Crazy Jealous Guys in Anime and Manga.
- Adekan has several, but the most notable is probably Anri, who seethes with jealousy when watching Shiro act flirtatious with a woman.
- On Ah! My Goddess, Urd's ex-boyfriend Troubador was one of these. According to Urd, back when they were dating he would use his powers to make bugs and insects crawl out of the bodies of any men who tried to flirt with her. He tried the same thing on Keiichi when he mistakenly believed Keiichi and Urd were seeing each other.
- Ai no Kusabi:
- Riki's Unlucky Childhood Friend Guy. He is so in love with Riki that he gives him an unwanted penectomy (to remove the pet ring that was on his penis), as he's told that as long as Riki wears Iason's pet ring he'll never be free of him. He also blows up a fortress to kill Iason, Riki's lover.
- Iason Mink himself is one of these, and like Guy, he becomes extremely obsessed with Riki. It's not touched upon in the OVA, but the novel and audio drama have scenes where Riki sleeps with a female pet and is subsequently brutally tortured by Iason for "betraying" him.
- In Air Gear the Agito side of Akito's personality is normally the rather Ax-Crazy one but Akito is even shown to have a dark side of his own, becoming jealous to the point of scaring Kururu when she gets too close to Ikki.
- Elias from The Ancient Magus' Bride has had some moments of this; in particular, after his fiance Chise starts spending more time with friends, he doesn't know how to express his jealousy, and so transforms into his giant monster self and holds Chise a little too tight in his shadow/tentacle cavern until she threatens to kill herself to make him let her go. And she's still all about staying with him afterwards.
- Apparently he didn't learn his lesson the first time, because Elias takes it to the extreme when he attempts to sacrifice Chise's ten-year-old friend Stella in order to save Chise's life. And he admits his choice of "who" was largely based on jealousy. Chise doesn't forgive him so easily this time.
- Arakawa Under the Bridge: Hoshi over Nino. She barely even notices.
- Tokiwa from Ask Dr. Rin! spends the first few episodes either trying to win Meirin over or Murder the Hypotenuse, even if said "winning her over" means trapping her in a potential And I Must Scream situation. This is subverted, once the demon who has been possessing him is exorcised. The actual Tokiwa is a very sweet, if a little doofy, Chick Magnet who Just Wants His Beloved To Be Happy.
- Griffith from Berserk acted a lot like one of these towards Guts in the past. After Guts left the Hawks, Griffith's life went to hell and he grew to hate Guts and obsess over Casca instead. Learning first hand that Guts and Casca were lovers ultimately cause Griffith to snap. No, it does not end well for either of them when the Eclipse goes down.
- Guts himself has shades of this, due to his feelings towards Casca he gets angry that she blames him for Griffith’s injuries following their first battle with Zodd, and Guts bitterly laments to Judeau that Casca will never look past Griffith. Even after Guts is proved wrong and gets a Relationship Upgrade with Casca, he still gets pissy that Casca still cares deeply for Griffith. Post-Eclipse Guts’s fierce love for Casca is exploited by his Enemy Within, who plays upon Guts’s sexual frustration (since he couldn’t touch Casca) and nearly forces him to ravish her.
- The King of Midland is this towards Charlotte. His daughter. When the King discovers Griffith has taken Charlotte’s virginity, he personally whips Griffith and has him tortured for a year, then he tries to rape Charlotte while she sleeps. Last time we see the King before he dies he’s still obsessed with his daughter and still loathes Griffith.
- Serpico is definitely this towards his half-sister Farnese) since he has devoted his entire life to her and really doesn’t appreciate Guts flipping Farnese’s world on its head. Serpico has fought Guts three times over Farnese and he even admits to Guts he wanted to kill him out of jealousy for giving purpose to her life. Thankfully Serpico mellows out and thanks Guts.
- Betrayal Knows My Name: Luka is a mild version towards Yuki in both his male incarnation and female incarnation. He gets very noticeably pissed off and annoyed whenever he sees anyone touching or acting friendly with Yuki. He's also very protective of him.
- Kyo from Black Bird (2006) can slip into this towards Misao at times.
- Alois Trancy of Black Butler has tendencies of this sort towards Claude. Sebastian can be seen as this towards Ciel, once stating that "Young master is mine."
- Black Cat: Creed is in love with Train's carnage, and wants him badly. Badly enough that he gets downright murderous toward anyone he sees as "in the way", including Train's not-girlfriend Saya.
- In Blend-S, Dino doesn't take it well when he hears Maika may be dating someone. Also says he'll never let her quit, which is usually said in a cutesy manner, but can probably be mistaken for this trope as well.
- Boys over Flowers: Tsukasa Domyoji towards Tsukushi Makino, to the point of almost raping her out of sheer jealousy. He gets better later though.
- In Brave10, Kamanosuke is an Axe-Crazy yandere in love with Saizo's carnage and is very clear that Saizo is his to battle To the Pain with and no one's allowed to interfere. He naturally has a rivalry with Isanami over their claims on Saizo.
- Case Closed:
- Conan/Shinichi himself gets very jealous whenever it seems that someone else might be interested in Ran. Considering that Conan is a Deadpan Snarker who can't exactly act on it due to having been shrunk to a kid's age, it's almost all Played for Laughs.
- Heiji is also a mild version for Kazuha, even without noticing.
- Ceres, Celestial Legend: Shiso/The Progenitor to Ceres - stalking her across time, killing one of their own children due to jealousy, and basically causing the whole plot over his possessiveness of Ceres.
- Taichi in Chihayafuru struggles with this. As children, when he realised Arata and Chihaya were becoming friends and that Arata might actually be able to beat him in karuta (while Taichi was used to being The Ace due to his overbearing mother), he stole Arata's glasses before a match so he'd lose. Unfortunately for him, Chihaya already liked him so much that she offered to take his place. Later, when he and Arata meet at a tournament and it seems that Arata will finally be returning to karuta, Arata gives Taichi his phone number to pass to Chihaya. Taichi seriously considers destroying it, but his jealousy surprisingly recedes when Chihaya suddenly appears at the match as well and the three old friends are reunited. However, he doesn't care when other any other guy looks at Chihaya, and barely reacts even when she's asked out, because he knows that a) the vast majority of guys get turned off when they realise what a Hot-Blooded karuta fanatic she is, and b) she connects to people strongly through karuta so he only sees strong opponents like Arata as threats.
- Choujin X: Early on, Azuma Higashi is a platonic example. He's not very open about it, but he's clearly jealous of Ely when she becomes close friends with Tokio and starts hanging out with him more than he does. Feeding into Azuma's massive Inferiority Superiority Complex towards Tokio, he feels threatened by the prospect of Tokio no longer relying on him and turning to someone else. However, this whole dynamic is sort of flipped as the series goes on. After Tokio goes off on his own over the timeskip, Azuma turns to Ely as an emotional crutch much like he did with Tokio, eventually developing romantic feelings for her. When Tokio comes back after a year and starts being friendly with Ely, Azuma clearly feels threatened by their friendship and gets very clingy in regards to Ely. However, after Tokio and Azuma finally start talking and making amends with each other, Azuma comes clean to Tokio about having feelings for Ely. Tokio, understanding where Azuma is coming from, starts acting very self-conscious in regards to Ely, seemingly scared of kicking the hornet's nest in between Ely and Azuma.
- Code Geass:
- La Corda d'Oro: Yunoki shows mild signs of this early on when Hino is first getting close to Hihara; i.e., the minor chord and ominous background that occurs as he watches Hino and Hihara joke around. Fortunately, he shifts gears pretty quickly after he gets to know Hino better and Hihara displays genuine interest in her. He also shows subtle signs of this towards Hino, getting somewhat jealous when he heard she was hanging out with Tsukimori, Tsuchira, and Hihara in one chapter in the manga and later asking her privately if he can't have "fun" with her too. Also, Tsuchira for Hino.
- In Corsair, after discovering that Sesaam is alive and thinking Canale is going back to him, Ayace goes into crazy jealous mode. Just half an hour earlier, Canale had rejected Sesaam because he realized he was in love with Ayace. Ouch. Wrong choice, Canale.
- The dual protagonists of Crimson Spell have a mutual variation of this going. Each refers to the other as theirs and doesn't want anyone to touch the other aside from themselves. Havi is the more overt case but Vald proves just as bad, only better at keeping it under wraps. It shows most obviously during his demonic transformations; at one point, he threatens to destroy the world if Havi leaves him. Even Vald in his human form has his moments, as when he cracks a wall with the strength of his grip while watching Havi surrounded by women.
- In episode 17 of D.N.Angel, Saehara acts like one of these for Mio Hio. And in episode 23, Kael acts like one for Freedert.
- Maki in Darker than Black, (despite being a cute little kid), right down to trying to murder the guy his crush is in love with.
- Dawn of the Arcana: Caesar can get quite clingy and easily jealous when it comes to Nakaba. Also, Chapter 21 seemingly hints that Loki has feelings for Nakaba and is jealous of Caesar's relationship with her.
- Genkaku from Deadman Wonderland gets very annoyed and angry whenever he sees the possibility of a girl getting close to Nagi. (In regards to Shiro, he is shown being extremely agitated, wondering what relationship she has with Nagi, and saying that Nagi never learns, and that he'll just have to punish him again - which he tries by attempting to have Shiro and Karako raped. In regards to Karako, he stabs her when she hugs Nagi, telling her, "Don't touch my carnage, you shitty girl.") And later, Nagi does a double suicide with Genkaku, holding him down so Ganta can kill him. Genkaku appears extremely happy, and calls Nagi his "savior". He was also the one that killed Nagi's wife in the beginning.
- In the manga Desire Climax, both Hina and Shoei demonstrate these tendencies towards Mio. Hina even more so, since on many occasions, despite his cute and angelic appearance, he has demonstrated a chilling cruel streak and a manipulative personality; he wants Mio and is apparently willing to use tricks, blackmail, lies, and outright attempted rape to separate her from Shoei. He has even gone so far as to trick a half-blind Shoei into thinking he was Mio so he could attempt to seduce him, later telling Mio that he didn't do that because he loves Shoei, but rather because he would be "willing to do anything if it means I could separate you from that guy". He himself proudly admits that he's crazy when Mio calls him out on his actions, and attempts to seduce her. Thankfully, both he and Shoei mellow out eventually.
- D.Gray-Man: Komui is implied to be in love with his sister Lenalee, and goes nuts if there's even a hint of a guy being interested in her. In fact, a way to wake him up is to say, "Lenalee's getting married." In the novel, when Bak (who also has feelings for her) gives Komui a tea that makes one tell the truth, he has a breakdown when Bak asks, "Isn't Lenalee free to love who she wants?" He takes this to mean that Lenalee is in love with a guy and immediately pulls out a machine gun, saying, "Then I'll kill everyone and then die!"
- FAKE:
- JJ, who keeps following his "sempai" Dee Laytner and clinging to him. He gets over it, lets go of Dee willingly... and gets a boyfriend (sorta) in the epilogue.
- Dee can move completely into this trope at warp-speed if he feels motivated enough. Ryo can also suffer from Green-Eyed Monster syndrome on occasion, and when he does:
- Saito is one for Louise in The Familiar of Zero, though definitely not to the extent that Louise is a Clingy Jealous Girl for him.
- Shin from Fist of the North Star towards Yuria, in fact it only took Jagi suggesting to Shin that Kenshrio wasn't strong enough to protect Yuria which caused Shin to attack Kenshiro, stabbing his fingers into Ken's chest and not stop until Yuria said she loved him. At this point Shin is so crazed with love, he takes Yuria's words of desperation as "proof" of her love and even gloats to Kenshiro over it, before carting Yuria off and leaving Ken for dead. Of course Shin gets further angered that Yuria still doesn't love him and isn't impressed by his warmongering, and is heartbroken when Yuria seemly kills herself, Shin even makes a doll of Yuria to torture Kenshiro with.
- In the anime, Shin tries to make Yuria think Kenshiro is dead and murders two henchmen who reveal Kenshiro survived in front of Yuria.
- This is hinted at just once in Fullmetal Alchemist, when the Animated Armor serial killer Barry the Chopper attacks Riza Hawkeye. Because she shoots him instead of freaking out and screaming, he decides that he's in love with her. She puts in a call to her commanding officer, Roy Mustang, who arrives on the scene to witness Barry putting his arms around her waist. It's quite obvious that Riza is not happy with the situation, and Roy reacts by growling and putting on his ignition gloves, telling her to move out of the way so he can set Barry on fire for the impertinence. (This is the first hint in the story that the relationship between Roy and Riza isn't exactly platonic.)
- Full Metal Panic!:
- Gauron for Sousuke. Nothing pisses him off more than seeing Sousuke hanging out with his friends, or just simply having a life besides fighting Gauron. Gauron's reaction normally involves trying to eliminate these people in violent ways.
- Leonard Testarossa, one of the primary antagonists of the series. Leonard is handsome, sophisticated, and popular with the ladies. Which is why it drives him over the edge when his advances towards Kaname are vehemently rejected, because she yearns for Sosuke Sagara. Leonard's sister has a crush on Sosuke and is at odds with him. Sosuke keeps interfering with Leonard's plans. As the series progresses, Leonard becomes more crazy and unstable.
- Kyo of Fruits Basket turns into a very mild version of this around every guy who has some sort of relationship with Tohru, whom he eventually marries.
- Fushigi Yuugi: Suboshi for Yui.
- Date Masamune from Gate 7 is a Crazy Jealous Guy Played for Laughs. He's good just because his "kitten" Hana is in the Urashichiken, he get lose in his own Imagine Spot of Hana when he should being kicking ass and since his subordinate's main job is scold him when he gets over the line, Hilarity Ensues. But he tries to Murder the Hypotenuse twice.
- Get Backers: Takuma Fudou over Ban Midou. At one point he says to Ginji Amano, Ban's Heterosexual Life-Partner, "When you're around, Midou doesn't even notice me. Midou's eyes are not on me... because you're in the way!" and tries to kill Ginji.
- Hakuron from Haou Airen (who does cross into sexual assault towards Kurumi and gets killed by the guy whom he Forced to Watch his rape of her).
- In Happy Yarou Wedding, Todou has his moments when he thinks Yuuhi's cheating in any way.
- Katou from Haru wo Daiteita can drift into this territory when Iwaki is concerned. And he tends to react badly if anyone hurts him.
- Hetalia: Axis Powers:
- When Japan visits Greece's home and Turkey shows up all of a sudden, both Greece and Turkey (who hate each other as it is) turn into this towards Japan. Hilarity Ensues.
- China is a non-romantic example with a side order of Helicopter Parenting, as he can be very clingy towards his younger siblings, treating them like children. Their reactions vary: Hong Kong gets VERY pissy, Macau becomes passive-aggressive, Taiwan goes Tsundere...
- Lest we forget the resident male Yandere?Russia: So please be good to him from now on, okay? He used to be mine, after all.
- Arima of His and Her Circumstances fights with these feelings in regards to his girlfriend Yukino.
- Ryoki from Hot Gimmick for Hatsumi. He's utterly obsessed with Hatsumi, and while he at first just wants her to be his "slave," he eventually makes her his girlfriend. She's reluctant to get involved with him because he always seemed "scary" and she was genuinely terrified of him for a bit, due to an incident when they were younger where she suspected that he pushed her down the stairs. She gradually develops feelings for him, but still has moments where she feels extremely put off and scared of his overly possessive and violent nature. His violent obsession over her develops to the extent where he firmly states that she's not allowed to even think of/love any other guy except him, even her own brother. He also demands that she should keep conversations with all men under one minute, answer the phone on the first ring when he calls, and show up at least an hour early to all dates; he also often overreacts when a male's name is mentioned in conversation, even if it's just her little brother. If he happens to see her with another guy, he tends to go off on a jealous rage and hit her. She finally tells him she can't be with him anymore when he orders her to make the impossible decision of choosing between him or her family. When she leaves, him he says, "That stupid woman... If she can't be mine she should just die." She eventually gets back together with him, though, and agrees to marry him at the end in the hope that he'll start being nicer to her if she stays with him. Hatsumi ends up with Ryoki in the ending of the manga. However, in the Hot Gimmick S novel, which provides an Alternate Universe ending, Hatsumi ends up with Shinogu, her Unlucky Childhood Friend.
- In How to Raise a Boring Girlfriend, Tomoya, who claims to only like 2D girls, gets rather upset when he sees Megumi walk into the restaurant where he was working part-time, accompanied by her male cousin. He later asks to go on her shopping date instead of her cousin.
- In Jagaaaaaan, Robahata — or "Roba-Chan" — does not react well when he watches Karen lose her virginity.
- Naoki of Jazz, leading to a particularly horrible Kick the Dog moment with his lover Narusawa.
- Usami Akihiko of Junjou Romantica. He said himself that if Misaki ever attempts to leave, he will lock him up so no one can take him away. Fortunately Usami hasn't acted on it... yet. Misaki said Usagi was "his" when Sumi tried to kiss him.
- Nowaki and Hiroki from Junjou Egoist have both shown this in regards to each other; such as when Nowaki sees Miyagi attempt to kiss Hiroki, he pushes the two apart, grabs Miyagi's collar, raises his fist, and looks like he wants to beat the living crap out of him - and Nowaki is a Gentle Giant. Hiroki goes to the hospital where Nowaki works and sees one of his work sempai fawning over him, claiming him as "his," and latching onto him; Hiroki has an inner monologue saying he doesn't want to do anything embarrassing, as he marches up to the sempai, thwacks his head, and tells him to get his hands off "his" Nowaki.
- Shinobu of Junjou Terrorist gets jealous seeing a picture of Miyagi's deceased sensei whom he used to love back when he was Shinobu's age. Shinobu cries from frustration, thinking that he'll never be able to compete with her, and feels Miyagi will never love him completely; Miyagi puts those fears to rest, though. Miyagi usually acts nonchalant towards Shinobu, but when he sees Shinobu with an attractive foreigner when Shinobu was avoiding him, Miyagi's reaction is to grab Shinobu, throw him in his car, and kiss him.
- Subtly defied in Kaitou Saint Tail: Asuka Jr.'s impending Green-Eyed Epiphany over Meimi takes a while to kick in, not because he doesn't want to admit he cares about her, but because he dislikes the idea of being upset and bothered just because she's with another boy. He only manages to come around when it's reframed in a way that makes it more about her welfare rather than his, because his jealousy isn't over feelings of possessiveness or thinking that no other boy should be near her, but over his feeling that he can't trust anyone else to take care of her well if they take her away from him. (It helps that his main rival for Meimi's affections, Sawatari, is quite the invasive Abhorrent Admirer who really does repeatedly force Meimi into things she doesn't like and could easily get her into worse hot water if allowed to have his way.)
- Kamisama Kiss:
- Tomoe, he normally is a regular asshole to the heroine Nanami but should another man even look at her, much less talk to her, watch out. It's usually Played for Laughs - it's a Shojo series after all - particularly since it's one of the first early hints to his true feelings.
- Mizuki also has quite a bit of jealousy towards Tomoe and he is often seen trying to get Nanami to hate Tomoe by telling her lies and half-truths about him. Also played for laughs usually.
- Gilbert from Kaze to Ki no Uta. Befriend Auguste at your own risk. Auguste himself is an even worse offender towards Gilbert.
- Yusaku from Kimagure Orange Road. 90% of his Butt-Monkey episodes come from him trying to forcibly get in Hikaru's good graces, no matter what she thinks about it. In fact, Hikaru openly tells him she's not interested in him but on Kyousuke, but Yusaku simply refuses to listen to her.
- Kazehaya of Kimi ni Todoke is this to Sawako, although as a minor and played completely sympathetic trait.
- Kizuna:
- Ranmaru acts like this a bit about Enjouji, but it's nowhere near the serious poextent to which Enjouji acts around Ranmaru. Apparently it's In the Blood, because his half-brother Kai acts the same way around first Ranmaru, and later Masa.
- Then there's Jack, who will kill you if you sleep with Roy. He will take a sniper gun and put a bullet through your brain if you fuck his boyfriend.
- Haru Tsubaki of Koi Dano Ai Dano acts this way towards his best friend and crush Kanoko. After getting called out on it by Momoko, he starts to ease up.
- Kyo Kara Maoh!:
- Wolfram harbors a borderline obsessive jealousy in regard to his accidental fiance Yuuri.
- Sara is a borderline possessive Yandere in regards to Yuuri.
- In the manga Lilim Kiss, Souma, the one who previously released the titular succubus hated the fact Lilim did not drain him exclusively and went out to other guys during the night despite his attempts to force her to stay with him alone he ended up sealing her in a jealous rage. Upon learning she was released and didn't remember him and stayed with Takaya exclusively even though Takaya never threatened her, he steals the pendant and seals Lilim again so she will be his and his alone.
- In the manga Love Pistols, this is both Played for Laughs and played straight. Norririn acts like this in true Clingy Jealous Girl fashion whenever Kunimasa pays too much attention to anyone else, but he's never really serious about it, and he's in fact so uncertain about Kunimasa's feelings for him that when Kunimasa tries to play off their relationship like it doesn't mean anything to him, Norririn is incredibly hurt and breaks up with him. However, this trope is then played completely straight in Kunimasa who actually can't stand the thought of anyone else touching Norririn, and acts rather more violently if this occurs.
- In Love So Life, Nao does not like other men getting near Shiharu.
- Atsushi Otani from Lovely★Complex is a bit like this towards Risa Koizumi, but subtler than the standard.
- Rolan of MÄR shows signs of this during the Ghost Chess arc when Alviss tells him that Phantom likes him better. Cue, the two start fighting.
- Marmalade Boy:
- Kei is maybe the worst among Miki's suitors in regards to this. In the anime, however, he does get better.
- In the anime, both of the Grant boys show traces of this: older brother Brian is one for Ginny, younger brother Michael is another for Miki. They mellow out later. Ironically, Michael's most direct rival for Miki isn't Yuu... but the Older and Wiser Kei.
- Naoe from Mirage of Blaze expresses tendencies of this sort towards Kagetora. He was prepared to kill Kagetora and himself so that Kagetora will "never belong to anyone else". He also murders the hypotenuse by raping Kagetora's lover, and later forcing Kagetora to possess her to save his life.
- Mobile Suit Gundam: Char's Counterattack: Hathaway and Gyunei, formerly the Kid Hero and Only Sane Man of the film, devolve into this after meeting Quess Paraya, and both of them are driven to commit acts of murder for Quess's sake. Since Quess is a Newtype, it's possible hormones alone are not to blame.
- Just like Yuno is a Clingy Jealous Girl for Yukiteru in Future Diary, Akise is a Crazy Jealous Guy for him too. But while Yuno is more violent, Akise is more passive-aggressive and manipulative.
- Nabari no Ou: Raikou looks mildly annoyed whenever Gau interacts with or talks about Yoite. It's almost like he's jealous. Both Raikou and Gau state at some point that they would do anything for each other. Gau is so devoted to Raikou that he's willing to kill himself to make Raikou happier. Raikou, for his part, is protective of Gau to the point that when a mook hurts Gau, Raikou goes completely berserk, kills him, and mutilates his dead body.
- Gendo towards Yui in Neon Genesis Evangelion. Also, in Neon Genesis Evangelion: Angelic Days, Asuka and Kaworu are Shinji's childhood friends. Shinji likes Asuka and Kaworu is severely possessive of the boy when she or Rei get too close.
- In Okane ga Nai, you have Kanou and Ayase. Long story short: Kanou is ridiculously jealous and possessive, and hates Ayase even having contact with anyone other than him. Considering that Ayase is adorably cute and has Even the Guys Want Him to an extreme that may eventually shift genres into sci-fi territory (no, seriously, he has been nearly been raped so many times that it's just not funny, and there has been Wild Mass Guessing that he will turn out to be some alien creature that secretes pheromones), and Ayase has the survival instinct of a newborn bunny rabbit on a six-lane interstate highway, you can almost forgive the guy for being so protective. However, Kanou has huge issues telling Ayase that he loves him, and so if anyone even hints that they have an interest in him, he shows his affection in other, more painful ways.
- One Piece:
- Sanji can be a Nice Guy, but can also get very jealous when it comes to women he likes e.g. Heaby, one of the henchmen from the third One Piece movie, Chopper's Kingdom on the Island of Strange Animals, made the mistake of hitting on Nami in front of Sanji, resulting in him getting beaten senseless before the movie's end. Forget villains, Sanji will get jealous of any man who has better luck with women than himself; he was Burning with Anger that Luffy got to train in Amazon Lily for two years while he was in Ironic Hell and got further jealous upon learning Luffy has bonded with both Boa Hancock and Shirahoshi. Sanji also got jealous of Dirty Kid Momonosuke getting coddled by Nami and Robin, Zoro’s relationships with Tashigi and Hiyori and in the Enies Lobby anime, and of Franky getting cozy with Robin.
- Bizarrely, Sanji even gets jealous of Nami’s sentient cloud Zeus, and this time even Brook calls Sanji out on trying to start a Cock Fight with a living water vapor.
- The Bear King from Clockwork Island Adventure towards Nami, as when he learns Nami let Sanji rub suntan lotion on her naked back, he goes ballistic beating Sanji around and then has him crucified.
- Absalom from Thriller Bark is hinted at being this: he’ll stop at nothing trying to marry Nami, and when he sees Sanji “touching his bride” he tries to blast him with his invisible hand cannons. It gets more explicit when Sanji continues to keep Nami from him, as Absalom stabs Sanji in the back with a knife and mocks him for not being able to protect her, this triggers Sanji's Berserk Button.
- Doctor Hogback from the same arc was obsessed with Victoria Cindry and proposed to her, but she rejected him since she already had a fiancé. When Cindry died, Hogback teamed up with Gecko Moria to resurrect her and makes Cindry his personal slave; and if that wasn’t bad enough, Hogback mistreats Cindry out of spite for her rejection of him when she was alive.
- Shogun Kurozumi Orochi in the Wano arc towards Komurasaki aka Hiyori. He’s obsessed with her and her rejection of him causes Orochi to take his frustrations out on nearby Mooks. When Komurasaki seemly dies, Orochi becomes crazed and blames everyone, including an innocent girl, for her death.
- Sanji can be a Nice Guy, but can also get very jealous when it comes to women he likes e.g. Heaby, one of the henchmen from the third One Piece movie, Chopper's Kingdom on the Island of Strange Animals, made the mistake of hitting on Nami in front of Sanji, resulting in him getting beaten senseless before the movie's end. Forget villains, Sanji will get jealous of any man who has better luck with women than himself; he was Burning with Anger that Luffy got to train in Amazon Lily for two years while he was in Ironic Hell and got further jealous upon learning Luffy has bonded with both Boa Hancock and Shirahoshi. Sanji also got jealous of Dirty Kid Momonosuke getting coddled by Nami and Robin, Zoro’s relationships with Tashigi and Hiyori and in the Enies Lobby anime, and of Franky getting cozy with Robin.
- In Onegai! Samia-don, Simon "Sil" Turner is this for his cute neighbor Anne. Since he's also a Butt-Monkey, it's more often than not Played for Laughs.
- Only the Flower Knows: Kawabata acts very possessively towards Misaki, ostensibly out of jealousy. He apparently interrogates him about any acquaintances he makes at his university - and then he really doesn't like it when Misaki hooks up with Arikawa.
- Harry in Outlaw Star is very much this with additional stalker tendencies whenever he is around Melfina, and becomes irrational to the point of violence when she repeatedly rejects his advances and starts to spend a lot of time with Gene. Gene also acts like this around Melfina at times, though definitely not to the extent that Harry does.
- Tamaki of Ouran High School Host Club can sometimes fall into this in regards to Haruhi. He's mostly harmless, though, and a lovable idiot. Other members of the Host Club, particularly Hikaru, also behave like this about her from time to time; but again, they're mostly harmless about it.
- Osanai from Paprika tries to strangle someone who tried to take Paprika away from him.
- Suzu of Peacemaker Kurogane towards Yoshida and later towards Tetsunosuke.
- Jin towards Misaki in The Pet Girl of Sakurasou. While he himself makes no moves on her, when he overhears a couple of boys mention having sex with her, he immediately starts a fight with all three of them.
- Princess Jellyfish: Kuranosuke finds himself becoming jealous when Shu hugs Tsukimi and shoves them apart telling him to "Get your paws off of her!"
- Fushimi of Project K is this for Yata. Emphasis on the crazy part. He's so far gone that he'd rather be hated by him because at least that's better than being nothing at all.
- Ranma ½:
- Kunō, except that he's more low-key than the girls and rarely Glomp the girls he's interested in. (Kunō because, unless he catches them by surprise, Akane and Ranma beat his head in for trying.) Mousse, though, is one of these through and through — even the fact his antics usually get him beaten up (by either the girl he chases or by someone he glomps by mistake) fails to dissuade him. (All Played for Laughs.)
- Also, whenever Akane seemingly shows interest in anyone other than him, Ranma's jealousy knows no bounds. And when Ranma is hit with a Fishing Rod Of Love, he turns into this for Ryoga. Even going as far as attacking Akane out of jealousy.
- Gokudera from Reborn! (2004). He sticks to Tsuna like no one else does and constantly tries to get people killed if they start becoming "overly close" with Tsuna (and this is done in a comedic way). He becomes unreasonably jealous of anyone who is close to Tsuna, and is even shown watching Tsuna and getting incredibly pissed at Yamamoto for being so friendly with him. Then there's his violent reaction when Chrome kisses Tsuna.
- Saionji towards Anthy in Revolutionary Girl Utena.
- Sailor Moon:
- Prince Demando (Diamond) acts this way toward Queen Serenity, and then later her younger self Usagi - to the point of kidnapping Usagi, forcing her to wear a pretty gown of his choosing, and, in the manga and Crystal, giving her a Forceful Kiss.
- In the filler Makaiju arc, Ali is this to both Usagi and En. It goes in hand with En being a Clingy Jealous Girl for Mamoru and En himself.
- And Fiore for Mamoru in the R movie. To be fair, he was under More than Mind Control from the Kisenian flower. But he still kidnapped Mamoru and tortured Usagi to almost death...
- Also Umino acts like this in regards to Naru to a mild extent. Completely Played for Laughs.
- And Saffir tends to become this towards his brother Demando whenever Demando is obsessing over Sailor Moon, but he never really crosses the line and is mostly passive-aggressive about it. He does admit in the anime that he's jealous of Moon, though — and to Demando's Clingy Jealous Girl Esmeraude, even!
- Zoisite has shades of this towards Kunzite. It's especially obvious when Kunzite mentions thinking that Reika, one of Zoisite's chosen victims, is beautiful; Zoisite gets massively pissed for that one, and when he confronts Reika he verbally lashes out at her before turning her into a demon.
- Shiva of Saint Beast, to Yandere Murder the Hypotenuse levels.
- Sakura Gari:
- Souma Saiki shows these traits towards Masataka, but later mellows out. However, his possessiveness does go to horribly creepy levels before he lets go, such as raping Masataka and then blackmailing him to have sex with him. It's only after his suicide attempt, which is triggered by Masataka actually snapping on him due to his abuse, that he shows Masataka how much he really cares for him and their relationship stabilizes.
- Sakurako Saiki, revealed to be a boy named Youya, is frighteningly possessive of his half-brother Souma. This individual tortures every single servant boy/girl that Souma takes as a lover, and hates Masataka because he is the object of Souma's affections.
- Dr. Katsuragi is revealed to be really crazy for Souma as well, so much so that he rapes and tortures Masataka, ordering him to stay away from Souma, and sticks his hand in boiling hot water. Katsuragi later holds Souma down and tells him that "you belong to me," and attempts to strangle him when Souma starts talking about Masataka right before Souma manages to brilliantly fight him back. It's later revealed that he tried to help Souma kill his abusive stepmother (Sakurako's mom) when Souma was angry with her for her abuse. However, when Souma ultimately couldn't go through with it, Katsuragi grabbed Souma's hand (that held a knife) and made him slice his stepmother's wrists, and raped him that same night.
- Sekai-ichi Hatsukoi:
- Yuri manga Shiroi Heya no Futari ends with one of the girls, Simone, being stabbed to death by one of these.
- Shiro no Eden: Shuuto is very protective of Mashiro and constantly butts heads with Ai.
- Ryota Miyagi from Slam Dunk. One of his first appearances has him weeping river tears, screaming, and punching the lights out of Sakuragi because he mistook him for Ayako's boyfriend. To further illustrate things, Sakuragi was doing nothing more than walking with her and exchanging some small talk.
- Sleepy Princess in the Demon Castle: Demon Cleric Leonard eventually becomes this towards the Princess, much to his own chagrin and disgust.
- Gopher of Soul Eater is Noah's borderline personal fanboy. He beats Kid to a bloody pulp twice for having Noah's attention and gets extremely pissed off when Maka turns out to have the same uniqueness that made Noah apparently have a fleeting interest in Gopher. This gets very bad when Noah decides that he wants to have Maka as well. Gopher is featured in all of 3 chapters.
- It doesn't get any better. With his chance of killing Maka gone, Gopher beats up Kid some more until realising that while hitting him doesn't achieve anything, showing him something asymmetrical does. He exploits this until Noah turns up and takes Kid away.
- Spy X Family has Yuri, who’s this... to his own sister Yor and is boiling over with hatred for her husband Loid * for taking Yor away from him, not helped by the fact he’s also hunting Loid’s spy alter ego Twilight as a member of the Secret Police, meaning he wants to expose Loid in either case. He’s a particularly extreme example too, albeit one Played for Laughs, as just the sight of Yor about to kiss Loid - even when it was at his request when he was suspicious of their relationship - makes him freak out and try intervening. Though Yuri is a somewhat sympathetic case (well, as sympathetic as a guy who’s basically a freaking Gestapo can be), as it’s revealed Yor has been his Living Emotional Crutch since childhood where they in poverty and even just his big sister being out of country makes him ill. Also, while Yuri definitely doesn’t believe any other man is worthy of his sister, his love for Yor is appears to be childlike rather than anything sexual (hopefully).
- Stepping on Roses: Nozomu. To insane proportions. He even goes so far as to go around with an axe, "Here's Johnny" style, trying to catch Sumi "cheating on him." As if he couldn't get any creepier, finding out that Sumi is his sister only makes him even MORE obsessed with her.
- Tokyo Ghoul has its fair share.
- In the original series, Tsukiyama's obsession with Kaneki results in him becoming violent when he sees Touka taking a bite out of "his" prized meal. Character Development eventually leads him to mellow out considerably.
- In the sequel, Kanae is the obsessed cousin of Tsukiyama and wants to kill Kaneki out of jealousy. This feud ends up more complicated, as Kanae is actually Karren and she ends up sacrificing her life to save Tsukiyama, dying content.
- The Serial Killer Torso, who becomes obsessed with his victims and tries to force them to become his "lovers". His obsession with Mutsuki results in kidnapping, abuse, and eventually a bloody conclusion.
- And perhaps the worst case of all: Furuta / Souta, who reveals everything has been about his obsession with his childhood friend, Rize. He couldn't stand the thought of anyone touching her or having babies with her but him, so he first helped her escape from the Garden and later handed her over to Dr. Kanou after injuring her severely by dropping steel beams on her. He states that he's going to take over the CCG, and then marry Rize and force her to bear him an enormous number of children.
- Trans male Mutsuki is revealed to have romantic and psychotic feelings for his mentor, Sasaki/Kaneki and in a fit of madness stabs Uta who had disguised his face as Sasaki's while clinging to him in an affectionate manner and thinking that Sasaki belongs to him and begging him to never leave his side again as he dissociates badly without his Living Emotional Crutch. He realizes his feelings out of Sasaki's kindness towards him and his jealousy at seeing Sasaki and Touka together. He pictures the two of them with the word "die" written over Touka's face indicating his possible intentions towards her so he can have Sasaki/Kaneki for himself.
- Kish from Tokyo Mew Mew hates seeing Ichigo with Masaya so much that he's attempted to Murder the Hypotenuse a few times.
- Under Grand Hotel:
- Norman's in love with Swordfish, but pretends to be in love with Sen so he could get closer to Swordfish. He tries to persuade Swordfish to kill Sen but that doesn't work. So, on one occasion when there's a scuffle going on, he tries to get Sen out of the way by stabbing him with a pencil - but accidentally ends up stabbing his inmate Walter instead, who was trying to protect Sen in the hope of getting protection from Swordfish. When he finds this out, Norman holds a knife to Walter's neck telling him, "If you don't want to die, don't butt in again, Walter!"
- Also, Lain Brody. In the first few scenes we see him in, he gives Sen a blowjob, strips him, drugs him and outright molests him as he's drugged (including telling him "No way in hell am I letting Swordfish kill you. Because he doesn't love you. I'm the only one that can kill you."), rapes him with a mop handle, ties him up, and hides him in a dryer. And when Swordfish finds Sen, he gives him CPR. Lain responds to this by stabbing Fish in the arm with a fork and tries to stab him again while screaming at him, "Get off of Sen! He belongs to me!" Immediately after that, Lain is shot and killed by security guards.
- Vampire Knight: Kaname, to an extent. His main dislike for Zero seem to stem from jealousy alone, and he really wouldn't mind killing him.
- Done even more straight with a recent bonus, where he's threatening to kill a random day class student who plans on giving Yuuki a love letter. Arguably averted as it's Played for Laughs.
- Averted with Zero as his reasons for hating Kaname have more to do with him being a pureblood, and having been used/abused by him rather than being jealous.
- Rido definitely counts.
- Aidou shows traces of this over the affection Kaname has for Yuuki.
- V.B. Rose: Fairly early into the story, we're told that Mitsuya hates being around Sekiguchi because they're somewhat alike. Much later, the truth comes out: Sekiguchi gave Mitsuya's love interest Tsuya a friendly kiss on the hand during their first meeting. Mitsuya's hated him ever since.
- Invoked by Kaoru in ...Virgin Love. The reason he shuns romantic relationships is his fear of becoming like his man-crazy mother. His prediction does come true, but Daigo is willing to accept the madly jealous side of him and convinces him to give their relationship a chance.
- We Were There: Yano has a hard time trusting Nanami completely, displaying jealousy and possessiveness, even to the point of physically abusing her.
- Kyoya from Wolf Girl and Black Prince. Even though he's only acting as her boyfriend, he doesn't take Erika talking to or being with other guys very well. At one point, he breaks her phone in half when she gets another guy's number and demands that she never talk to him again. A few episodes later, he gets a little upset when he discovers that she gave another guy chocolate that she made for the sugar-hating Kyoya. It's more or less supposed to indicate that he sees the relationship as more than just a ruse and the thought of her being unfaithful is a huge Berserk Button for him.
- Haguro Dou from Wolf Guy - Wolfen Crest. If you think a logical reaction to someone talking to your special someone (in his case an anti-social werewolf) is to beat that someone within an inch of their life, bite out their tongue, and sodomize them, you probably qualify for the crazy part pretty well. And his "reaction" to learning that said antisocial werewolf Likes Older Women and has a crush on their Hot Teacher was kidnapping said teacher, having her repeatedly and brutally gang-raped (and drugged to make her enjoy it), and filming it so he'd be able to release the footage to the internet and destroy her reputation. This guy rivals Yuno herself in the Yandere department, and is considerably more monstrous.
- Furuichi from Xam'd: Lost Memories, who held a strong love for Haru and a strong jealousy towards Akiyuki. Things didn't work out well for him.
- Yashahime: Princess Half-Demon: Homura kills any man who glances at Tamano. Later she is imprisoned so that she no longer has contact with other men.
- Yuri!!! on Ice: Yurio is implied to be this to Yuri either in a platonic or romantic sense as he gets quite incensed whenever Victor and Yuri act affectionate towards each other. Also, in another mild case, Victor makes it absolutely clear to others with his mannerisms and behavior around Yuri that Yuri is with him and tries to keep him together with him. He's kindhearted about it though.
