There are exceptions. Madison Sinclair from Veronica Mars had great parents, and was still a horrible person. She's an outright Inverted Trope, being a (double) example of In the Blood. Avoiding spoiler tags, Madison is exactly who her parents raised her to be... for the correct values of those nouns and pronouns.
3rd Rock from the Sun: Parodied, when Sally decides to have a childhood and takes up a child's ballet class, Dick doesn't come to her performance. Harry and Tommy congratulate her on experiencing the neglect and rejection of a normal childhood, and Harry informs her that "if you ever flip out and kill a guy, you can blame it on Dick".
90210: This spin-off has Liam starting off as bad...so bad he's almost 'evil'. Then it's explained he had a jackass step-father. Dylan from the original series (mum's a hippie, dad's in jail) also works, and for some extent most flaws on most characters (Kelly's mum's a drunk, Steve's adopted, Gina grew up poor, David's the son of a serial cheater and a schizo...).
Angel's father wasn't a bad man, not abusive, just stern. The two had a difficult relationship, and he was the last of the family that Angelus killed on being turned. Darla told Angelus that now he'd never be able to beat his father. Angelus does not have a Freudian Excuse. He is a particularly vile vampire who takes the darkest, most screwed up interpretations of the being that was once Liam and magnifies them. Liam might have hated his father, but they were still family. Angelus' first act as a vampire was to kill his family. There is no excuse.
Wesley also has a difficult relationship with his father. He just can't seem to live up to the man's expectations.
In season 1, the team deals with a telekinetic girl who was molested by her father. Neither crazy nor evil, she does have issues.
Lindsey, one of the lawyer's from Wolfram & Hart starts a Motive Rant about how he grew up poor and resolved never to end up like his father, grovelling to the repo men as he was being evicted, but Angel takes the piss by pretending to sleep through it.
Wesley, of all people, chastises Angel for hiding behind his gyspy curse so he doesn't have to face having actual relationships with women. Angel actually acknowledges he is completely right.
The constant physical abuse Kara suffered at the hands of her mother, coupled with her father's abandonment of her, goes a long way towards explaining why she's so dysfunctional as an adult.
Cavil. The genocide of the colonies was brought about because he thought his parents loved humans more than him. However, he decides to go so overboard with this that he just comes across as a whiny brat who uses the excuse as a shallow pretext for his own murderous urges instead. In probably his most despicable act, he knowingly raped his Cylon mother, yet still has the gal to blame her for his own actions when she offers her sadistic son a chance at redemption.
Beverly Hills 90210: Valerie is given a succession of increasingly horrifying Freudian Excuses. First, her father committed suicide. Then, it is revealed that she was the one who found him in a pool of blood. Later, we learn that her father had been raping her since she was 11 years old. And for the grand finale, she was the one who murdered him.
Blackadder II: Parodied, in which Blackadder discovers and exploits a super-villain's Freudian excuse with deadly accuracy:
Blackadder: One thing, Ludwig, just before you go - were you ever bullied at school?
Ludwig: [Tense] What do you mean?
Blackadder: Well, all this ranting and raving about power. There must be some reason for it.
Ludwig: Nonsense, no - at my school, having dirty hair and spots was a sign of maturity.
Blackadder: I thought so. And I bet your mother made you wear shorts right up till your final year.
Ludwig: [Losing it] Shut up! Shut up! When I am King of England, no one will ever dare call me 'shorty greasy spot-spot' again! [Storms out]
This was lampshaded when a psychotic vampire captured and tortured Buffy's mother and complained to her about his mother "stealing his self respect", before adding "I have mother issues. I'm aware of that."
Faith is said to be who Buffy would be if she was never loved. Faith turns evil and works for the Big Bad because he's the first parental figure she had that actually loved her. Aside from her first Watcher, who was brutally murdered in front of her.
Spike's mother tried to rape him after he murdered her. There's also the idea of how utterly disgusted he is with Angelus, a large part of the reason for their hatred seems to stem from attempts to make Spike just as bad as he is.
Pearl and Nash from Season 9.
It's hinted that Principle Snyder had Mommy Issues. Also, there's this:
Buffy: You never ever got a single date in high school, did you?
Snyder: Your point being?
Camp Rock: In this Disney Channel movie, Tess' almost-instantaneous Heel-Face Turn comes as a result of her mother taking a cell phone call during her performance at Final Jam. To Tess' credit, she owns up to being a bitch despite the fact that the girls she's bullied don't actually show her any sympathy or even bring this up, making the application of this surprisingly somewhat less of a Broken Aesop than the previous examples.
An earlier scene in the movie showed that Tess' mother had made something of a habit of not making enough time for her daughter. (Tess tries to call her and, though we're not privy to the mother's end of the conversation, it's made clear that she blew Tess off because she was busy with her concert.) The phone call thing at Final Jam was apparently just the latest in a long string of these incidents.
Cases of the 1st Department: The team suspects that the murderess in "Hatred" was abused as child, possibly even raped, and later disappointed by all males in her life. It probably triggered her pathological hatred of men.
Community: Jeff's commitment issues, aloofness and jerkassery can be traced back to his drunken and abusive father, his parents' divorce and an instance of childhood bullying so bad that young Jeff peed his pants and had to change schools as a result.
Cracker: Sticking with the serial killers and criminal profilers - it's regularly used and (occasionally) subverted in this show (and I guess probably its US remake as Fitz - I gather 'cracker' has another meaning on that side of the Atlantic...). It's a show about what makes people do terrible things, so it regularly delved into Freudian Excuse territory.
This made for a particularly intense piece of characterization in one episode. The profilers bust the murderer of the week through their understanding of his crappy childhood, and Agent Hotchner, while interviewing him, says that with an intensely violent, abusive childhood like that, it's not surprising that some people grow up to be killers. As they're dragging him away, the murderer asks what Hotch, meant, that some people grow up to be killers. In his crazy-intense voice, (CSI's Horatio Caine without the sunglasses) Hotchner replies that some people grow up to catch them.
A slightly humourous example comes from an episode where Hotch and Reid go to interview a serial killer, Chester, on death row. After a series of events that leave them locked in the room with the killer, Reid saves them both by profiling the shit out of him for thirteen straight minutes, linking all of his violence back to his childhood and saying that Chester "never really had a chance" to be anything but. Cue chuckles when Chester asks if it's true that he never had a chance to escape his sociopathic tendencies, and Reid replies with an offhand, "I dunno, maybe," as he flees the room. It kind of speaks to his genius, that he's able to cook up an elaborate Freudian Excuse in seconds, spiel it for thirteen minutes, and then carelessly discard it.
A massive number of killers in the show have terrible childhoods. Often, it's used to explain not just why they kill but why they kill in that particular fashion. One of the major themes of the show is the question of how evil arises, so it's only natural that this trope would come into play a lot. Some of the most extreme:
Tobias Hankel was raised by an abusive religious fanatic who went as far as to burn a cross into his forehead with a red-hot poker.
Samantha Malcolm was sexually abused by her father, who then gave her repeated electric shocks to shut her up about it.
Darrin Call was raised by his abusive father, who was a serial killer himself and who would make him help bury the bodies of his victims.
This show is fond of this. To take just some examples:
Kathleen becomes a bigger Jerkass every episode. Eventually we see that she has an alcoholic mother and chronically absent father. She remains a Jerkass for the rest of the show, although she does change in the sequel series Degrassi High.
Stephanie (Alpha Bitch) has an overprotective, very conservative mother, which makes Stephanie want to be the glamorous, all-powerful vixen at school.
Liz, a Snark Knight who is eternally negative and repeatedly harassed (but indirectly, via vandalism) a girl who had an abortion, was almost aborted at the insistence of her father against her mother's will. We later learn she was sexually abused for approximately 4 or 5 years before she came to the series by her mother's then-boyfriend.
There are decent parents on the show, but they are all subject to strict Parent Ex Machina. (This was a conscious decision by the show's creators, who wanted parents to appear as little as possible.)
Liberty, the resident Control Freak, has pushy parents who had impossibly high expectations for her, and no expectations at all for her pesky little brother.
Alex started as an utterly evil gang member, until she was revealed to have no father and a drunken mother who was beaten by her revolving door of boyfriends. Alex eventually went through Badass Decay, but unusually, that wasn't until many episodes later. In the episode where we learn about her parents, it's just an excuse she uses to beat Rick up.
Dexter himself as well as several supporting characters.
Then again, it is pretty traumatic that it may cause insanity. His mother was dismembered with a chainsaw in front of him and then he and his older brother (who went just as insane) were left to soak in their mother's blood (which filled the entire floor of the shipping container they were in and went was an inch high) for days.
In the books, Cody and Astor Bennett, Dexter's step-children, were horrifically abused by their father early in their lives. They're growing into a serial killer tag-team, and Dexter has taken it upon himself to teach them the Harry Code in order to channel their murderous impulses into "something productive", just like Dexter's adoptive father did for him.
There's also Season 4's Big Bad, the Trinity Killer. He ritualistically kills cycles of four people. First he buries a young boy in concrete, which represents the preservation of his own innocence. Then he murders a young woman, an older woman, and an older man to reenact the deaths of his sister, mother, and father.
Also, the Master, as "The Sound of Drums" has revealed that at the age of eight, as part of a Time Lord initiation ceremony, he looked into the Time Vortex, which drove him insane. Of course, that episode also revealed that every other Time Lord saw the same vortex, and he was still the only one we know who went supervillainy as a result. "The End of Time" reveals that the root of his villainy is more complicated than just the Time Vortex.
The Doctor Who Expanded Universe audio drama Master, which predated the new series, gives another origin for the Master's evils that may or may not have affected his Vortex Madnessnote which would make a great trope name: In his youth, the Doctor was visited by Death, who wanted to make him her disciple. The Doctor avoided her by directing her to the Master, turning him into Death's Champion. He regretted this decision since.
Everybody Loves Raymond: Discussed Trope where we learn that Deadpan Snarker Frank was indeed beaten by his father. What's interesting however is that they actually do go into depth about how his father being beaten as a child too, and even his father as well...Ray and Robert both were surprised by this fact; because although Frank isn't exactly an 'ideal' father himself, he never actually hit them.
Farscape: Scorpius was revealed to have been engineered and brutally raised by the Scarrans, spawning an intense hatred of that species for his treatment as well as for the rape and death of his Sebacean mother. For this reason, he's prepared to do anything he can to take revenge - including the acts committed against John Crichton. However, when Scorpius actually brings up these details close to the end of the third season, he does so not to make Crichton pity him, but to try and convince him that the Scarrans must be stopped before any more innocent people suffer - and given their actions in the fourth season, he's not exactly incorrect.
Frasier: Spoofed in the episode "Fool Me Once, Shame on You, Fool Me Twice...":
Frasier: Oh yes, here it comes - the old sob story. "Daddy didn't love me. Mother ignored me. The bully next door stole my baseball glove." Phil: No! Dad loved me. Mom spoiled me. And I was the bully next door.
Freaks and Geeks: Lindsey Weir can't stand obnoxious Kim Kelly, until she is invited over to her house for dinner and sees how awful Kim's family life is.
Friends: Pretty much the subject of the play Joey stars in, Freud! (Not just Freud, but Freud!)
Chandler has some serious issues with his mother, and describes her as "a Freudian nightmare".
Sigfried: Do you think it was because we lived in Florida?
Max gives an Eye Take as the episode fades to the credits.
Girl Talk: The only sympathetic character in Stacey The Great's clique was shown to be The Unfavorite of her mother, who doted on the girl's other sister to the point of forgetting the very important ice skating even despite being reminded about it 6 times.
Santana Lopez spends the whole of season one as the "beta bitch" to Quinn Fabray, and it isn't until season 2 we find out the reason she's so hostile in because she's afraid of someone finding out about her sexuality. In season 3, it is revealed that she had a abusive childhood in a rough part of town, in which her grandmother attempted to sell her, called her "garbage face" so often she forgot her real name and has at least once threatened to beat her with a chair. This is played for laughs, though.
Quinn Fabray was bullied badly before coming to Mc Kinley High, which is elaborated on in "Born this way" as a Freudian Excuse for her cruelty. Of course, every season the writers think up a new freudian excuse for her to be the way she is (most notably in "Ballard", "Preggers", "Born This Way", "I Kissed a Girl" and "Big Brother")
David Karosky bullies Kurt so badly in season two, because he's gay too and is afraid of his family finding out Some fans argue this doesn't justify his behavior. After his Heel-Face Turn, he agrees, and is deeply remorseful.
Sylar. His father's even played by John Glover, who played Lionel Luthor in Smallville.
While it isn't depicted in the show itself, Malcolm McDowell has speculated that his character, Mr. Linderman, must have had "quite an unhappy childhood" to take his plans so far.
This is confirmed in Volume 4, where flashbacks show that he was placed in an internment camp simply because he has powers, and given his deduction on what the camp actually was, its likely that he may have spent time in the German Concentration Camps when he was younger.
Subverted by House. While House's Daddy Issues make up a large part who he is, only one person knows about the real abuse (the ice baths and being made to sleep outside) and that had to be dragged out of him. This was one of his Pet the Dog moments too. He was trying to offer comfort to a rape victim. He was the first to figure out she'd been raped, and maybe this was because he'd been abused (Though not sexually as far as we know) in the past.
Parodied by Amber in a Season 4 episode. "Why are you afraid to lose?" "Mommy didn't love me! Daddy expected too much of me! ...Something! What is it you want me to say?"
Ironically, Hugh Laurie actually does have parent issues because he felt they disliked him and expected too much from him; his father Ran in particular was a distinguished medical doctor (how's that for irony) and an Olympic rower who won gold in the 1948 Coxless Pairs. They also apparently disapproved of his wife. Read and see enough interviews with him and his low self-esteem issues become fairly obvious. This has not, on the other hand, stopped Laurie from being described as a "panda" by everyone who knows him.
iCarly: Sam Puckett, despite not being the Alpha Bitch (she's more like The Dragon for Carly, who could with some Alternate Character Interpretation be seen as the Alpha Bitch at her school), has several of these: Her mother is horribly ignorant and a terrible parent who pays little attention to her. Her father ran away and never came back. Her family as a whole are hardened criminals.
The Inbetweeners: The reason Jaye acts like such a JerkassLothario all the time is due to his father, who constantly insults him and his mother, and derides Jaye's lack of sexual experience.
JAG: Angelique's reason for the killings in "Déjà Vu". Her father was a Navy Lieutenant who left her and her mother behind when Saigon fell. The North Vietnamese raped and murdered her mother when they found out she had an American officer for a lover.
Law & Order: Mike Logan's temper is attributed to the beatings he received as a kid from his alcoholic mother. Lennie Briscoe's meth-addicted daughter blames all her problems on her former alcoholic dad's absence during her childhood.
Law & Order: Criminal Intent: Naturally this shows up, most famously with Goren's ex-FBI profiler mentor 's daughter who, having washed out of the FBI several times decided the next best thing was to become one of his subjects. The constant "shop talk" at home and using dad's torture tapes to test potential boyfriends right before making out also had something to do with it... Another example is Stephen Colbert's master forger who was doing his best to discredit a soon-to-be canonized priest because his mom used the guy's charity to steal his childhood.
Serial Killer: Please... with you people, it's always the mother.
Detective Tutuola: I don't want to hear how you didn't do it, it wasn't you, you were abused as a child.
Female Serial Killer: I was raped, more times than I can remember...
Detective Benson: Right, and your mother died, and your dad beat ya.
One episode actually managed to make the perp sympathetic and a bit tragic. An elderly piano teacher and his younger assistant are discovered to be molesting a young boy and evidence is found which indicates this is a pattern that they have repeated multiple times. When the detectives uncover that the assistant himself was molested by the tutor when he was a boy, they confront him about putting other children through the same nightmare. He breaks down crying and agrees to confess and testify against the older man rather than force their young victims to take the stand. As he put it, "I don't know why [my abuser] is the way he is, but I know why I am… (sobbing) I don't want [my victim] to end up a monster like me…"
Sawyer is a perhaps more artful execution of Freudian Excuse. That his father killed his mother, then himself, in front of young James stirs our sympathy. However, it was used more to explain his self-loathing after becoming a con man like the one who destroyed his family.
As of Recon, even the damned SMOKE MONSTER is claiming a Freudian Excuse. And in "Across the Sea", it's pretty well confirmed.
Given a variation with Locke who was middle aged when he met his truly monstrous parents who used him and discarded him like trash. A rare case of a hero having a Freudian Excuse for his behavior (In Locke's case, his desperate need to stay on the island and serve a purpose).
M*A*S*H: It's made pretty clear that a big part of the reason why Frank Burns is such a Jerk Ass is that his entire childhood was miserable, complete with heaping helpings of ParentalAbuse (both physically and mentally).
Medium: The pilot does go unusually far back in the cycle of abuse, thanks to Allison's ability to talk to ghosts. When questioning an imprisoned pedophile, she's accompanied by the spirit of the man who molested him as a child, and the spirit of the man who molested him as a child, and the spirit of the man who in turn molested him as a child, and so on.
Merlin: Uther is given one of these for all the atrocities he's committed in trying to wipe out magic. His excuse: He hates and fears magic because Nimueh cast a spell, at Uther's request, to give him a child. He asked her to do this even though he knew that in order to give life by magic, a life must be taken. Uther's wife died and Arthur was born.
Morgana had magic in a Kingdom that killed magic users, poisoned by Merlin, terrified by her visions of the future, drugged by her physician, and was an orphan (well, thought she was). All of this is in the first two seasons. It gets worse.
Monk's mother was very uptight and neurotic, which is probably part of why he is. To overcome OCD, it's necessary to resist the compulsions, so Monk being raised by the kind of person who encourages excessive order may have allowed the condition to develop a stranglehold on him in a way it otherwise wouldn't.
The fact that his wife was killed in a Car Bomb also made his OCD condition grow even worse, suffering a relapse that caused him to resign from the Police Force, and apparently nearly drown himself.
Although they're not villains, it's clear that at least three of the characters' traits come as a direct result of lousy parental relationships:
Murphy's competitive nature stems from her relationship with her father. In a flashback, we see him tell her point-blank that her B+ paper "should've been an A". On top of that, he worked constantly, and as such it was often very difficult for her to get his full attention. On top of THAT, Murphy reveals in one episode that her father wanted a boy. And as if all of that wasn't enough, her parents had a messy divorce plagued by frequent verbal battles which still continued whenever they encountered each other in the present.
Frank's constant need to validate himself stems from his parents, who never really hear the words that come out of his mouth. He's also one of seven children, so he constantly felt lost in the shuffle when he was young.
Jim's stuffy exterior can be attributed to his father, who told him that real men don't show their emotions. He was 10 years old at the time.
NCIS: Ari Haswari tells Gibbs his is that his father impregnated his mother, raised him badly, and killed his mother just so he could have a mole in Hamas. He gets shot straight after, by his own sister, in what ends up being her Freudian Excuse for having severe trust issues - which really isn't so much an excuse as a valid reason.
The New Normal: Jane is bitter because her husband cheated on her with a black man.
Once Upon a Time: Both Rumplestiltskin and Regina have huge Freudian Excuses. Rumpelstiltskin's low self esteem stems from being branded a coward and having his wife abandon him and his son, and his taking children from parents stems from him losing his own son after he couldn't give up his power. Regina's mother, Cora, was abusive, using magic to control her, she also killed Regina's boyfriend in front of her, and forced her to marry the king. As a result, Regina became obsessed revenge against Snow White (who told Cora about Regina and Daniel, thinking it was for the best).
Rumple's story is even worse when you learn about his father. According to a the summary given of a cut scene: When Rumple was a very young child, his father left the house claiming to be going out for water, neglecting to bring the bucket, Rumple follows, and witnesses his father being confronted by men whom he owes a significant debt to, and who he was attempting to escape from. It becomes obvious to the viewer, and the boy, that he had been trying to flee the town to get out of his debts, leaving his young son behind, alone. His father is then beaten to death while the young Rumple watches. For this, his father was branded a coward, and Rumple grew up known as the son of a coward. Makes his later fate hit harder, does it not?
Becomes even worse when it's shown what really happened to his father during the the third season. His father, having had a stressed out and work-filled childhood, tried to compensate it with a carefree adulthood. For that, he despised Rumple since the day he was born, and when give the chance did not hesitate to give him up for eternal youth. Rumpel's father would then transform, right before Rumple's very eyes, into the boy that would be known as Peter Pan.
Prison Break: It's suggested T-Bag is only a pedophile because he had been sexually abused by his father.
Subverted by Arnold Rimmer; he has numerous elements in his back-story that could be used to excuse his actions as an adult - his mother and father despised him, his brothers and schoolmates relentlessly bullied him to the point of homicidal sadism, no one liked and encouraged him and he eventually died a horrible death as a useless, unfulfilled failure - but whilst these elements are sometimes used to promote sympathy for him, they are never used to justify his snide, cowardly and hypocritical actions or utter stupidity and incompetence, much as he would like them to. Despite his constant whining about the subject, no one excuses him because of it, and in fact it's clear to everyone around him that he himself merely uses his past as an excuse not to deal with his failings, even those that can't be brushed away so easily.
Further subverted in Back To Earth: when confronted with The Creator, his reaction is not to blame him for his own character flaws, but to be pissed at the crappy childhood and life he's had.
His alternate-universe double, Ace Rimmer (what a guy!), a brave hero that causes women (and a good few men) to crush on him simply by being himself, had an equally poor childhood and is only different in that he was held back a year, letting him realize that life wasn't fair and he had to work with what he had.
Losing his Freudian Excuse actually appears to be one of Rimmer's greatest fears, as demonstrated in Back to Reality, in which he believes his lack of success can be blamed on his negligent parents, only to discover that Lister (believed to be his half-brother at this point) shared his upbringing — implied to be much better here — and became a rich, successful and famous member of the government. The realization that, in this reality, he no longer had this crutch to fall back upon was enough to drive him to attempted suicide. Which is strange because his brothers already also shared his horrible upbringing and they went on to be successful (at least until a deleted scene in season 6 implied they all had mental breakdowns in the middle of missions resulting in large body counts).
Rimmer's brothers shared his parents, yes, but Rimmer's brothers are also consistently shown to be among his most abusive tormentors in the rest of the series, doing things like burying him alive in their sandpit with only his face showing and smearing his face with jam for the ants, and tying him upside down from a tree and abandoning him. Because he doesn't have any memory of Lister having engaged in similar cruelty in that reality, it's possible that that was a contributing factor, along with the realization that in that reality, he was even more of a failure than he was in the game, and he'd also missed several opportunities to be awesomely badass in the game. He doesn't remember who he is, he shares an upbringing he doesn't remember with a man who's greater and more successful than him, and he's wasted four years of his life playing a video game in which he was playing the wrong version of Rimmer the entire time. Being told that not only is everything you thought you were a lie, but a lie many times over is quite a good reason for suicide. It is also worth noting that his reason for suicide was the most complex of the four, as befits his status as easily the most complex character on the show — Cat was no longer cool, Kryten took a single human life, and Lister believed himself to be a fundamentally evil man responsible for genocide, but Rimmer has a multilayered reason for suicide.
In the episode "Inquisitor", Rimmer successfully uses this Freudian Excuseto justify his pathetic and worthless life and avoid being completely erased from history. "Yes, I admit I'm nothing. But from what I started with, nothing is up."
Revenge: Victoria Grayson grew up with a mother, Marion, who belittled and undermined her, manipulated her into taking the blame for Marion killing her boyfriend, and threw her out of the house for being molested. Explains the cold and calculating Hamptonite Victoria eventually becomes, this cunning which she uses to humiliate and exact her vengeance on Marion during a Thanksgiving dinner.
In episode 5, Ken 'Hutch' Hutchinson. He lost his wife to the militia, and that's why he is so obsessed with killing militia officers, even if it results in civilian casualties.
Episode 10 reveals that Sebastian Monroe lost his entire family years before the blackout when they got killed in a car accident on the way to see a Harry Potter movie. That was only the start of a number of traumatizing events that turned him into a Woobie Destroyer Of Worlds.
Episode 13 has Tom Neville essentially claiming to his son Jason that he wanted Jason to not be a weakling, like Tom was as a child. It's ambiguous as to whether Tom Neville's childhood is really like that. Regardless, Jason declares that he doesn't believe him, because he knows that his father can be such a consummate liar.
Robin Hood: In this BBC show, Alan A'Dale gives one of these to Robin Hood when Robin finds out about Alan being The Mole:
Alan: That's easy for you to say though, isn't it? Yeah? You get the glory, you get the girl, everyone loves you. Then when the King comes back, you'll have lands, property, a wife - everything. What will I have? You're always in the sun, Robin and I'm always in the shade.
Parodied and subverted in one episode where Jordan declared several times that "My parents were mean to me" when she was bugged for the hateful things she did, and eventually admitted that they were actually very nice and supportive.
But played straighter with Dr. Cox's family, as his father was a violent, abusive alcoholic while his mother just didn't do anything to stop his father.
Later subverted again with the manipulative intern Katie who justifies her actions to Carla with "My dad died when I was a baby, and my mother was a heavy drinker. I've had to do everything myself my entire life." Carla's response? "Awww...HEARD IT! Me? Dead mom. JD? Dead dad. Elliot? Emotionally abusive parents. Dr Cox? Emotionally and physically abusive dead parents who he may have killed. No one's really sure."
Though Carla and J.D. lost their supportive parents when they were well into adulthood, giving them little claim to this trope.
Lionel Luthor's refusal to show his son any affection, or leave his sense of self-worth intact is a major part of Lex's slide into villainy. However, as the show frequently points out, people are defined, not by what happened to them, but by the choices they make. Emotional abuse left Lex damaged, but he still could have pulled back. Lionel is himself the product of abuse, having received severe physical abuse as the hands of his own father, Lachlan. Both cases end with the son ultimately murdering the father.
Father Issues were also a reason some of the Freaks of the Week turned bad when most other teenagers just would've been like "Wicked cool, I got super powers!" In particular, the kid from "Leech."
A Villain of the Week devoted his life into killing meteor freaks because one of them killed his father. It's been implied (if not outright stated) since then that the Kryptonite may actually be conducive to violent behavior.
Painfully lampshaded in Beast:
Jimmy: Why did you do it? Come on. Every killer's got a sob story. You know, I hear that an unhappy childhood, that's...that's pretty popular.
Bela was sexually abused by her father and this gave her the motivation to make her deal with the devil. But as she tried to make the boys' life a misery instead of going to them for help like she should have done (which she realizes now), she gets torn apart by the hellhounds instead of being redeemed. Which has the oddly powerful effect of making viewers who hated her before feel sorry for her instead.
Subverted in that when Dean finds out about the deal and calls her on it, she just smirks and says that her parents were nice, loving people, and she killed them anyway. Evidently, Bela wasn't one for sympathy.
Terra Nova: Lucas Taylor is working with a group of Corrupt Corporate Executives to make the portal go both ways so that they can destroy Terra Nova and rape the alternate past earth where the colony is located. Why? Because he wants to get back at his father for failing to save his mother in Somalia when he was a kid.
Logan isn't exactly a villain, but he does have a home life worthy of one: his famous father sleeps around and is physically abusive, his mother commits suicide, and his sister is an emotionally void, aspiring (and failing) actress whose primary motivation in life is to improve her career without working at all.
For that matter, Logan's father—a murderer himself—claims that it was his father's abuse which made him who he is.
Even more blatantly, Cassidy Casablancas is a psychotic mass-murdering teenager due largely to the physical and emotional abuse of his father and older brother.
The show also has a Lampshade Hanging. In the first-season episode "Drinking the Kool-Aid," a boy joins a cult, and his rich parents ask Mr. Mars why he'd go when he was provided for. Mr. Mars says that it's often rich kids who leave, and the boy's father sighs (paraphrasing): "Yes, I know what you're thinking. Spoiled rich kid, no material need denied, no spiritual need fulfilled. That's not us."
Subverted Trope by Meg, whose parents are crazy fundies, but is still a very nice person.
In the same episodes where we find out about Meg's parents, Sheriff Lamb also indicates his dad abused him, and combines it with a Pet the Dog moment.
Victorious: Jade has the excuse that her father doesn't approve of her choice of potential career and is a staid businessman.
The West Wing: President Jed Bartlet had a terrible relationship with his father, to the point where he is accused of still trying to please his father (or, as Toby puts it, "to get him to stop hitting [you]") even as leader of the free world.
Wings: Joe blames his mother abandoning him as a child for him growing up to be a tightass. In another episode Brian discovers the letters he wrote to Captain Kangaroo that he wrote when they were kids and that Joe was supposed to send and then expounds an elaborate theory about how believing he had been ignored by his hero eventually led to all his failures in life as an adult. Joe is skeptical.
The X-Files: Subverted Trope in the episode, "Clyde Bruckman's Final Repose". The FBI is tracking a serial killer with a penchant for purported psychics. It turns out the killer was actually trying to discover the Freudian Excuse behind his violent tendencies and killed the psychics when they failed to divine a satisfactory answer. Ultimately, he crosses paths with the titular Mr. Bruckman who is genuinely clairvoyant and we get the following exchange:
Killer: So there's something I've been wanting to ask you for some time now. You've seen the things I do in the past as well as in the future.
Clyde Bruckman: They're terrible things.
Killer: I know they are. So, tell me, please, why have I done them?
Clyde Bruckman: Don't you understand yet, son? Don't you get it?
(The killer shakes his head and shrugs.)
Clyde Bruckman: You do the things you do because you're a homicidal maniac.
(The killer thinks about it for a moment and smiles.)
Killer: That... that does explain a lot, doesn't it? It's all starting to make sense now.