History MoralEventHorizon / SonicTheHedgehog

* [[BigBad Dr. Eggman himself]] has crossed this line ''at least'' once or twice despite his LaughablyEvil nature:

* Depending on who you ask, [[BewareTheSillyOnes Dr. Eggman himself]] has crossed this line once or twice despite his LaughablyEvil nature:

** In ''VideoGame/SonicColors'', Eggman kidnaps and enslaves the ''explicitly sentient'' Wisp race to harvest their Hyper-go-on life force to fuel a cannon meant to brainwash the inhabitants of Sonic's world, similarly to [[VideoGame/ShadowTheHedgehog Black Doom's]] plans of using humanity as a food source. The game makes it clear that he's already drained ''thousands'' of Wisps and forcefully converted them into Nega-Wisps, a painful process that-- while ultimately reversible-- would've risked bringing them to complete extinction if Sonic and Tails' intervention didn't happen, as evidenced by how Eggman offhandedly states he'd eventually harvest enough Wisp energy to mind-control the rest of the universe. In the DS version, Sonic even calls him [[YouMonster a monster]] for doing this.

** [[LoonyFan Dr. Starline]] walks towards the line several times, but he crosses it for real by mentally/emotionally [[ColdBloodedTorture torturing]] [[RobotGirl Belle the Tinkerer]] (whom he'd already orphaned earlier in the comic) and turning [[HydroElectroCombo Surge the Tenrec and Kit the Fennec]] into [[BrainwashedAndCrazy brainwashed]] [[CyberneticsEatYourSoul cyborgs]] so he can overthrow Eggman and rule the world. The [[AxCrazy psychotic glee]] [[LackOfEmpathy and callousness]] he displays all the wild just make his actions all the more disgusting.

** [[AdaptationalVillainy Chaos]] is already implied to have crossed it long before the events of the comic with his reputation as a feared and hated Drakon prosecutor, but he definitively does so by killing main character Johnny Lightfoot.

*** To make her an even more sympathetic character, she had no idea what she was doing when she nearly killed Sally. Drago gave her a Sonic mask (to make Sonic look like the hero) that had circuitry in the eyes that turned everyone in view into a duplicate of Snively, Robotnik's right hand. So, to recap: he bullied her into committing murder (even of a villain), gave her a mask that made her confuse her leader with her supposed target, and causes Sonic to be framed on the side. Yeah, Drago's a bastard.

** Emperor Metallix crossed it by having Porker Lewis tortured. Porker Lewis who was trapped on the Miracle Planet, with only his Brotherhood Of Metallix for company. It's never shown exactly what they ''did'' to Porker, but over the course of a single month, he's left absolutely traumatized to the point he quits the Freedom Fighters.
** Chaos crosses it by killing main character Johnny Lightfoot.
** Robotnik crosses it when he snaps from all his defeats at Sonic's hands, kills The Plax -- who had prior mistaken him for a God in their culture -- and uses their technology to cause a mass environmental collapse across both the planet Mobius and Earth. This would be bad enough on its own, but after Shortfuse the Cybernik undoes the damage and buries him in a cave-in in the process, Robotnik and his assistant Grimer unearth a vessel containing Chaos. Even after being told that unleashing said beast would [[TheEndOfTheWorldAsWeKnowIt bring about the world's end upon absorption of the Chaos Emeralds]], Robotnik does so anyway. After freely admitting he has no plan beyond that, he gathers the Chaos Emeralds to his lair to lure Chaos and the Freedom Fighters there, [[OmnicidalManiac with full intent for them all, himself and Grimer included, to die together]].

** Emperor Metallix crossed it by having Porker Lewis trapped on the Miracle Planet, with only his Brotherhood Of Metallix for company. It's never shown exactly what they ''did'' to Porker, but over the course of a single month, he's left absolutely traumatized to the point he quits the Freedom Fighters.

*** In the "Neutral" and "Semi-Dark: Hero" endings, he decides to kill everyone's favorite eggheaded scientist and take over the entire Eggman Empire for himself.
*** In the "Pure Dark: Dark" ending, he defeats Sonic and Diablon, and with both the power of the Chaos Emeralds and his mind poisoned by both Black Doom and [[VideoGame/SonicAdventure2 what he assumes to be Professor Gerald's last wishes]], prepares to [[OmnicidalManiac destroy the entire planet with everyone on it]]. Shadow's insane laughter only ''barely'' shows how far he's fallen, and making it worse, [[GoneHorriblyRight not even Black Doom wanted that to happen]].
*** The "Pure Dark: Hero" ending isn't much better, with him [[TheStarscream biding his time and betraying Black Doom]], then giving a NoHoldsBarredBeatdown to his partial creator. He takes over the Black Arms, and vows to [[GalacticConqueror conquer the universe]] with the power of the Chaos Emeralds.

** Emperor Metallix crossed it by having Porker Lewis tortured for a month.

** Robotnik crosses it when he tries to destroy Mobius.

* In ''WesternAnimation/SonicUnderground'', Robotnik has a degree of buffoonery and can be difficult to take seriously at times, but he firmly crossed this in "Tangled Webs" when he blackmails Cyrus with his father's life so the boy can spy on the Sonic Underground for him and thus reveal the location of Sanctuary, a hidden place of refuge for children and infants. So he could ''destroy'' it.

-->'''Dr. Eggman''': (to Black Narcissus) It's one thing to take them prisoner and threaten them, but when you actually hurt somebody, that's going too far!

!! The main ''VideoGame/SonicTheHedgehog'' games:

** Did you fail to collect all the Chaos Emeralds at the end of the Game Gear version of ''VideoGame/SonicTheHedgehog2''? If so, then Tails won't be saved by Sonic and the Bad Ending will show him as an image in the night sky, scarily implying that [[MadScientist Dr. Robotnik]] ''killed'' Tails, [[FateWorseThanDeath or worse]]. To say this dark twist shocked a lot of players back in the day is ''hardly'' an understatement.

* In ''VideoGame/SonicFrontiers'', The End breaks past this before the game began when it destroyed The Ancient's world, as well as having destroyed countless number of planets and stars before even that, as well as killing countless amounts of people. It goes even further when after being released it attempts to [[OmnicidalManiac consume all of existence]].

* The Robotnik from ''WesternAnimation/AdventuresOfSonicTheHedgehog'' isn't anywhere near as terrifying as he is in ''WesternAnimation/SonicTheHedgehogSatAM'', yet many of his plans involve lifetime enslavement at best or mass murder of civilians at worst. For example, in "Sonic Gets Thrashed", his entire scheme revolves around killing his own robotic creations and enslaving many Mobian citizens, and "Mass Transit Trouble" has him committing outright ''terrorism'' through his attempts to destroy three of Mobius' most important transportation hubs.

* In ''WesternAnimation/SonicUnderground'', Robotnik is mostly a buffoon and can be difficult to take seriously at times, but he firmly crossed this in "Tangled Webs" when he blackmails Cyrus with his father's life so the boy can spy for him on the Sonic underground, — and thus reveal the location of — Sanctuary, a hidden place of refuge for children and infants. So he could ''destroy'' it.
-->'''Robotnik:''' When we find it, Sanctuary will become... ''Cemetery!''

* ''Anime/SonicX'':
** Black Narcissus shows that he truly crosses the line when he captures and tortures Chris and Cosmo and uses them as bait to have the Metarex prototypes Silver and Gold test Sonic's speed, strength, and skills. This moment is what triggered Sonic's UnstoppableRage and SuperpoweredEvilSide transformation, and this action was just enough for Narcissus to cross the horizon itself. Good thing this series' Eggman and his followers came to help calm things down -- after all, EvenEvilHasStandards.
-->'''Dr. Eggman''': (to Black Narcissus) It's one thing to take them prisoner and threaten them, but when you actually hurt somebody, that's going too far!
** Pale Bay Leaf crossed the line with what he did to Leon and several other anti-Metarex resistance pilots from Molly's home planet: embedding their bodies into the bases of trees and leaving them to weaken within there as a show of betraying them after promising them fame and fortune by inviting them to the side of the Metarex.

* In ''ComicBook/SonicTheComic'':
** Emperor Metallix crossed it by having Porker Lewis tortured for a month.
** Chaos crosses it by killing a main character Johnny Lightfoot.
** Robotnik crosses it when he tries to destroy Mobius.

* In ''VideoGame/SonicFrontiers'', The End breaks past this before the game began when it destroyed The Ancient's world. It later states that it's destroyed other planets and stars, having killed countless of innocent lives.

** Mimic already crossed it from the get-go by helping Eggman kill the Diamond Cutters, [[FreakOut traumatizing Whisper to her very core]]. It doesn't help [[FaceHeelTurn he was on their side]] at first, ditched them [[ItsAllAboutMe only for selfish reasons]], and completely glosses over how much it hurt his former ally when he sees what's become of her. Then to top it off, he tries to kill Tangle by sealing her inside an airtight safe to suffocate, [[PrimalFear taking full advantage of her claustrophobia]].
** Dr. Eggman unleashing the Metal Virus, first on the village that kindly took him in, but then on Cream's village for no reason other than [[KickTheDog tick Sonic off]], almost robotizing everyone and destroying the world.
** Dr. Starline walks towards the line several times, but crosses it for real with his kidnapping, cyborgification, mental overwriting, and un-personing of Surge and Kit's original selves for his Operation Remaster. Simultaneously, he also [[MindRape brainwashes]] Rouge into [[WouldHurtAChild assaulting Tails]] against her will, tries to ''massacre hundreds of innocent people with an avalanche'' just to keep Sonic occupied, and gleefully tortures Belle--whom he'd already orphaned when he cured Eggman's amnesia--for her soul code, [[BreakTheCutie leaving her catatonic with heartbreak]].

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