History NightmareFuel / OnceUponATime

** [[IronicEcho Regina telling Charming that she's taken so many hearts that she's lost count.]] The way she says it, she's sounds ''insane.''

* Cora's vault of glowing red, still beating hearts. Even ''Frankenstein'' is creeped out.

* Cora's vault of hearts. Even ''Frankenstein'' is creeped out.

* [[spoiler: Frankenstein!Daniel grabbing Henry and Regina by the throat. While covered in blood. Because he's ripped off Whale's arm.]]

* [[spoiler: Frankenstein!Daniel grabbing Henry by the throat. While covered in blood.]]

* Everything about Moe's idea of 'saving' Belle from Rumpelstiltskin, but ''especially' watching the plan's execution.

* Pretty much everything about Cora. A CompleteMonster who can take the form of your loved ones? No thanks.

** Everything about Moe's idea of 'saving' Belle from Rumpelstiltskin, but ''especially' watching the plan's execution.

** And earlier, Belle's actual nightmare about Gold threatening to kill Grumpy and actually turning back into Rumpelstiltskin.

* Rumpelstiltskin ripping out [[spoiler:Milah's heart]]. [[{{Jerkass}} She's hardly sympathetic]] but ''damn'' Rumpel, that was ''cold.''

* From "Red Handed", walking up (completely out of it) and discovering you've in fact ''[[ImAHumanitarian eaten]]'' your one true love. Doubles as a TearJerker.

* Storybrooke!George watching David/Charming play with Henry. From his car.

* Ogres. Specifically, imagine being no more than maybe 12 years old and being conscripted to fight something the size of a small giant. Yeah, no wonder Baelfire's friend seemed so wise. If she survived a tour of duty, she'd have to have quite the intestinal fortitude and tactical smarts for a kid.

* Pretty much everything about Cora. A CompleteMonster who can take the form of your loved ones? No thanks.

* Rumpelstiltskin's FreakOut after being kissed by Belle. It's the only time he's really, truly been terrifying. Talk about deconstructing the LoveRedeems trope...

* Sneezy's lost all his Fairy Tale memories ''again'', possibly permanently this time - which is practically the same as him ''dying''.

* [[UsedToBeASweetKid Regina's]] ImagineSpot murdering Snow in 2x02. The worst part is that she hasn't gone off the rails yet.

* Seeing the mother who raised you attempting to murder your grandfather certainly counts.

* In the Season 2 premiere, the [[spoiler: Wraith]], a monster that can best be described as a even more demonic version of a HarryPotter Dementor. Its arrival in Storybrooke is announced by an earthquake which causes the town to shake and car alarms to go off. Did I also mention it happens at night? Sure, it was [[spoiler: sent by Mr. Gold to kill Regina]] and failed, but it did suck the soul out of [[spoiler: Prince Phillip]].

* In the Season 2 premiere, the [[spoiler: Wraith]], a monster that can best be described as a even more demonic version of a HarryPotter Dementor. It's arrival in Storybrooke is announced by an earthquake which causes the town to shake and car alarms to go off. Did I also mention it happens at night? Sure, it was [[spoiler: sent by Mr. Gold to kill Regina]] and failed, but it did however suck the soul out of [[spoiler: Prince Phillip]].

* In the Season 2 premiere, the [[spoiler: Wraith]], a monster that can best be described as a even more demonic version of a HarryPotter Dementor. It's arrival in Storybrooke is announced by an earthquake which causes the town to shake and car alarms to go off. Did I also mention it happens at night?

* In the Season 2 premiere, the [[spoiler: wraith]], a monster that can best be described as a even more demonic version of a HarryPotter Dementor. It's arrival in Storybrooke is announced by an earthquake which causes the town to shake and car alarms to go off. Did I also mention it happens at night?

* In the Season 2 premiere, the [[spoiler: wraith.]]

* In the Season 2 premiere, the [[spoiler: wraith]]

* The Blind Witch : the cheeriest humanitarian ever.

* King Leopold's actions. He accepted an answer from Regina's mother to his proposal (which he made for Snow), wants her to remain faithful to him and treat him as her husband (while he himself is this only in name), and will possibly kill her lover when he finds him.

* Many ones involving parents and children...
** The biological mother of your adopted child seeking you out and winning his affections from you.
** War resulting in the kingdom lowering the minimum age of soldiers. Followed up with the army coming in and taking your child, regardless of gender or parental opinion, the moment they meet age requirements.
** Being trapped somewhere and unable to return home to your child, who doesn't even remember that she is your child.
** Through a moment of weakness, becoming separated from your child for a long time, possibly forever.
** Sending your child away somewhere unknown, in an effort to protect them from a dangerous threat, knowing it's likely you won't see them again potentially ever.
** Your child in a coma, not knowing what you can do to save him, and walking in to find out he's been declared dead.

* Also, losing someone and being unable to bear it, and do anything to avenge them / find them.