"Moral Event Horizon", or "MEH" for short, refers to an action by a villain that is so evil that it usually eliminates audience sympathy for the villain and makes it clear that they are unrepentantly evil and will not be redeemed, unless if they themselves are offended by the actions of another villain, or admit themselves that they are beyond redemption.
The scientific fact that nothing can escape a black hole is referred to as the boundary of the region from which no escape is possible and is known as the event horizon, hence the term Moral Event Horizon. A villain who crosses the horizon, or enters the black hole, has no hope of escaping except under extremely rare, extraordinary circumstances.
All Complete Monsters are by definition beyond the Moral Event Horizon. However, crossing the Moral Event Horizon does not necessarily make a villain a true Complete Monster, it only means that they are irredeemably evil. Some villains have or almost crossed the Moral Event Horizon, or done something despicable enough to make the fans believe they did so, only to later redeem completely or partially. A strong example of a Complete Monster would be either a villain who (in addition to having no adequate Freudian Excuse) commits multiple especially heinous Moral Event Horizon-worthy deeds, or a villain who is exceptionally brutal and evil in nature when crossing the MEH.
However, some villains of this who crossed MEH would die in disgrace and become Damned Souls.
By definition, a character can only cross the Moral Event Horizon once; however, it is possible for a villain to have more than one event as a potential Moral Event Horizon, such as the various adaptations of the Joker and Teridax. Other villains have more than a potential and often leave an impact on the public that they do wicked things all the time and commit Moral Event Horizon acts like a hobby, such as Zalgo, Pepper Satanica, Gan, and Ernie the Giant Chicken. These characters are almost invariably Complete Monsters.
IMPORTANT NOTE: Two things that should not added on the list of MEH below: Fanon examples, as this would confuse the reader. Certain flawed actions that done by characters that confirmed not evil nor antagonistic (Franny Robinson grounded her son Wilbur until his death for his mess that also led Lewis present in the future or SpongeBob's ungrateful acts on Gary in spite of his heroic acts for saving him from Puffy Fluffy for examples) won't be ever counted as act of MEH if the said actions not officially put them to the dark side or merely portrayed them as flawed hero.
- Gan: Gan is a creature who thrives on evil and evil deeds; Thus, he has many possible candidates.
- He murders his brother, Aslan
- He crosses it again later on when he enslaves the entire Macroverse, devouring many innocent planets and enslaving way over a trillion people.
- To ensure his place as ruler over the Macroverse, Gan had planned to kill off his other brothers as well, At one point, attempts to plunge both Shardikk and his infant son into a volcano, until Maturin shows up and saves them.
- In one particularly gruesome overtaking, Gan kidnapped a number of children, and either had them slowly dismembered and eaten, turned into Arachnids using dark magic or returned them to their planet has horrible parodies of themselves; he had dismembered them and sown their body parts together at random. As distraught parents wept and struggled to identify their children, the Spider continued to taunt them with a telepathic recording of himself singing nursery rhymes.
- Jack Savage: He crosses it when he blows up the US Capitol and all inside simply to make Maturin look bad to the public.
- He crosses it again when he gasses Judy Hopps with a gaseous form of Night Howlers and forces her to attack Nick Wilde.
- Jeff (Pasta Monsters): Blows up a children's hospital.
- He crosses it again when he throws an already injured Smile under a bus so that the driver would pay for his injuries.
- He crosses it again later when he tricks BEN into raping Ms. P.
- He crosses it yet again when he nonchalantly murders a little boy who was riding his bike.
- There's also a scene in which Smile casually walks into the living room and greets Jeff. Jeff replies by shooting Smile in the face.
- In "Proxyland", he crossed this line he when enslaves the citizens of the U.S.A and exiles Ms. P from the Human World. Even worse was when he prepared to destroy all of the U.S.A and begin total world domination.
- Earlier, he threatened to nuke Lara's home (including her little brother, Isaac,) if she didn't join his regime.
- Jeff's overall most monstrous action in the special, if not the show, is when Tails Doll tries to talk Jeff out of a destroying the U.S.A and later dominating the world, Jeff murders him in cold-blood. The murder of Tails Doll, who is an 8 year old at oldest, is so cruel that it causes BEN to pull a Heel–Face Turn, shows that one of the more villainous members of Jeff's cabinet (Enderman) has some standards, and shakes the resolve of a third member (Eyeless Jack).
- BEN (Pasta Monsters): He crosses it in "The 120 Days of Soda", where he kidnaps, and starves children in his weed factory, forcing them to make weed for his small company.
- Zalgo (Pasta Monsters): Zalgo, being evil incarnate and the main antagonist of the series, has had many potential MEH crossings over many storylines.
- After his brutal betrayal of the Dark World, Zalgo slaughtered and enslaved all lands, forcing all inhabitants into hard labor. He also drained the water and torched the crops of all the lands, causing the population to starve, even though the entire Monster race were nothing but loyal to him.
- Over a course of two decades, Zalgo would subject his young son, Slenderman, to horrific abuse, both of the physical and psychological kind. To detail, not long after he is born, Zalgo, in order to put his new initiation to the test, strips his terrified son naked and then dumps him into a pit of hellfire, causing him nightmarish agony and searing his skin black and giving him magical tentacles (which were actually the child's rotten flesh.) From this point onwards and for years on for every day of Slenderman's life, Zalgo puts the child through brutal life-or-death training routines, where the slightest deviation means beatings and torture and the boy nearly dies several times in the brutal courses. One exemplary instance of this was when Zalgo forced the boy to fight a hulking demon henchman whilst he was still a young child, leading to him to be beaten senseless in his ineffectual attempt to attack the demon. In the midst of this routine, the young, inquisitive Slenderman, sneaks away from the battle in tears of pain, and stares out into the outside world (which should be noted Zalgo has never let Slenderman venture into). Zalgo sees him gazing longingly outside and seems to comfort him... before grabbing Slenderman by the neck and tossing him to the brutish demon and ordering that Slenderman be brutalized for his brief distraction, watching without a hint of emotion as the demon brutally beats the young boy.
- It is eventually revealed Zalgo was the one who caused Jeff to go insane. If this wasn't enough, after finding out Jeff had begun to miss his old life and family, Zalgo begins taunting Jeff, stating that's Zalgo possesses the souls of Jeff's parents and his beloved brother, Liu (in the form of a blue box). Zalgo states in order to get them back along with his old life, Zalgo has Jeff complete of dangerous obstacles around the Pit in order to destroy an object known as "The Oculus". After Jeff destroys the object, he demands the souls that Zalgo promised. However, in a surprise twist, Zalgo reveals that the object he told Jeff to destroy was actually the souls of Jeff's own family and not the Oculus (which Zalgo had already destroyed decades ago). When Jeff asks Zalgo why he did this, Zalgo states he did it to teach Jeff a lesson that no matter how hard he tries, Jeff will never get his family back, nor the innocent life he used to live. Zalgo then teleports away, leaving Jeff in a state of emotional pain and anger.
- When he discovered that one of his royal advisers warned a nearby village that Zalgo's minions were going to massacre them, Zalgo ordered his torturers to cut his head off. While the head of the adviser rolled on the floor of his office, a great smile appeared on Zalgo's face, while he seemed amused by the horrific scene of blood and flesh spreading in the room. And soon after killed the adviser, he ordered the death of ALL members of the village who were warned by the adviser.
- Forced all mothers in the Dark World to kill their firstborn sons.
- After finding out she had stolen one of his most valuable amulets, Zalgo attempts to burn Hoppo-chan, a 4 years old Abyssal girl, to death by drowning her in the magma river of the Pit.
- In "Just a Slave", the episode chronicles one of Zalgo's minions who is given the task of finding more planets for Zalgo to conquer. The demon eventually finds a planet called Scard 567 and investigates it for weaknesses. Along the way, he meets a little alien girl, named Plinky, who shows him the kindness and compassion Zalgo never showed. She spends the day with him, buying him ice cream, showing him how the ride a bike, and giving him a locket. She even gives him a name, "Flame-Head". Back in the Pit, Flame-Head shows Zalgo the planet that he was on, much to his delight. However, when asked to show him the coordinates so he can destroy it, Flame-Head remembers the time he spent with Plinky and removes all memory of the planet from his mind and calling himself Flame-Head. Beyond furious, Zalgo angrily proclaims "the weak have no place with Zalgo", and vaporizes the demon with his laser eyes. During his final moments, Flame-Head pulls out the picture that Plinky had taken of them and sadly says, "I am Flame-Head" one last time before burning up completely. Even worse, it is implied Zalgo found the coordinates of Scarab 567 anyway and destroyed it, including possibly Plinky.
- Mancala: Kills Laughing Jack and tries to kill Jeff's five-year-old daughter, Sally.
- Enderman (Pasta Monsters): Crosses it when he turns into a demonic dragon, destroys a sacred forest, turns it's inhabitants into mindless slaves and tries to kill Jeff and his friends in "The Chain Mail"
- Enderman's attempted murder of Slenderman in "Stop in the Name of Hate" does it for some. It's not really the worst behavior he's ever demonstrated, but the rapt, gleefully anticipatory look on his face as he watches the life go out of Slenderman's eyes — with accompanying flatline beep — is creepy on a personal level that he doesn't often reach.
- The Rake (Pastamonsters): The Rake has always been a sadistic, dog-kicking machine, but he finally crossed the line when he knowingly gave both Enderman, Jeff, and BEN a severe case of leprosy in "African American Friday" after feeding the three a home-cooked chicken pot pie without gloves or a hair-net. It's even worse when you realize the Rake gave BEN, a ten-year-old, a flesh-eating skin disease, as well as the fact he was willing to do it the Enderman as well.
- BOB (Pastamonsters): He crosses it when becomes mayor of the Dark World, forcing every mother to surrender their babies to him for food, and later he kills the SUICIDEMOUSE.EXE for no reason. All this to prove how evil he is.
- X (Pastamonsters): While X has always been a truly evil monster who destroyed entire civilizations for laughs, he ultimately crossed it when he murdered Lara's five-year-old brother, Isaac, simply to get back at the Proxies. He later taunts her about Isaac's death by saying "Hello, Lara. How's the little brother?"
- X crosses it again in "Jeff and the Beanstalk". Andra and Damian respectfully introduces herself, her brother and their uncle to X. She tells X that their planet is under attack by Zalgo's minions (unaware that X is a minion of Zalgo himself) and they need reinforcements, and they ask only time enough to repair their vessel. Afterwards, X pretends to have sympathy for the brother and sister's plight before he has their ship confiscated and has them put in irons to be taken to the Pit to work in labor mines for the rest of their lives. Their uncle futilely tries to reason with X, but X cruelly just crushes the old man. And X did all this simply because he could. Even Jeff was shocked X had no problem in enslaving two teenagers already devastated by a war that Zalgo caused.
- President Bush: Once he is elected president (by poisoning anyone who posed a threat to campaign), he turns the United States into a corrupt patriarchy with crimes such as genocide, slavery, and pillaging against any nation that opposes him, torture and ill-treatment of detained people in his regime, permission to abuse of power in the police forces, excessive punishments for minor infractions, animal cruelty, legal slavery, and the fact that he welcomes the Proxies and other Monsters from across the Dark World and provides them with areas that are still fully occupied, entrusting the new arrivals to wipe the populaces from the country as long as he gets paid by Slenderman. Even scarier is knowing that all this is a routine occurrence under Bush's rule. Bush managed to cross the line between keeping his corrupt regime and outright sadism.
- Laughing Jack (Pastamonsters): In "Everything Boils Over Later", when Laughing Jack gets Ebola after accidentally going to Africa, he asks Jeff and BEN to get him the cure, but they deny because they simply don't know where it is. The next day, Laughing Jack gives them his Ebola by spitting in their drinks in order to force them to get the cure. BEN even claims Laughing Jack is going to Hell when he dies.
- If that wasn't enough, he certainly crossed it when he was going to save a woman who was trapped in her car while it was sinking but he killed the woman by letting go of the car.... After she announced that she needed to grab her baby. Laughing Jack managed to top two MEHs by killing a woman and baby because he only planned to save the mother for sex. What makes this worse is that when he spoke of the how he got a hernia from the act, he lied by arrogantly regarding the murder and infanticide as an act heroism.
- Colby Smith crossed the Moral Event Horizon when he went and told rumors about Jimmy Hopkins that weren't true. He also crossed it when he presumably killed Caden Quinn with Colton's help.
- Colton Williams crossed the Moral Event Horizon when he hit on and sexually harassed Lola Lombardi, framed someone else for it in front of Johnny Vincent, and sucked up to him only to manipulate him, and when he secretly sold pornographic magazines that he got from the black market. He also crossed it when he possibly killed Caden Quinn.
- Corey Evans crossed the Moral Event Horizon when he almost choked out and killed Constantinos Brakus. There’s also a possibility that he helped Colton and Colby kill Caden Quinn.
- Alex Norcroft crossed the Moral Event Horizon when he threatened to kill a boy in the bathroom.
- Kiley Winselton crossed the Moral Event Horizon when she said she was planning to do something similar to the Nazis in WW2.
- Mr. Hill crossed the Moral Event Horizon when he presumably killed his own father, Hamilton Hill, as well as one of his former students.
- Mr. Pearson crossed the Moral Event Horizon when he was sent to jail for leaving his own men to die when he was in the military. He also crossed it when he killed his cellmate in prison and when he turned a bunch of other teachers into bullies.
Margra Batto And Kyra Verbeten
- Pepper Satanica: Severely crossed it when she ruthlessly killed her twin sister, Kiota Angelica.
- She Crossed it again when she Destroyed Spyro Doomfire's Home Planet.
- She crossed it the third time when she stole Kiota's cross Necklace and turned it into a black diamond.
The Last Jedi
- Ernie the Giant Chicken (The Last Jedi): Ernie, being evil personified, is easily one of the most depraved villains in the entire story. There is a strong debate to mention what is the most absolutely monstrous thing Ernie has ever done. The list of examples are down below.
- In his time before being emperor, he was defeated via imprisonment in a black, tree-like crystal. However, he still was able to commit evil acts within the prison using the protruding spikes the crystals could create. He was responsible for eliminating all the beautiful, mythical creatures that ever existed in the Crystal Empire, causing them nightmarish agony while the oil created by the crystals destroyed their food, homes, and devoured them alive. Later he continues the random killing (including more homes and innocent ponies). When the return of Ernie occurs, he becomes even worse: he forces the then Jedi Knight, Peter Griffin, to watch helplessly as he began destroying the Crystal Empire and slaughtering the Crystal Ponies with a sadistic glee.
- When Ernie makes his return to power, he manipulates the genuinely good Jedi, Chris Griffin, into leading the mass extinction of the Jedi Order. As emperor, Ernie destroys Chris' home planet, the Jedi Temple, and many other beautiful forests and planets, all while laughing maniacally. He also kidnapped Chris' girlfriend, Sunset Shimmer, and forced Chris to kill her. He then made Princess Celestia, Princess Luna, Princess Twilight Sparkle, and Chris' family die as old slaves deprived of adequate food and water. Afterwards, he imprisoned Chris' closest friends and enslaved them for years (and perhaps decades) and sentenced them to forced labor while depriving them as well as all Jedi of health, food, and water. Something which he would repeat for over trillions of people and lands for thousands of years. Worse, the slaves of his government are punished terribly and sometimes executed, impaled or crucified, such in the case of the Wookies. And as if that was not enough, he also plundered the resources of trillions of other planets. Ernie also caused galactic-level space wars as a hobby and had many races slaughtered to secure his power, or simply because their pain and agony amuses him.
- Another easy crossing for Ernie was in "Chris and The Fire Demon". Years ago, Ernie had attacked and decimated the land of a respected Jedi Master. Even as the villain decimated all his fellow Jedi and loyal subjects, the man fought against Ernie. As punishment, Ernie encased the man in an unbreakable field of Force Lightning and forced him to watch as he slaughtered everyone he loved and destroyed his kingdom, finally placing him within the depths of a mountain, refusing to grant him a warrior's death.
- Blackmail is a routinary occurrence for him, as well as one of his most despicable actions. Good examples of this are episodes "XLIV" and "L". Similarly, both episodes end up with disturbing implications.
- Atrocities are a daily occurrence since Ernie's rule, as he welcomes wanted gangsters, bounty hunters, and intergalactic criminals from across the galaxy and provides them with planets that are still fully occupied, entrusting the new arrivals to wipe the populaces from the galaxy. Even scarier is knowing that this is a routine occurrence under Ernie's rule.
- In "Seeing the Light", an entire village of alien children are kidnapped and forced into a violent frenzy against everything around them. However, it's never specifically stated that this was on Ernie's orders. The episode largely deals with coming to terms with Ernie's effects on the universe. It is also shown the slaver of the children was one of Ernie's personal Royal Guards, so it's a safe bet that he is affiliated with the heinous act.
- In "Seeing The Light", he also nonchalantly kills Joe Swanson along with an entire army of rebels. Arguably worse is that Ernie had intended to slaughter all of Joe's daughters, and would have had their father not distracted him.
- In Season 5, one of his most monstrous acts was when he dragged Chris out of the last time portal and destroyed it, taunted him while he was in a violent rage, and turned the innocent little Ewoks that led him to the portal into monsters so Chris could to have something to kill.
- In the penultimate episode, he forces his daughter, Lara, to fight Chris and eventually corrupts her body, putting her in a state where she is aware of her actions in her corrupted form. And to make this worse, he had just met her and is quickly made aware of Chris' and her feelings for each other.
- In the final episode, Ernie crosses the line once again by forcing his possessed daughter, Lara, to kill Chris. When the rebels arrive to help Chris, Ernie tells his men that whoever kills Fluttershy will get their own planet, knowing how much Fluttershy means to Chris. Ernie tortures Lara to near-death with Force Lightning and is highly amused when Chris gets in the way of the blasts to save Lara. When Ernie hears that Lara has been "adopted" as a surrogate daughter by Chris' allies, he promises to kill them too, and orders Sideshow Bob to kill the Cutie Mark Crusaders (who are all children). When Chris arrives for the final battle, Ernie states that after he kills him, he will destroy every planet Chris has committed good acts in so no one will be able to spread tales of his heroics. And finally, Ernie manages to kill Quagmire before finally being ended by Chris'.
- Sideshow Bob (The Last Jedi): Sideshow Bob is perhaps the vilest villain in the entire series, next to Ernie. Much like Ernie, Sideshow Bob has many potential crossings
- He assisted Ernie in causing the extinction of the Jedi, personally killing any Jedi in sight, including a youngling who was attempting to defend the Equestrian Princesses.
- During Ernie's rule, Sideshow Bob made a nasty habit of torturing and murdering trillions of innocents across the galaxy. He was responsible for sending entire races to a life of slavery and made a habit of destroying their homes and villages, typically along with the inhabitants. He also ordered many planets to be destroyed to ensure no rebellions would rise.
- In "100 Years Have Passed", an entire village of people are massacred by Clone Equines. Afterwards, the Clone Equines attempt to murder a little girl, her mother, and her newborn baby before they are rescued by Chris. Seeing as the Clone Equines are led by Sideshow Bob on the field, it's a safe bet that Bob is affiliated with the heinous act.
- Sideshow Bob later crosses it yet again when he and his squad casually massacre an entire village (consisting of innocent men, women, and children) just to draw out Chris. This becomes even worse when it's later revealed Sideshow Bob regularly commits similar evil acts, mostly for pleasure.
- Darth Griffin: Crosses it when he killed the Jedi younglings.
- The Cult Leader: She crosses it when she brutally tortures her daughters from childhood, turning them into sentient weapons.
- Imperial Royal Guard (The Last Jedi): He crosses it when he slaughtered a village, kidnapped its children so that he could, well, use them as child soldiers for the Chicken Empire. When Chris and Lara came to their rescue, he uses mind control to make them attack Chris, knowing he'd be unwilling to fight innocent people against their will. And then he tried to torture and kill Lara with several thousand volts of electricity.
- In fact, anyone who ever worked with Ernie is a potential candidate for this trope. For example: In "Seeing The Light", when extraterrestrial outlaws, Da-Bomb!, Deathblow, and Gentle Jim arrived in planet Yavin 3, because they had been banished from their homeworld for their crimes, they are assigned by Ernie's royal guards to a residence in a populated town full of innocent people, with the view monitor explicitly focusing on the children. At first, they are confused because it's occupied, then the greeter indignantly asks if it will be a problem, and Gentle Jim sports a devilish look on his face and saying "No... no problem." Right after that, he happily agrees to the assignment. Later, Chris' gang arrive at the same village, only to find the three criminals had already slaughtered and destroyed the inhabitants along with all their homes. The episode even brings special attention to a doll among the wreckage that belongs to the children as seen in the previously mentioned monitor, showing the criminals spared no children during the attack.