once they approach Monarch. They freely show Monarch blueprints for vehicles and suits designed to enable human soldiers to survive amidst the Titans and they suggest that together Apex and Monarch can put humanity on the Titans' power level with the aim of aiding Godzilla and his allies. That being said, the ending shows Apex have secretly illegally bought trafficked Zmeyevich for their own ambitious purposes.
- All Mixed Up!: Mariana Mag pretends to be harmless and treats Odd Squad with nothing but kindness right when she moves to town. However, it's all a facade as she's eventually revealed to be the Big Bad of the story who targets and attacks Precinct 13579's agents left and right. Otto even calls her out on her niceness during the climactic battle between them.
Otto: I mean, what could you have against Odd Squad anyway, if you were so nice to us before?Mariana Mag: Nice? Ha! That wasn't being nice. That was acting, flattery, and toleration.
- Blood and Revolution: Saitou, as with his canon counterpart, takes on unassuming and pleasant personae to deal with politics and go undercover. Fujita Gorou was probably the longest-running (as it was his civilian persona) but Ichinose Denpachi deserves special notice for changing his personal pronoun consistently to 'boku'.
- The Mountain and the Wolf: The giant man who goes by the Wolf is openly a murderous servant of Chaos, but he's so crass and unsubtle in his methods no one can imagine him actually being serious, seeing him as The Friend Nobody Likes who can be occasionally useful but not enough to willingly spend time around him (and from what we see of his real personality when there's no one around to require the mask, it's Not an Act). Thus when Daenerys is killed by his hand, it's more shocking that he did so when there was no visible gain for him than his suddenly turning evil.
- The animated version of The Three Little Pigs had the The Big Bad Wolf attempt to enter the second pig's house by pretending to be a baby sheep. The two little pigs don't buy it.
Wolf: I'm a poor little sheep, with no place to sleep. Please open the door, and let me in!
Pigs: Not by the hair of our chinny-chin-chin! You can't fool us with that old sheepskin!
- The expression is referenced in Zootopia in the form of a Visual Pun, where near the end Chief Bogo assigns a trio of officers to undercover, and the wolf of the group puts on a disturbingly convincing sheep costume. This is also exploited by the main villain, who is literally a sheep.
- Hoodwinked! also does this with a Visual Pun. Namely, the Wolf and Twitchy disguise themselves in sheepskins to infiltrate a flock and talk to a sheep that is one of the Wolf's best sources of information.
- Pixar likes this kind of villain. Although not all of their villains are hiding malicious intentions behind an affable face (some are Card Carrying Villains and other films just have No Antagonist), if a charismatic, affable man enters the scene, you have probably seen the introduction of the film's Big Bad.
- Coherence: Four couples at a dinner party realise that something weird is going on with the house down the road, and Mike shouts that he's going to kill the people in it. After it becomes apparent that the house is their house in multiple alternate realities, it's one of the other, calmer people who decides to Kill and Replace their double in a happier reality.
- Inverted in the Darkest Powers series by Derek Souza. He's standoffish and can be utterly tactless at times, but he's also a genuinely good person who still carries the guilt of the one time he accidentally hurt someone in self-defense. However, everyone, including a family friend who's known him from childhood, assumes he's a violent thug pretending to be harmless. The humans fear him because he's over six feet tall and 220 pounds of solid muscle at the age of 16, and the supernaturals fear him because he's a werewolf. In short: Derek is usually assumed to be a wolf in sheep's clothing when, metaphorically, the opposite is true.
- In Dragon Bones, there is an individual who pretends to be a harmless escaped slave, while she's actually magically enslaved and working for her master all the time. She is actually quite a nasty person, but pretends to be nice.
- A Song of Ice and Fire, (being an entire series worth of Doorstopper sized Gambit Pileups), has no shortage of these, but one character who stands out for this trope is Petyr "Littlefinger" Baelish. He's an interesting example because he doesn't pretend to be nice (his affable persona is a deliberately Paper-Thin Disguise); the real pretence is that he acts like a Smug Snake when he is in fact a full-fledged Chessmaster, so still fits the bill of pretending to be much less dangerous than he really is.
- Famously in Little Red Riding Hood, The Big Bad Wolf tricks the title character by dressing in her grandmother's nightgown. "My, grandmother, what big teeth you have!"
- In River of Teeth, Archie, a cunning thief and conwoman, likes to disguise herself as a proper lady because nobody ever suspects a fat woman in a custom-made dress to have such nimble fingers.
- Geryon, a monster from The Divine Comedy who guards Eighth Circle of Hell, is the biological manifestation of fraud. It may have the face of a beautiful man, but behind that face is the body of a massive winged serpent with a tail ripe with venom.
- Granny Weatherwax from the Discworld series subverts this when she disguises herself as a harmless old apple seller. Not only by being a heroic character but also by the fact that nobody is fooled, theyre all just too scared of her to argue.
- Warrior Cats: In Tigerclaw's Fury and Blackfoot's Reckoning, Tigerclaw offers to help ShadowClan during their sickness. Blackfoot is inspired by Tigerclaw's selflessness and willingness to help cats of another Clan, but Tigerclaw doesn't actually care about the welfare of the ShadowClan cats; he's just doing it in the hope that ShadowClan will accept him as their new leader.
- Invoked if not actually used by the characters themselves in Airwolf. The design concept was a supersonic attack helicopter whose weapons were hidden in pods so it could pass as a fancy executive transport. The flight suits' shoulder patches even featured a Wolf In Sheep's Clothing design.
- The Frankenstein Chronicles: Lord Daniel Hervey, who initially comes off as a kindly physician concerned that the Anatomy Act may outlaw his practice (which is charitable for the poor) and implied to share his sister's religious objections as well. However, it turns out that he is a multiple murderer who experiments on raising the dead with kidnapped children. Oh, and he's also an atheist.
- Daredevil (2015): This trope aptly describes Marci Stahl. Marci is the only white-collar attorney we've seen across Landman & Zack or Hogarth Chao & Benowitz who actually shows compassion and selflessness towards others and isn't willingly engaging in illegal activity, and puts up a selfish front because she doesn't want to be seen as weak.
- Logan's Run: In "The Judas Goat", the Sandman Joseph 8 assumes the identity of the Runner Hal 14, an acquaintance of Jessica and a fellow member of La Résistance, using Magic Plastic Surgery. The Council of Elders order him to bring Logan and Jessica back to the City of Domes so that examples can be made of them. The faux Hal tells the two Runners that there is a full-scale rebellion brewing in the City and that their presence will inspire hundreds to rise up against the regime.
- Supernatural: When the Prince of Hell Dagon comes to Kelly's and her unborn Nephilim baby's aid, the former at first presents herself as reassuring and supportive, but she drops this fairly fast once she has Kelly in her clutches and playing nice no longer benefits her.
- Survivor: This strategy is widely agreed to be among the best to use if you want to win the game. Appearing non-threatening ensures that people won't attempt to vote you out while also making it seem like you aren't the one running the game from behind the scenes. Granted, it's also among the hardest to get the Jury to see, so you better be really good at explaining your game if you want to win.
- Why Women Kill: Jade seems like a nice, ordinary woman at first (if an ethical slut), but she's later shown to be a manipulative serial killer.
- Jurassic Park:
- Jurassic Park: Nedry is approached by a friendly-looking dinosaur that almost seems like the dodo of dinos. Then it extends its frill and is revealed to be the Dilophosaurus — cue Nedry's Cruel and Unusual Death.
- Jurassic World: Camp Cretaceous: Mitch and his wife Tiffany at first present themselves to the main cast as friendly eco-tourists, but are in actuality big-game poachers.
- In the song "Little Red Riding Hood" by Sam the Sham and the Pharaohs, the singer (in the role of the wolf) mentions wearing a "sheep suit" to win the trust of the girl. It concludes with the wolf howling and then correcting himself: "I mean baaaaaaa! Baaaa!"
- The aptly named song "Wolf in Sheep's Clothing" by Set it Off describes such a character, although by the Tv Tropes definition it actually seems to refer to a Bitch in Sheep's Clothing.
- The Trope Namer is a sermon by Jesus recorded in the Christian Bible: "Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves" (Gospel of Matthew, 7:15 — King James Version). The sermon then suggests that their true nature will be revealed by their actions (by their fruits shall ye know them, verse 16).
- The Achilleid: Ulysses and Diomedes pretend to arrive in Scyros in search of love, but in reality are just attempting to trick Achilles into joining the Trojan War. The narration explicitly compares them to wolves tricking a shepherd's guard-dog into letting them prey on its master's flock.
- Dark Souls: Petrus of Thorouland quotes this word-by-word if you get killed by him when you attempted to avenge Reah.
- Sheep, Dog 'n' Wolf: Done literally — the player character (Ralph Wolf) can acquire and wear a sheep costume, and uses it to steal sheep.
- Castlevania 64: Renon openly introduces himself as a demon, but reassures you that since one "needs gold even in Hell these days" that he'd rather exploit the niche market of adventurers who need supplies in the titular castle. Throughout the game, he is polite, gentlemanly, and has a real habit of leaving the contract necessary to summon him wherever you need it. While it's possible to only see this side of him, he neglects to tell you about the contract's fine print: spend more than $30,000 and he owns your soul. If this happens he goes full One-Winged Angel and becomes a rather gruelling Bonus Boss intent on taking what is now his.
- Red Dead Redemption II: Leopald Strauss looks like a harmless old grandfather but is in truth an Evil Debt Collector who loans money out to desperate folks and then doesn't care if Arthur has to literally beat the money back out of them. That said, even after being kicked out of the gang by Arthur as not even the rest of the gang can stomach his practices anymore, Strauss died under the torture of the Pinkertons and never spoke a single word of the gang's secrets.
- Wadanohara: The traitor is eventually revealed to be a shark in an unassuming dolphin's clothing.
- Kevin & Kell: Played with in multiple fashions, particularly in the relationship between Corrie (a sheep note ) and Bruno (a wolf). Corrie spent a period as a sheep in wolf's clothing since Bruno's best friend Rudy was opposed to carnivore/herbivore relationships.
- Zero Percent Discount has such a wolf but he gets killed by a Threatening Shark.
- The early carnivorous circuagodonts of the Pangaeacene would sometimes use their resemblance to their herbivorous cousins to their advantage by pretending to be herbivores themselves which would cause the plant-eaters to lower their guard and allow their clanmates to flank and ambush the herd and score multiple kills. However, this was only something that would work for a short time as after the first deception the herbivorous circuagodonts would become wise to this trick. There's also the fact that, as the carnivores become better adapted to a predatory lifestyle, their appearance will diverge further from the herbivores.
- Early gravediggers often traveled alongside their intended prey for long periods of time, letting them become used to them; because they didn't act aggressively towards them, the animals they stalked simply never associated the slow, small, plodding creatures with danger and barely even acknowledged their presence. This allowed the gravediggers to memorize their habitual routes, and thus to dig their traps in locations where they knew they would pass over soon.
- Juvenile piranhas insinuate themselves into schools of other fishes, finding safety from larger predators in the crowd. They also feed off their non-piranha schoolmates, biting off pieces of the fins of unsuspecting companions.
- Most fish would avoid attacking a Cleaner Wrasse and instead allow it eat their parasites. The False Cleaner Wrasse's appearance resembles the real thing, allowing it to stay relatively safe while biting off pieces of fins from victims expecting a cleaning.
- Some types of livestock-guarding dog, such as the Great Pyrenees or Kuvasz, have been bred to look like sheep so they won't scare the herds they're supposed to be protecting. This also hides them from wolves, who get a surprise when the dog interferes with their hunting.
- In the United States Air Force, there is an entire Fighter Wing that earned its nickname from an operation based on this concept. During The Vietnam War, North Vietnamese MiGs were pouncing on American F-105 Thunderchiefs, older, clumsier fighters that had been relegated to doing bombing missions. The 8th Tactical Fighter Wing, under the leadership of Robin "The Wolf" Olds, launched an operation where F-4 Phantoms would fly the same routes as the F-105s, flying close together so that two Phantoms would resemble a single Thunderchief on the North Vietnamese pilots' radar. When the unwary North Vietnamese pilots closed to engage what they thought were vulnerable bombers, they realized, often too late, that they had blundered into an ambush. Ever since then, the 8th TFW (now simply known as the 8th Fighter Wing) has been called "The Wolfpack."
- "Auxiliary cruisers" that is merchant vessels with concealed armament used for one of two things:
- Q-ships intended to lure enemy submarines into attacking them while surfaced. Theoretically also useful against small surface vessels, but the one time a Q-ship got involved in a scuffle with a surface vessel it's opponent was a battleship.
- On the flip side there are commerce raiders, ex-merchant ships intended to surprise and capture/destroy other merchant ships with their hidden armament. In one case one of these (Kormoran) managed to lure a suspicious cruiser (Sydney) Into getting so close the former was able to surprise the late into sinking her with all hands (Kormoran latter sank as well but most of the crew escaped onto lifeboats and were later rescued).
- "Sleeper" are high-powered cars with restrained styling, usually using the bodywork of a normal vehicle. The 2003 Mercury Marauder was a modern four-door 300hp+ muscle car, that shared the same body as a run-of-the-mill Ford Crown Victoria - a Boring, but Practical police cruiser and taxi - the only thing identifying it as a sports car being the dual exhaust. Tuning can turn even the most unassuming cars into speed monsters, such as this Honda Insight blowing the doors of a V8 Camaro.
- Israeli Prime Minister Benjamin Netanyahu has used this analogy word-for-word to describe openly moderate Iranian President Hassan Rouhani (claiming his predecessor, the far-more conservative Mahmoud Ahmadinejad, was a blatant "wolf in wolf's clothing").
- The Plains tribes and possibly other Prehistoric hunters would approach herds on all fours and covered in deer, bison, or wolf skins, in order to keep the animals from recognizing them as human and fleeing earlier.