When faced with the taboo topic of incest, most people would be understandably Squicked out. But for some reason, a number of fictional characters tend to have an inappropriate sort of love for family members that they're not really bothered by. For the sake of drama and tension, this sort of love tends to be mutual in order for the creator to find a way to make things interesting.
But not everyone in Fictionland is perfectly fine with jumping into bed with relatives. This type of character has to fend off the disturbing advances of the younger sibling who wishes to become their spouse, the way too touchy uncle, the hot cousin who loves making them feel uncomfortable, the mother or father who's interested in them in all the wrong ways, or whichever other relative has a depraved opinion of them.
This sort of relationship dynamic can either be used for Black Comedy or Played for Drama. The latter case tends to overlap with Villainous Incest if ever this has contributed to issues caused by a character's past (especially if the creepy relative managed to "have their way with them"). This can also be used as a darker take on a Sibling Yin-Yang or with any Long-Lost Relative reveal involving a villain and hero.
Take note, this does not apply if the object of incestuous affection is unaware of the attraction. The entire point of this is a character who's repulsed by their relative's inappropriate attraction to them.
- Axis Powers Hetalia has the resident Yandere, Belarus... whose Yandere tendencies show in the form of a Big Brother Attraction towards Russia. Her constant stalking and Ax-Crazy tendencies scare the shit out of him and he often tries to hide from her.
- Baka and Test: Summon the Beasts gives Idiot Hero Aki a bunch of romantic admirers, his sister being one of them. Naturally, Aki is disturbed by her attraction to him and fears her since she shows some rather possessive behavior.
Akira: (showing Minami and Himeji some photos she took of Aki) And this is Aki taking a bath yesterday!
- Late in High School Ninja Girl, Otonashi-san, it's revealed that Kariya-sensei's older sister is in love with him. This is also the reason why he doesn't return Kunitachi-sensei's affection, since the two women are Identical Strangers.
- Shougo from Kono Naka ni Hitori, Imouto ga Iru! is stalked by his little sister who intends to marry him. Complicating the matter is the fact he hasn't grown up with her and doesn't know who she is.
- Last Exile has a case of this but with the incest itself being subtext. Delphin is heavily implied to be attracted to her younger brother Dio; but even if she is, it's made clear that Dio wouldn't return those feelings.
- The protagonist of MM! is pursued by both his mother and his older sister, much to his horror. It's entirely Played for Laughs; in one episode he loses his memory and they both pretend to be pregnant by him in order to bind him to them.
- Johan Liebert from Monster is this combined with a bit of Love Martyr towards his twin, Anna/Nina. How? Well for starters, he developed feelings for her despite the fact she had tried to kill him and continues to do so as adults.
- Ikuto from Shugo Chara! is horrified by Utau's affection to him. It's soon revealed to be because Utau is his sister.
- The Breeding Cult in Tokyo Ghoul has been practicing inbreeding for numerous generations, even against the will of some of the Breeding Slaves. Rize Kamishiro was a victim of this cult and was intended to be impregnated by her father. Her half-brother Furuta strongly disapproves of this and wants her to be his bride instead. No wonder she escaped.
- Ichiroh!: Nanako spends a portion of the first volume fighting off the advances of her brother. He eventually leaves to make himself a man worthy of her, much to her relief. All of this is done for comedy.
- Madelyne Pryor developed this in spades with Nate Grey, the Age of Apocalypse counterpart/half brother of her son, Cable (he was created directly from Scott and Jean's DNA), after he accidentally resurrected her while unconsciously searching for the 616 version of his mother. It didn't help that they looked more or less the same age, and neither recognised the other (Maddie's memories were initially scrambled and she only knew baby Cable), while Nate had only briefly met AoA Jean (their kinship was psychic). It also didn't help that they were written with smouldering sexual tension, the narrative blithely describing them visiting Paris like any other young couple in love. It never explicitly goes anywhere, and Nate backs off hard once he figures out who she is. Maddie, once she gets her memories back...not◊ so much. She began as a textbook Tsundere, and became a textbook Yandere, periodically helping Nate, then trying to kill him, and vice versa, in between playing Murder the Hypotenuse. Despite, or because of all this, it got to the point where going by the letters column, they were the series' Fan-Preferred Couple - and the writers certainly seemed amenable.
- In InnerDemons, once Twilight's Queen persona takes over, she drops all the subtlety in regards to her attraction for her brother Shining Armor. So much so that she imprisoned and impersonated Cadance in order to sleep with him. Shining Armor understandably rejects her offer to be with her, which causes Twilight to have a Villainous Breakdown, which endangers Cadance's life.
- Scar in Nala:My Father's Madness makes advances towards his daughter Nala, who rejects him. Granted, she didn't know until later that he was her father, but he did. The pride gets disgusted upon learning about this.
- In Perfect Lies, a WizardsOfWaverlyPlace fanfic, Alex destroys the happy life Justin's built by luring him into an affair with her. This is made all the more worse with how much she enjoys it
- Back to the Future has a case of inverted Oedipus Complex when Marty travels to the time his parents were in high school. After he ruins the chance for his parents to get together, Teen Lorraine ends up getting attracted to him instead. Of course, Marty does not wish to entertain those thoughts of hers and would rather get her back together with his dad. Needless to say, it was quite an uncomfortable experience for him.
- Brimstone: Joanna's unnamed father, a stern preacher, shifts his attention to his daughter after losing interest in his wife Anna, eventually raping her. Joanna is revolted and attempt to run away from home, kicking off a years-long vendetta as the preacher continues pursuing her and murdering everyone who gets in his way.
- Gladiator: Lucilla, daughter of the late Emperor Marcus Aurelius, had to fend off the advances of her brother (now Emperor) Commodus, who killed their father to ascend the throne. She already has Unresolved Sexual Tension with The Hero Maximus, but mostly she's just repulsed by the idea.
- Hellraiser has Frank, who's very fixated on his niece Kristy. He even tried to rape her. Frank in general was portrayed as a savage hedonist who wanted to cross any boundary he could, including sleeping with his brother's wife, murdering people to replenish himself, and of course, seeking out the Cenobites in the first place.
- Walter from Kiss of the Tarantula is his niece Susan's Stalker with a Crush and tries to convince her to be with him at one point.
- In The Lodgers, the family consists of a long line of incestuous twins, each cursed to breed and raise the next generation of twins or fall victim to the eponymous Lodgers. While Rachel finds the idea repulsive and is determined to resist the curse, Edward is eagerly (and aggressively) determined to embrace it.
- Not Another Teen Movie has Catherine, who likes, well, everyone, but has a very particular desire throughout the film to sleep with her brother Jake, and keeps chasing him. Jake doesn't seem to notice it to start with, but after their dad suggests he practice sex with his own mother, he becomes repulsed by his family's advances and seems to be the Only Sane Man trying to reason with them and fighting Catherine off from chasing him.
Jake: What is wrong with this family!?!
- A Song of Ice and Fire:
- Viserys was interested in the Targaryen tradition of Royal Inbreeding and as such, lusted for his sister Daenerys. Dany is clearly uncomfortable about it—not that she has an issue with incest in theory, but Viserys is an abusive piece of shit. Thankfully, they never actually got married due to Dany being wed to Khal Drogo out of necessity.
- In A Clash of Kings, Asha reunites with her brother Theon (unknowingly on his part) under the guise of a shipwright's wife. Since Asha's fully aware of who he is, she of course, expresses displeasure when he starts fondling her. Fortunately, Theon's attraction to her doesn't last long.
- Since he's considered her uncle by marriage, Lord Baelish's view of Sansa as a Replacement Goldfish for his first love (who's her mother) can be considered this. Although she initially just suspected it, her suspicions were confirmed when he forcefully kissed her.
- In Doctrine of Labyrinths, Felix is tormented by his attraction to his new-found half-brother Mildmay for quite some time, and when Mildmay realizes what's going on he's pretty uncomfortable about it, although he tries to be as non-judgemental as possible. To his credit, Felix never makes any real attempt to push for a sexual relationship (his feelings were revealed purely by accident) as he knows his brother isn't interested, but it makes things understandably tense between them.
- Donkeyskin has its plot kickstarted when the king decides to marry his daughter because he couldn't find anyone more beautiful than his late wife. Understandably, the princess is horrified at this plan and in despair, seeks help from a Fairy Godmother
- This factor gets taken Up to Eleven in its Grimmification of a retelling, Deerskin. Here, the king manages to force himself onto his daughter, resulting in her getting pregnant. Though in this retelling, the king's reason for wanting to marry his daughter is slightly different. The princess looks very much like her mother, making his disturbing attraction a case of finding a Replacement Goldfish for his wife.
- The Silmarillion introduces Maeglin, who alone among elves lusted after a cousin (albeit one he hadn't met/known existed until well into adulthood). Obviously being the only elf not turned off by the concept of incest, Idril rejected Maeglin. Still, Maeglin's lust/obsession was so great that he also became the only elf that ever willingly helped Morgoth, destroying Gondolin in an effort to get a romantic rival killed, and trying to murder her 7 year old son. Idril fights back, successfully, and her husband Tuor (an extremely angry Papa Wolf) pitches him off the cliff.
- In Confessions of Georgia Nicolson, Georgia used to really get along with her cousin James as a kid, and when he visits when they're teenagers, Georgia is happy to repeat some of the childish games (i.e., wrestling, tickle-fighting, etc.) they used to play, seeing it as being for old times' sake. However, James gets the wrong idea and makes multiple attempts to put the moves on her, much to Georgia's disgust.
- Game of Thrones:
- Just like in the books, Viserys isn't too subtle about his attraction to Daenerys (see Literature for more information).
- Likewise, same goes for Petyr Baelish's attraction to Sansa, who's his niece through marriage to her aunt.
- Jon Snow and Daenerys find out that they're actually aunt and nephew after already having fallen in love and consummated it. She wants to continue it, but he is very visibly uncomfortable with it and rejects her every advance without outright saying it.
- Played With regarding the Greyjoys; when Theon returns to the Iron Islands for the first time since he was a child, he unknowingly hits on and gropes Yara, his sister; she knew who he was and let him do it anyway, even encouraged it, purely so he'd be squicked out when he found out. The first time they interact afterwards, she makes a suggestive comment to gross him out further, but its clear she's not actually attracted to him.
- Criminal Minds:
- In an episode, one UnSub whose victims were daughters of wealthy figures has actually been projecting the image of his older stepsister onto said victims. Garcia finds out by digging through his background that he was in love with the daughter of his mother's second husband and was often overly affectionate with her even though she was clearly uncomfortable. This ended up driving him insane after her death, which caused him to go after young women who resembled her in an attempt to recreate the last moments of her life.
- There was also an earlier episode where an UnSub was lusting after his adoptive sister, justifying it because they were Not Blood Siblings... only to find out she's actually his mother with the woman he thought to be his mother being his grandmother. The shock at finding out he has been unknowingly wanting to have sex with his mother is what led to him murdering single mothers.
- One UnSub had a somewhat more sympathetic take on this; after the death of their parents, he was left alone with just his older sister, and as he was heavily bullied she was also his only friend. He wasn't necessarily sexually attracted to her so much as she was the only person he had any positive interaction with, so he became overly attached to their relationship and expressed affection that was more than a little romantic. When locals noticed how affectionate he was to her, it started a rumour he wanted to have sex with her that lead to him being beaten up and driven out of town under the belief he was depraved, which messed him up further. He began starting fires to kill the people who had been responsible for it, and desired to reunite with his sister. For her part, she wasn't as attached to him as he was to her, but she still cared deeply for him and was troubled by the way he had developed.
- This factors into the resolution of the Agatha Christie's Marple episode "Sleeping Murder," in which a young woman, Gwenda, gradually realizes that as a child, she witnessed the murder of a woman named Helen. It eventually surfaces that Helen was Gwenda's mother, and the killer was Helen's brother, the uncle with whom Gwenda recently reconnected. When Gwenda was a baby, Helen faked her death and moved to India to escape her brother's incestuous overtures, then returned to England after a few years using a fake name; she became her husband's "second" wife. But her brother found her, and when she rebuffed him again, he killed her.
- Gotham: Alice Tetch had to run away from home and go into hiding because her brother Jervis (aka the supervillain the Mad Hatter), according to her, had "thoughts a brother shouldn't have", and used his hypnotic powers to make her do things she didn't want to. Meanwhile, he's completely in denial about it, and insists that it was mutual.
- Kings: Andrew Cross, son of the King's brother-in-law and advisor William Cross, is a sociopath who lusts after his aunt Queen Rose. Needless to say, she's terrified of him.
- Arrested Development:
- George Michael spends the entirety of the series in love with his first cousin, Maeby, who seemingly sees him more like a brother and is a little creeped out whenever his obvious crush gets a bit too obvious. A Running Gag is his obsession with anything relating to cousin-incest. They do seem to get together years later after finding out they're only cousins by adoption.
- Meanwhile, George and Lindsay (his dad/her mom) discover that the latter is adopted after having been raised thinking they were twins, and almost immediately she tries to jump into bed with him. She admits she "always" been attracted to him, and interprets several of his past actions (done purely out of familial affection, not romantic attraction) as being proof he felt the same way. He is understandably deeply disturbed by this development.
- Happens a lot in Classical Mythology. One example is the story of how Arion was conceived. Poseidon was pursuing his sister Demeter, who kept fleeing from him. She transformed into a mare in order to escape faster. Unfortunately, Poseidon managed to transform into a stallion and caught up to her, then raped her.
- In The Bible, Amnon was heavily attracted to his half-sister Tamar. When he managed to get her alone, he tried to coerce her into having sex with him. Tamar protested and he eventually raped her, which would later indirectly cause him to get murdered by Absalom.
- Byblis from The Metamorphoses is in love with her twin Kaunos. When she confessed her feelings, he became (rightfully) disgusted.
- Downplayed (but certainly present as subtext) in John Webster's The Duchess of Malfi, where it's implied that Ferdinand, the title character's twin brother, opposes his sister's marriage not just because she married below her station, but also because he's attracted to her. She's definitely creeped out by the intensity of his opposition.
- BlazBlue: In the gag scenarios, Jin shows signs of being attracted (in a humorously creepy way) towards his own brother Ragna, who always tries to rid him off in obvious disgust.
- Can occur in Crusader Kings II if a character is rebuffed from attempting to seduce a relative (the game's opportunities for incest are of memetic proportions).
- The Sims 3 makes flirty interactions between second cousins and cousins once removed possible, due to the game not recognizing these types of familial connections. A possible result is a scenario similar to the above Crusader Kings II example. The same thing can also happen to Sims who, as children, were taken out of their family's household and adopted into another one. However, this is arguably more of a case of Surprise Incest.
- Sexy Losers has Kenta's Horny Mom. And, a gender-reversed version of the storyline that takes a turn for the dark...
- In the Oglaf strip "Jocasta Loves Oedipus", multiple Jocastas (somehow) are attempting to seduce Oedipus, on the logic that the prophecy means he might have to have sex with them in order to be born.
- CollegeHumor made a Played for Laughs version of Back to the Future's inverse Oedipus Complex scene, in which Teen Lorraine has sex with Marty in the car and Doc Brown sends back Marty to stop that, only to make it worse every time.
Teen Lorraine: This feels so wrong... and yet... SO GREAT! [goes over Marty]
- Futurama: During a trip to the past Fry's grandmother starts hitting on him after her boyfriend, who was presumed to be Fry's grandfather, is killed. Fry is initially squicked out by her advances but reasons that his "grandfather" being dead means she isn't actually his grandmother, so it's okay to sleep with her. The next morning Professor Farnsworth informs him that he was wrong and, as a result, Fry is now his own grandfather.