Moral Event Horizon in Whoniverse.
Doctor Who
- "The Rescue": Bennett wipes out the Dido people purely to cover up his earlier murder.
- Word of God confirms that in "The Time Meddler", the Vikings did, in fact, rape Edith.
- In "The Mutants", The Marshal attempts to murder his own soldiers without showing remorse.
- Davros' was probably in his very first appearance purely by creating the Daleks to be the ultimate genocide machine, making him responsible for untold death and destruction, purely to let him dominate the universe. If not then, then in "Revelation of the Daleks" when he turns comatose patients at Tranquil Repose into food.
- In "The Pirate Planet", the fact that the pirates use a special weapon to crush and shrink planets - most likely killing billions - and then keep them as Pirate Booty is beyond despicable. Thus, it's completely understandable that the Doctor would absolutely blow his top at this revelation.
- "The Power of Kroll": Thawn plotting to give the swampies faulty guns so that he has an excuse to wipe them out in "self-defence" in order to expand his business, then trying to launch a missile strike to destroy them and murdering Dugeen when he tries to stop him.
- Any sympathy for Rorvik and his crew in "Warrior's Gate" goes out the window when it's revealed that they're slavers.
- One could argue "Logopolis" for The Master when he was portrayed by Anthony Ainley. Yes before he had manipulated, threatened, and killed lots and lots of people, but compared to the number of people The Doctor had manipulated, threatened, and killed, they were basically even, and before Delgado died he was even supposed to have a Death Equals Redemption plot. And then, when he gets a proper new body again, he destroys one-quarter of the universe, including the home planet of one of the Doctor's companions (though admittedly that was an accident he caused by going on a killing spree). And the new body he got is the corpse of said companion's father. After that, there was really no going back for that specific incarnation.
- In "The Two Doctors": Shockeye was already a creep to being with, but he casually murders Oscar after eating him out of house and home.
- When the Borad of "Timelash" unveils his plan: having incited war between the Karfelons and Bandrils by refusing to give grain supplies to the Bandrils, he intends to let the Karfelons be exterminated in the war, then leave the Bandrils to starve while he repopulates Karfel by mating with Peri.
- In "Dragonfire", Kane has the tourists, passers-through, and residents herded into a spacecraft and blows it to Kingdom Come.
- In "The Curse of Fenric", Millington locks two men up in a cellar, leaving them to their Haemovorey death.
- In "Dalek", Van Statten is just arrogant and ignorant... until he decides to keep the Doctor as a specimen, for torturing. And later he dismisses his soldiers as "dispensable" when the Dalek massacres them. After that, there's no excuse.
- In "Turn Left", fortune-teller and (indirectly Trickster, her boss) makes Donna turn right, which created a parallel world, where Doctor is dead, multiple catastrophes and disasters are not prevented, and it ended destruction of reality itself. Knowing that Trickster is a being feeding on chaos, it really one for them.
- Miss Mercy Hartigan from "The Next Doctor" may have been a more sympathetic character particularly with her implied Rape As Back Story past. However, when she enslaves children, whatever sympathy one may have had for her vanishes. Moreover, when she decides that the children are disposable, you're actively rooting for her defeat. Interestingly, RTD later stated that, in hindsight, he felt that he should have given her a chance for Redemption Equals Death in the climax - specifically by having her What Have I Become? not result in her killing herself in horror, but for the Doctor to prompt her to transport the Cyberking away herself before it explodes (if only to avoid the Doctor's Deus ex Machina-ish solution to the problem). By the time Davies thought of this solution, however, it was too late to implement it and we're left with what we got.
- In "The Waters of Mars", the Tenth Doctor decides to save Adelaide without respect to time laws and possible catastrophes. He does it very smugly, not at all caring about Adelaide's worries when she pulls What the Hell, Hero? on him. Only her suicide leads him to remorse and averts it. Keep in mind that it was a fixed point. The whole universe could have been destroyed.
- "The End of Time":
- Why is Master insane? Because Rassilon put the signal of drumming into his head to save himself and Gallifrey!
- And, of course, Rassilon's battle cry: "For victory! FOR GALLIFREY! FOR THE END! OF TIME! ITSELF!".
- the Time Lords themselves have gone off the deep end as they are willing to destroy the fabric of space and time to escape their own demise.
- House of "The Doctor's Wife" tortures Amy and Rory by warping their perceptions, causing Amy to perceive Rory Dying Alone because of her, for its own amusement.
- "Dinosaurs on a Spaceship": Solomon crossed it either by having thousands of Silurians Thrown Out the Airlock because he can't sell them or by taking Nefertiti as a slave with strong implications that he plans to rape her.
- In "The Crimson Horror", Mrs. Gillyflower blinds her daughter with Red Leech venom, and horrifically kills several people with it in preparation for wiping out most of humanity with it.
- "The Name of the Doctor" reveals that one incarnation of the Doctor (played by John Hurt) did something so monstrous that the other incarnations (including those who have committed multiple genocides and doomed their own species,) have disowned him, stripped him of the name "Doctor" and tried to forget he ever existed. However, "The Day of the Doctor" ends up portraying him more sympathetically as a war-torn Well-Intentioned Extremist who, with the help of the Tenth and Eleventh (and the other ten) Doctors, eventually averts this and ends the episode content with the possibility of having failed in doing the right thing as opposed to the guilt of having succeeded in doing the wrong thing.
- The same episode has the Great Intelligence's MEH. Out of spite for its previous defeats at the Doctor's hands, it enters his time stream intending to undo all his victories, thus dooming billions of people, and undo every friendship he ever had purely to hurt him.
- Invoked by Moffat in an interview
, who is well aware of Missy's Draco in Leather Pants tendencies. In "Death in Heaven", he had her kill off fan-favorite Osgood to remind us that just because she's a woman now the Master isn't any less of a psycho than she's always been. - Whoever made the poor Doctor, the man who saved Gallifrey, go through more than 4 billion years of Mind Rape in his confession dial in "Heaven Sent" — possibly solely to extract information about the Hybrid from him — has definitely crossed this. It is heavily implied to be Rassilon himself, and if so, he gets off easy by being exiled.
- In the opinion of the Eighth Doctor, the point where he decided he would be willing to destroy the Always Chaotic Evil Daleks is when the Dalek Time Controller engineered the second Dalek invasion of Earth, planning to turn it into a plague planet and pilot it around the Universe to wipe out all other life.
- "Thin Ice"'s Lord Sutcliffe feeds innocent people, including children, to the massive creature he has chained beneath the ice in order to produce material for his factory.
- In "Face the Raven", The Twelfth Doctor crosses this when he threatens to destroy Ashildr/Me as well as the Trap Street and its residents with the Daleks, Cybermen, and UNIT if she is unable to save Clara.
- Donna was absolutely right that Doctor needs a companion as a Morality Chain. What happens to the Doctor when a companion is killed thanks to a Senseless Sacrifice in "Face the Raven" and he is immediately imprisoned in a torture chamber, all alone save for the Monster of the Week, in "Heaven Sent"? He is ultimately Driven to Madness and his torment becomes a Self-Inflicted Hell before he manages to escape. Due to these mounting horrors and absolutely no one around him caring about or even realizing what he's endured, in "Hell Bent" the Doctor becomes The Unfettered Woobie, Destroyer of Worlds willing to risk the destruction of the universe just to save Clara from her death, again changing a fixed moment in time. The moment of truth comes when he intends to Mind Rape Clara to protect her from his enemies. Will he go through with it and lose all hope of redemption? As it turns out, no. Even after all his torment, none of it just, he not only repents for going too far but accepts losing her for good and being Mind Raped himself and thus losing his memories of her as just punishment on his way to returning to his best self.
- Tzim-Sha, already a sadistic Serial Killer in his first appearance, crosses it with his return in "The Battle of Ranskoor Av Kolos" by eradicating the populations of five planets with his new super-weapon purely to stoke his god complex.
- Zellin and Rakaya of "Can You Hear Me?" crossed it in backstory. Purely For the Evulz, they manipulated the inhabitants of two planets into going to war with each other. Both races were driven to the brink of extinction before realising their deception.
- "The Haunting of Villa Diodati": Ashad willingly cyber-converted himself to join the Cybermen's genocidal war on all non-cyber lifeforms. When his children refused to do the same, he slit their throats.
- "The Timeless Children": Tecteun experimented on the Timeless Child after discovering its regenerative abilities, effectively killing it over and over again in order to unlock the secret of regeneration. If not then, then engineering the destruction of the universe would certainly do it.
Torchwood
- Gray burying Jack alive for almost 2000 years. He was planning on eternity. Even John protests when he finds out.
- In Torchwood: Children of Earth, The 456 when we find out what they do to the children.
- Prime Minister Green, when he orders Frobisher, his most loyal ally, to sacrifice his own children to the 456.
- "I'm sorry John. I'm really very sorry...and I'm really very busy."
- The ministers of the government choosing to protect their own children no matter what and then taken even further when they all agree to sacrifice the poor and disadvantaged children to save the respectable middle-class ones. Though they still don't end being as unsympathetic as Green, since they at least admit to their bias and aren't exactly happy about their actions.
- Prime Minister Green, when he orders Frobisher, his most loyal ally, to sacrifice his own children to the 456.
- In Torchwood: Miracle Day, Colin Maloney, the guy running one of the overflow camps in episode 5. He cuts corners to save money and leaving treatable people in pain simply because they don't have insurance is bad enough, but that's only enough to classify him as a corrupt Obstructive Bureaucrat. He shoots Dr. Juarez to keep her from ratting him out, and then sticking her in an incinerator with the Category 1s. Then Rex comes in and gets caught, threatening to do the same if arrested, so Maloney tries to jam a pen in his heart. Then he tries to kill Esther, but thankfully she got away thanks to his accomplice finally remembering his conscience.
Doctor Who Magazine comics
- Jodafra from the Eighth Doctor comics is initially introduced as a roguish trickster who is nowhere near as bad as some of his relatives. Then in his second appearance he tries to feed a bunch of little children to a monster in exchange for mystic power and, when his own niece objects to this, gives her a No-Holds-Barred Beatdown with his walking stick that leaves the Doctor, who's seen some pretty ugly stuff, shocked when he sees the state of her. Unfortunately, thanks to an Aborted Arc, we never got to see him get his comeuppance until he resurfaced against the Twelfth Doctor, having enslaving the crew of a time machine.
