- 7eventy 5ive: The killer in is both crazy and uses an axe to kill people.
- Alien³: Walter Golic is by far the craziest convict. Even though he didn't kill the two inmates that the others suspect him of having murdered (the Alien did it), he is still a homicidal nutcase. When he's contained in the infirmary in a straight jacket, he turns to Ripley and suddenly reminisces about a few women he knew back home. Then he looks her in the eye and says that she's gonna die too.
- American Psycho: Patrick Bateman is a successful stockbroker by day, serial killer by night. Maybe.
- The Avengers: Loki, the main villain, announces his arrival on Earth by killing a bunch of S.H.I.E.L.D. agents with the evil spear of doom that Thanos gave him. He proceeds to kill many more people over the course of the movie. In addition to his violent behavior, though, it's a sign that someone has to be particularly mentally unstable when Bruce Banner, a man with a super-powered alter ego and serious anger-management issues, describes him by saying that his mind is a bag of cats and you can smell the crazy on him.
- Ultron from Avengers: Age of Ultron is pretty ax crazy, too. His behavior, if possible, is even more erratic than Loki's, who may have been acting on outright delusions at some points. This is especially true after Ultron decides to give up trying to improve humanity, and instead tries to destroy it.
- Babes in Toyland: Played for laughs:
Barnaby: Item 1: Kidnap Tom.
Roderigo: * Makes throat-slitting gesture*
Gorganzolo: No, just kidnap him.
Barnaby: Item 2: Throw him in the sea.
Roderigo: * Repeats gesture*
Gorganzolo: No, just throw him in the sea!
Barnaby: Item 3: Steal the sheep.
Roderigo: * Stabbing motions*
Barnaby: No, just steal them!
- Bad Boys: Fouchet's plan seemed to involve killing everyone he encountered. His first reaction when the cops arrive at the end? Shoot his partner.
Joker: "Guns are too quick. You can't savor all the... little emotions. In... you see, in their last moments, people show you who they really are. So in a way, I know your friends better than you ever did. Would you like to know which of them were cowards?"
- Mr. Zsasz from Batman Begins. Though he's pretty quiet during his small amount of screen time, the tie-in video game displays him as very much so. It is hinted in the movie as well, since he has some of the tally mark scars he cuts on himself every time he kills someone in the comics. Also, he comes at Rachel and a young boy with a knife in the Narrows when the Narrows are flooded with fear gas.
- The Joker from The Dark Knight is a sadistic, homicidal Mad Bomber; and a Cloudcuckoolander with a highly warped viewpoint of human nature. When he's searched by the police, they find a whole lot of things that are already knives, and all his actions are motivated by an unbridled taste for doing evil.
- Battle Royale: Kazuo Kiriyama shoots down several unarmed girls, grabs their megaphone and puts it to one girl's mouth so everyone within hearing distance can hear the sounds she makes as she dies.
- Caligula: The title charcter. Tiberius also gets a couple of moments.
Tiberius: Do you think this boy has drunk enough wine?Caligula: I think he's drunk enough, Lord.Tiberius: So do I! *kills drunk man* Now he is happy.
- In Kathryn Bigelow's Blue Steel, Eugene Hunt is a stockbroker and by all outward appearances a normal person but who under the cover of night goes on a killing rampage after he acquires a .44 Magnum from a robber whom the protagonist, rookie cop Megan Turner, shoots early in the film. By the final act of the film he has gone completely ballistic and shoots and kills Megan's friend and later sneaks into her house, strips himself completely naked and brutally rapes her shortly after she has consensual sex with a fellow officer.
- Blue Velvet: Frank Booth is one of the most memorably profane and sadistic psychopaths ever put to film.
- Body Bags: The killer in the first segment is an escaped mental patient who slaughters people because he's either insane or just enjoys murder. Or both.
- Cape Fear: Max Cady (especially De Niro's version) from both versions. He's a serial rapist who will stop at nothing to make the life of the lawyer who failed to prevent him from doing time a living hell.
- Casino: Nicky Santoro might count, despite being an Anti-Villain. Despite having clear restraints, he is still willing to violently beat and torture people if it's needed or he's angered. Though he's based on a real life gangster.
- A Clockwork Orange: Alex DeLarge, an extremely intelligent but absolutely devoid of conscience psychopath, who lives only to commit random acts of, as he calls it, "ultra-violence".
- Cemetery Man. When the Grim Reaper tells you to kill people, you kill people.
- The Crazy Family: In the second half of the movie, Everyone goes Ax-Crazy
- Crimson Peak: Lucille Sharpe killed one of her parents with a cleaver, and one of them with poison, when she was just a teenager. They were horrifically abusive parents, though, so she was sent to an asylum instead of prosecuted for the crimes. However, it's implied that the asylum just made her worse. When she gets out, she becomes a multiple murderer, killing her brother's wives and their remaining family in order to make off with their fortunes. After she kills her brother for falling in love with someone else, though, she loses the last hold on her sanity, and keeps screaming at the main character that she won't stop until one of them is dead while rushing her with a cleaver.
- Dawn of the Dead (1978): Wooley just runs around the apartment building in the beginning of the movie shooting everybody in sight, whether they were zombified or not. He was so out of control, the SWAT had no choice but to kill him.
- Death Warrant:
- The Sandman is a psychotic serial killer who murdered people for fun. Near the climax, he releases all the prisoners from their cells to watch them cause mayhem.
- The two cons who worked together with the warden to kill prisoners and silence anyone who might expose seem to be in it more out of sadism than any profit.
- Demolition Man: Simon Phoenix, who can be described as Heath Ledger's Joker as played by Wesley Snipes. In fact, he's so hell bent on murder and mayhem, that it's the main reason John Spartan detects something fishy is going on with Dr. Cocteau, since Phoenix hesitates to kill him, when he never, never hesitates to kill.
- The Descent: Sarah turns into this over the course of the movie. Differs from many examples in that it wasn't a random attack so much as the Ax Crazy making her act on her motivations. Alternately, the movie purposely left open the possibility that she had imagined the creatures and it was really just her slaughtering all her friends. Which would make her much more Ax Crazy, and throughout the whole movie. Only in the Revised Ending, though. In the original ending, there's an additional scene which shows her about to be killed by the very-much-not-imaginary creatures while hallucinating that she's back with her dead daughter.
- The Devil's Candy: Murderous lunatic Ray, who says Satan is telling him to kill children, because the are the devil's...
- Devil In The Flesh: Debbie is a Yandere who kills numerous people and tries to kill her teacher's wife (she has an intense crush on her teacher).
- Dirty Harry: The Scorpio Killer fits this trope in spades. He's a sadistic Serial Killer who kills his victims at random. He goes so far as to bury a young girl alive and threatens to let her die unless he can talk to Harry. When he meets Harry, he says he's decided to let the girl die anyway and tries to kill Harry.
- Django Unchained: While Calvin Candie is a sadistic sociopath, at first, when we know him, seems polite, calm and sophisticated. However, when he learns what Django really wants to do, he has a severe Villainous Breakdown and shows his true violent and psychotic nature with his hammer.
- D.O.A.: Chester enjoys hurting people. He especially relishes the gutshot, since it kills people nice...and slow.
- Dollars Trilogy:
- A Fistful of Dollars: Ramon Rojo is extremely obsessed with a woman, is widely paranoid, and tortures and kills in cold blood. He is a dangerous psychopath and makes a Slasher Smile during many of their massacres.
- For a Few Dollars More: El Indio is even more unstable than Ramon, Indio is a full-blow insane man, especially when he smokes (presumably) marijuana.
- Dredd: Ma-Ma is a little more subdued than others but her first act in the film is to order three rival dealers skinned alive and thrown off a 200-foot balcony, after giving them a hit of Slo-Mo to slow their perception of time and drag it out even longer. It's even stated that she has an M.O. for maximum violence.
- The Kodak bear in The Edge obsessively stalks Bob and Charles, brutally ripping Stephen to shreds and is determined to do the same to them, despite the fact that there must surely be other game around for him to feats on. Apparently the men getting stranded and consequently wandering into his territory really pissed him off.
- Elysium: Kruger is crazy enough that he uses his goddamn katana to cook food with. What makes him one of the most batshit insane villains yet is his horrifying reputation for being a human-rights violator and for having a very bad habit of blowing people up, going as far as calling an injury that he inflicts on those who get in the way "a flesh wound", before blowing them to chunks. And once he finds out Delacourt's "classified info" was a total system reboot for Elysium, he decides to kill Delacourt and get the data himself to turn Elysium into his personal hell.
- Fatal Attraction: Alex, although she doesn't seem like it at first is this taken Up to Eleven, becoming an extremely deranged version of your typical Stalker With a Crush.
- Friday the 13th: In the first installment, Pamela Voorhees goes on a murderous rampage against the consuelors of Crystal Lake Camp, holding them responsible for the death of her son Jason. Jason himself picks off where she left in the sequels.
- Full Metal Jacket: Pvt. Pyle suffers a massive mental breakdown and becomes this due to the abuse of Sgt. Hartman and the bullying of his fellow recruits. He ends up killing Sgt. Hartman before turning the gun on himself.
- Gamer: Hackman is a mountainous inmate who enjoys killing way, way too much. Lampshaded when Kable notes that he really isn't right in the head when Hackman comes to boast about killing another prisoner.
- G.I. Joe: Retaliation: Firefly, the Mad Bomber and Demolitions Expert of Cobra.
- Godzilla: Okay, he's not human or anything close to it, but Godzilla's adversary Gigan is an excellent exampele. A forty-storey Psycho for Hire, Gigan is best remembered by the fanbase for looking badass, having scythes—and subsequently chainsaws—for hands, and his clear enjoyment in slowly carving chunks off of his opponents. In a series defined by giant monsters stomping all over Japan, Gigan is one of the few who is obviously getting a kick out of it, and his very deliberate sadism makes his sanity rather questionable, even by this franchise's standards. Plus, anyone who puts a buzzsaw in their chest has got to be a lunatic.
- Tommy De Vito is a sadistic mobster liable to open fire at the slightest provocation, irritation, or inconvenience. He also murdered Billy Batts in an extremely brutal way. Pesci had trouble playing the role because he could not understand a character who reacted violently to everything. This was particularly true of the scene where Tommy kills Spider. From Pesci's perspective (or any other sane person for that matter), having someone that you've been ragging on telling you to go fuck yourself was no big deal. He finally decided that Tommy would simply not be able to understand that Jimmy rewarding Spider and asking Tommy if he was going to let Spider get away with it was all meant in jest, instead choosing to see it as a insult.
- Jimmy "The Gent" Conway is a very subtle example. We rarely ever see him lose his cool, and he comes off as a rational individual. Then the corpses of nearly everyone who participated in the Luftansa Heist start popping off everywhere.
- Grosse Pointe Blank: Dan Aykroyd's character Grocer manages to come off as Affably Evil until the climactic firefight, where it becomes immediately obvious that he's batshit insane.
- Halloween: Michael Myers is really a subversion. He is more calm and quiet that crazy, but still has several features of a true Ax Crazy, he's a cold-blooded homicidal maniac without conscience who enjoys killing.
- Inglourious Basterds: Hugo Stiglitz is a lesser, 'heroic' example, having violently stabbed 13 Gestapo officers to death. The Basterds themselves are also this in the same vein as the aforementioned character.
- Hard Boiled: Johnny Wong, the leader of a Hong Kong weapon smuggling ring, is a ruthless gangster with no qualms about gunning down in cold blood anyone who stands in his way, including helpless hospital patients.
- The Hitcher: John Ryder is one of the most chilling and disturbing examples. A completely insane Serial Killer who kills for fun. He will make you think twice before you give a hitch hiker a ride.
- The Hitch-Hiker: Meyers is completely unstable. He has no remorse and thinks that being a real man means being a killer.
- The Hunger Games: Mockingjay Part 1: The Capitol 'hijacks' Peeta into becoming violent and unpredictable.
- In the movie Infini a bio-agent infects a search and rescue crew and turns them all violently insane, driving them to kill each other. Turns out it's trying to find out who among them is the strongest so it can evolve.
- Jack the Giant Slayer: Wicke comes off as just slightly unhinged during a lot of his screen time. Whenever Roderick gives him the cue to either kill someone or that he's going to do it himself, he reacts with glee and excitement, and even when that's not happening, he's usually trembling and/or smiling eagerly about doing whatever it is they're planning to do next.
- James Bond:
- A View to a Kill: Max Zorin is really enjoying himself when he is gunning down his employees near the climax. And by the end of the film, he's completely lost all of his sanity to the point of using a literal ax to try and hack Bond to death, all while cackling like an evil and insane homicidal maniac.
- GoldenEye: Xenia Onatopp is a Psycho for Hire for the Janus Syndicate who actually derives sexual pleasure from the act of killing. Her favourite murder method is asphyxiating men between her Murderous Thighs while having sex, and she practically orgasms when gunning down unarmed technicians at the Severnaya facility.
- Quantum of Solace: Dominic Green becomes this towards the end when James ruins his plans and destroys his entire facility, at which point, he completely snaps and uses an actual axe to try and chop Bond into pieces, all while screaming like a complete lunatic.
- Juice: Bishop, as the film reaches its climax.
- Kill Bill:
- Elle Driver is a venomous, hateful, Rival Turned Evil who distinguishes herself from the other ruthless killers of the Deadly Viper Assassination Squad by being the most evil and malicious member.
- Gogo is simply a violent, sadistic sociopath who, quoting The Bride, "Makes up for her young age with madness."
- Last Action Hero: Ripper, a fairly generic ax-murderer, is one of the antagonists. The fact that he's a hulking, semicoherent clone of every other Ax Crazy slasher on film is surely deliberate, as he's a fictional character from a rather trite series of lowbrow action flicks.
- Lord of War: Andre Baptiste Jr. is known as a cannibal, and he shoots civilians for sport. His father as well, as he callously shoots one of his own men for even looking sideways towards his woman. They're both usually more restrained, though.
- The Loved Ones: Lola. She has Brent kidnapped and tortured because he turned down her offer to go to prom with her, as he already had a girlfriend, and she has a lot of Parental Incest Subtext with her father, who helps her in her schemes. It's also made clear that she's been doing this for a long time and enjoys it.
- Madhouse 2004: Clark Stevens becomes this at the end of the movie .
- Man Bites Dog: Benoit is a completely unpredictable Serial Killer. His crimes are sometimes motivated by money, but they are generally completely random. At his birthday party for example he's ecstatic about trying his presents... and shoots one of the attendees in the head without warning. He then continues enjoying the party like if nothing happened.
- Matilda adds a good dose of Ax Crazy to the Trunchbull in addition to her cruel treatment of her students. The first thing she does when she suspects intruders in her house? She bull-charges from room to room, leaps down from the second floor, bringing down her chandelier in the process, and eventually starts swinging an Olympic hammer around and randomly smashing it into her possessions.
- A Nightmare on Elm Street: Freddy Krueger killed children for fun before he bought it, and then he became a dream-haunting ghost who has even more fun killing teenagers. Bad sense of humor, too.
- The Professional: Detective Norman Stansfield has the habit of murdering families while humming Beethoven, in fits of drug-induced lunacy (though it doesn't help that he is also a death obsessed psychopath). Imagine Alex Delarge if he were a cop.
- The Proposition: Arthur Burns is a well read and very deep Warrior Poet...who just happens to have a penchant for gang-rape and mass murder.
- Rambo: John Rambo himself has shades of it in the first movie. One time, he mistakes a kid out hunting game for one of the officers pursuing him and Rambo has to force himself to let the kid go. Col. Trautman himself lampshades this during the climax where he accuses Rambo of having wanted to initiate a fight from the beginning. And overall, he's a traumatized shell of a man, unable to feel anything in the midst of atrocities.
- Red Eye: Rippner tries to kill Lisa's dad and Lisa and herself during his Villainous Breakdown following Lisa stabbing a pen through his neck.
- Repo! The Genetic Opera has Luigi Largo. He's been described as walking around with a flask and a knife, drinking and stabbing anything that gets in his way, including his own employees. He's also tried to strangle his brother in 'Mark It Up'.
I'm the smartest and the toughest!
I will find a hole and fuck it!
If there ain't one, I will make one!
Luigi don't take shit from no one!
- Reservoir Dogs: Mr. Blonde/Vic Vega, while certainly being the embodiment of cool, is a sadistic monster who nonchalantly murders and tortures innocent people for the hell of it while dancing to catchy tunes on the radio. Let's just say, the scene he is most famous for is a classic case of crossing the Moral Event Horizon.
- Retroactive: Frank is unhinged and homicidal, and doesn't need much prompting to go on a destructive rampage. Discussed when Brain mentions that he thought Frank was obnoxious, but didn't expect him to be an insane psychopath.
- The Rocky Horror Picture Show: Never steal Dr. Frank N Furter's spotlight while he's holding a pickaxe. It may be the last thing you do. Meat loaf, anyone? He can also be pretty intimidating with an electric carving knife.
- A Room For Romeo Brass: Morrell appears to be just a lonely eccentric, but he soon reveals his true colours when he threatens a disabled boy with a knife for a harmless practical joke that made him appear foolish in front of the woman he is obsessively fixated upon, threatens to kill the boy's family, and then threatens to kill the boy's best friend (and brother of the object of his lust) when the woman rejects him. However, compared to several of the others on this list he's an unusually laughable and ultimately rather pathetic example; his attempt to make good on his threats is put in its place when the best friend's estranged father — who hasn't taken any of Morrell's shit throughout the movie — charges in, gives Morrell a good kicking and sends him skulking away with his tail between his legs and the promise that, if the boy's father ever sets eyes on him again, he'll be the one who ends up dead.
- The Salton Sea: Pooh-Bear is both crazy and extremely dangerous. For instance, he nearly castrates the protagonist out of paranoia and because it's amusing to him.
- Scanners II: The New Order: Peter Drak is a telepathic psychopathic murderer whose only joy is killing people.
- Scarface (1983):
- Hector the Toad, who forces Tony to see his friend Angel dismembered with a chainsaw.
- Tony Montana himself is a milder case. Although while his growing addiction to drugs increases, he gets increasingly aggressive and violent.
- Schindler's List: Amon Goeth, the ruthless SS commander who oversees the extermination of the Krakow Ghetto, definitely counts. His first scene in the movie shows him using the prisoners in his concentration camp as target practice. He gets way worse from there. And the worst of all, it's all Truth in Television.
- Se7en: John Doe, an extremely vicious Serial Killer who bases his murders on the Seven Deadly Sins.
- The Shining: Jack Torrance, despite providing the picture, is a strangely sympathetic example, as we witness him get more and more delusional and alienated from his family.
- The Silence of the Lambs:
"A census taker once tried to test me. I ate his liver with some fava beans and A Glass of Chianti. *hisses*"
- Hannibal Lecter is a cannibalistic serial killer, although a rather polite one. He escapes from his cage bludgeons his captors to death with a cool, detached expression on his face. He's the Villain Protagonist of the sequel, where he actually cuts off his own hand in order to escape at the end. Anthony Hopkins himself would be the first person to tell you that the guy's crazy.
- Buffalo Bill tries to build a suit from the skin of the women he murders because he thinks that wearing it will help him become female.
- Single White Female: From the number of people whom Heddy kills and impersonates she certainly seems to fall under the Axe Crazy heading.
- Sleepaway Camp II: Unhappy Campers and Sleepaway Camp III: Teenage Wasteland — The almost perpetually chipper and cheerful Angela Baker . Originally a kind of puritanical killer she just degenerated into killing for the sake of killing after a while.
Angela Baker: I've never chopped wood before, but I've chopped other things!
- Snow White and the Huntsman: Queen Ravenna. Other versions have always been self-centered, vain, and downright cruel, but this version will kill anyone who defies her without a second thought. Plus the implication that she's killed plenty of kings in the past.
- Star Trek: Captain Nero wakes up in the morning looking for new shit to blow up. And with advanced tech from the future, he can actually accomplish this. Sometimes he switches it up a little and becomes a Bladed Romulan Sceptre Crazy, instead.
- The Stepfather: The eponymous killer, whose sanity is shaky at the best of times, goes from perfect All-American dad to a ranting attacker who beats people to death with a wooden board or stabs them in them in the face with a rake at the drop of a hat.
- Taxi Driver:
- The psychopathic passenger played by Martin Scorsese is likely one, he even claims to be it. "You must think I'm pretty sick, right?" (and laughs).
- Travis Bickle acquires a few traces of this throughout the film, going on a murderous rampage by the end.
- Total Recall (1990): Benny becomes this after being revealed as The Mole, chasing Quaid and Melina with a huge drilling machine while mocking them.
- Transformers: Bonecrusher hates axes. They're nice for hurting things he hates more, though.
- Transporter 2: Trigger Happy Lola, the villain's Dragon. "Actually, my problem's not medical. It's psychological." (shoots the nurse.) And a few moments later: "What seems to be the problem?" "Me." (yet another burst of gunfire.)
- John Candy's titular character in Uncle Buck pretends to be this to scare his niece's boyfriend Bug.
- Universal Soldier: Sgt. Andrew Scott goes totally bonkers in 'Nam and murders his squad and a whole Vietnamese village, making for himself a necklace made from the ears of his victims before he is stopped by Lt. Luc Deveraux, who also dies in the process. After dying and being turned into an Universal Soldier, he eventually recovers his memories and returns to his old, murderous habits to persue his vendetta against Deveraux, who has also been turned into an UniSol
- Versus: The Yakuza with the Green Shirt (Kenji Mastuda) from Kitamura's seems to be utterly and completely unable to be serious or show any signs of normalcy through the movie; he constantly makes faces and sounds, laughs like a maniac, screams and overall draws attention to himself by simply being a nutjob in every scene where he's present.
- Both of the grandparents in The Visit. Especially Grandma.
- Who Framed Roger Rabbit: Judge Doom is for the most part, a calm, cool, and collected version. Then after he gets flattened he loses it and tries to kill Eddie in incredibly sadistic ways while letting Toon Town be wiped off the map.
- While flinging fireballs at the cops in X2: X-Men United, Pyro starts to get a grin on his face and enjoy himself.
- Jean Grey as the Dark Phoenix in X-Men: The Last Stand.
- Victor Creed from X-Men Origins: Wolverine, has a bloodlust that only mindless battle seems to satisfy.
- Viper from The Wolverine.