Moral Event Horizon in The Walking Dead Television Universe.
The Walking Dead (2010)
- Ed Peletier was certain nobody's favorite character, constantly abusing Carol and Sophia just to show his dominance. Nobody was sad when he was the first of the group to be killed off when the camp was invaded by walkers and he was off sulking in his tent because Shane had beaten the shit of out him earlier in the day. However, his Moral Event Horizon moment doesn't get revealed until the Season 2 premiere when Carol states that he "looked" at his own daughter, suggesting he was either planning to, or already had, sexually abuse her as well.
- Shane's could either be kneecapping Otis to distract the zombies in "Save the Last One", attempting to kill Rick outright in "18 Miles Out", or brutally murdering Randall and trying to disguise it as self-defense, but he definitely crosses it when he tries to murder Rick for the third time in "Better Angels".
- The Governor's is even harder to nail down, but he definitely crosses it in the mid-season finale of Season 4 when he responds to an offer to share the prison and live together peacefully by brutally beheading Hershel in front of his friends and daughters. Word of God has said they considered this such a huge example that they knew there was no way the Governor was getting out of that episode alive.
- Lizzie Samuels crosses the MEH when she murders her sister in order to prove humanity within walkers still exists, and then planned to do the same thing to Judith.
- The Claimers cross it when they attempt to kill Daryl and Rick and rape Carl and Michonne.
- Nicholas passes it when he lures Glenn into the woods in an attempt to kill him out of jealousy and rage even after Glenn saved his life. Downplayed as he realizes how awful this was and starts trying to make up for it.
- Pete's abuse of his wife and son bring him to the line, but he leaps right over it in the Season 5 finale when he threatens to murder Rick and murders Reg when he tries to calm him down. No one mourns him much after his execution and few take issue with refusing to bury him inside Alexandria.
- Ron Anderson passes it when he shoots out Carl's eye right in front of his father and surrogate mother.
- Negan hopscotches back and forth over the line when he not only murders both Abraham and Glenn, but subsequently mind rapes Rick right after into making him his loyal subject, and gleefully attempts to get Rick to either cut off Carl's arm or watch his other friends get shot dead. Though he relents on that last one when Rick finally gives in.
- Negan's right-hand man Simon outshined his leader in terms of psychotic ruthlessness when he's revealed to have massacred every male resident at Oceanside aged over 10 in a disturbing Gendercide punishment in order to dominate the community's women.
- Arat passes it when Season 9 reveals that she murdered Cyndie's 11-year-old brother during Simon's Gendercide on Oceanside.
- Savior David passes into true villainy when he attempts to rape Sasha while she's bound in a prison cell. Even Negan was so pissed off by this that he murdered the guy himself as punishment. Though you could also argue that he crossed into this earlier when he sexually harassed Enid, a minor who's decades younger than him.
- Gregory passes it when, in order to take back control of Hilltop, he attempts to have Maggie killed by getting Ken's father drunk and convincing him to attack her. When this plan fails he also tries to stab her with a knife.
- Alpha crosses it when she murders ten people, including Enid, Tara, and Henry and sticks their heads on pikes as a warning to the communities not to mess with her.
- Dante crosses it when he murders Siddiq after the latter discovers that he is a Whisperer spy planted in Alexandria. To add insult to injury, he even purposefully allows Siddiq to come back as a walker so he can eat his own infant daughter. Thankfully, Rosita was there to put down Siddiq's walker and save Coco.
- Toby Carlson crosses it when he systematically kicks the residents of the Riverbend Apartment Complex over the roof of the building to their deaths.
- Sebastian Milton crosses it when he's revealed to have sent forty people to their deaths just to fetch him money and drugs for his own exorbitant lifestyle.
- The Warden crosses it when he orders his men to open fire on a pregnant woman. Tellingly, when his plan is foiled, the other troopers don't bother to try to carry it out.
- If Pamela Milton didn't cross it by having Eugene set up for slaughter in court, she definitely does when she shoots Judith in a botched attempt to kill Maggie. Then she tries to save her own ass and those of the Commonwealth elite by having the swarm inside the walls diverted to the lower-class neighborhoods as a distraction to buy the soldiers more time to quell the herd.
Fear the Walking Dead
- Celia passes it when she deliberately poisoned communion bread being passed around at a Catholic mass to kill all the parishioners because they were against the idea of keeping zombies alive and viewed them as evil. This also directly leads to Thomas, a man who has supposedly been like a son to her, being bit by a walker, which eventually kills him.
- Derek and Brandon pass it when it's revealed that they killed Chris in cold blood after he's seriously injured in a car crash and lie to Travis about it when confronted by him.
- Marco and his bandits pass it when it's shown that he executed Francisco, his wife, and young daughter while laughing about it.
- Dakota already crossed one horizon after murdering John Dorie, but she soared over it even more after backstabbing the main group again and helping Teddy's apocalypse cult destroy much of Texas.
- In-Universe, Dwight and Sherry were relatively neutral to Strand's tyrannical reign in his tower until they learn that Strand was responsible for the family that sheltered the couple from the bombs getting slaughtered. After that, they're firmly on Morgan's side of the conflict.
