History NightmareFuel / StarVsTheForcesOfEvil

* Mina is defeated at last. Then Marco arrives and drops a bombshell: the person in the suit of armor ''isn't Mina''. It's just some random mook. Cue ''hundreds'' of the same giant suits of armor marching toward he castle, with Mina at its head. Saying this went FromBadToWorse would be an understatement. It's Mewdipendence Day all over again.

* The titular demon Star summons seems to be more creepy than scary, despite looking like an underwhelming BedsheetGhost at first. He winds up being [[SurpriseCreepy BOTH]], with how he ''[[DroolDeluge just drools everywhere at his largest size.]]''

[[caption-width-right:350: ''[[VoiceOfTheLegion I'M]]'' ''[[DroolHello STILL]]'' ''[[ToServeMan HUNGRY...]]'' ''[[MadnessMantra I'M STILL HUNGRY...]]'']]

While this show has colorful and wacky visuals and an absolutely adorable cast of characters, it can also segue right into horrifying then right back to being sunshine and flaming rainbows... and sometimes it ''just doesn't change back.''

'''Glossaryck:''' "Hello, Toffee."\\

* When they talk about "dipping down", Star and Glossaryck's pupils end up widening and consuming their irises and sclera, making them pitch black, which is [[UncannyValley very unsettling]] to look at.

* Mr Candle's NonStandardCharacterDesign may be UncannyValley for some.

*** [[UpToEleven This is made even more disturbing]] when you realize that one of the minions in question was Lobster Claws, one of the few monsters that Star and Marco come to sympathize with and one [[ForcedIntoEvil who actually showed signs of being good inside]].

** It's cerebral, too - In an absolutely nightmarish voice, Toffee's left cursing Star, claiming that "''I'm the only one who knows how this all turns out!!''". Seeing him ''lose it'' like this is chilling.

** Turns out there's similarities between Tom and Miss Heinous, too. Both were Mewman-Monster hybrids born to royalty, and subjected to FantasticRacism because of their race. However, it was the Magic High Commission's intervention that led to Meteora being abandoned, abused, and twisted into the villain she is today; [[AdultFear Tom's parents must've been extremely lucky their son wasn't targeted for the same reasons]].

* Eclipsa finds out that [[AdultFear her daughter was erased from history with no one caring and then was replaced by Festivia, who appears to have been]] ''a total stranger'' to Eclipsa. And the Council thinks ''she's'' evil.

* In a more [[AdultFear mundane]] way, Ben Fotino. He's a voyeuristic creep who coerced two random teenagers into kissing each other just because he thought they should, is completely unconcerned with their visible distress afterwards because at least ''he'' got what he wanted, and [[KarmaHoudini completely gets away with it]]. Also counts as ParanoiaFuel, as neither Star nor Marco, nor even Pony Head were aware that this guy lived inside the booth, despite having used it to take friend photos several times before.

* As Globgor grapples with Omnitraxus on the stage, setting it on fire in the process, Meteora starts to crawl over to him, [[AdultFear much to Eclipsa's horror]].

* After putting Meteora and Mariposa to bed, Marco gets a cryptic warning from Hekapoo, who orders him to stay on Earth. A few minutes later, when Marco and Star go to check on the babies, one of Hekapoo's portals is still open, ''[[AdultFear and both babies are gone]]''.

** If you want specifics, :Star transformed into a [[MultiArmedAndDangerous 6-armed,]] [[PurpleIsPowerful purple-skinned,]] [[WingdingEyes heart-shaped]] [[GlowingEyesofDoom and glowing-eyed,]] [[HornedHairdo horned hairdo-ed]] [[ArsonMurderAndJaywalking hammy]] [[LoveHungry boy-obsessed]] [[TheFairFolk fairy thing]] with [[ComicBook/SpiderMan Spider-Man-like]] web powers.

* It is revealed that Ms. Heinous has spade stickers on her cheeks, implying her to somehow be related to Star and her mother. She gets rid of them through her brainwashing machine. What are the face markings and what horrific thing happens to a person's mind, if they lose them?

* What's revealed about [[TheDreaded Eclipsa]] over the course of season 3 is much worse than what was foreshadowed. Not because she herself is scary, but because what ''happened'' to her is scary. She didn't do ''anything''. Moon and the High Commission even admit as much, she was [[AndIMustScream locked away for centuries]] and taken from her lover and her ''child'' and she. Did. Nothing. Even after being forced to admit that, the High Commission still intend to lock her away, all because of the ingrained racism and prejudice in Mewman society causing these otherwise good people to do something awful to an innocent woman.

* Quirky Guy demonstrates what happens to monsters if too wounded by Solarian wounds: they just explode into light. [[NoBodyLeftBehind No body]], no blood, just... nothing left behind as they explode. Oh, and when they explode, ''[[KilledOffForReal they don't come back]]''. Janna's [[OOCIsSeriousBusiness scream of terror]] was appropriate.

** Also, bit of FridgeHorror, just because the person didn't get boilded to death, doesn't mean they didn't drown in the juice.

* In a desperate attempt to feed some of Glossaryck 's aforementioned pudding to Tom, Marco manages to ''[[ImpaledWithExtremePrejudice impale himself on the dark unicorn's horn.]]'' It's brief, but you can clearly see the horn sticking out of his back. Arguably one of the most graphic injuries on the show.

* Glossaryk, the Magic High Commission, and the unicorns in the Realm of Magic all die due to the destruction of magic, the latter having the ''flesh melt off their bones''. And that's not even considering what the magic and the Wand being destroyed does to the spells inhabiting it and other magical beings across the Multiverse, like the Laser Puppies.

* What's revealed about [[TheDreaded Eclipsa]] over the course of season 3 is much worse than what was foreshadowed. Not because she herself is scary, but because what happened to her is scary. She didn't do ''anything''. Moon and the High Commission even admit as much, she was [[AndIMustScream locked away for centuries]] and taken from her lover and her ''child'' and she. Did. Nothing. Even after being forced to admit that, the High Commission still intend to lock her away, all because of the ingrained racism and prejudice in Mewman society causing these otherwise good people to do something awful to an innocent woman.

* What's revealed about [[TheDreaded Eclipsa]] over the course of season 3 is much worse than what was foreshadowed. She didn't do ''anything''. Moon and the High Commission even admit as much, she was [[AndIMustScream locked away for centuries]] and taken from her lover and her ''child'' and she. Did. Nothing. Even after being forced to admit that, the High Commission still intend to lock her away, all because of the ingrained racism and prejudice in Mewman society causing these otherwise good people to do something awful to an innocent woman.