History NightmareFuel / Supergirl

* In ''Comicbook/ActionComics'' # 402 "Feud of the Titans", Superman and Supergirl are accidentally exposed to a bio-chemical weapon which makes them hate each other. This is story is both hilarious (both cousins are incredibly and ridiculously petty) and scary (imagine they--two Earth-1 Kryptonians--decide to fight seriously. They would tear the planet apart).
* Lesla-Lar's talents included body-swapping, and she was disintegrated on-panel in her second appearance. Her final appearance had her mental energy dispersed on the astral plane, killing her for good.
* ''Superman's Girlfriend Lois Lane'' #55 epitomizes why you never, ever, let Krypts near from Red-Kryptonite. Supergirl hypnotizes her cousin into making whatever she wants, locks ComicBook/LoisLane up in a coffin and is going to freeze her into suspended animation for a thousand years. Luckily that's when Kara snapped out of K-induced craziness... but notice if a Kryptonian goes insane and wants to bury you alive you can't outrun them, overpower them or doing anything, really.
* ''Adventure Comics'' #408 -titled "The Face At The Window"- is a bona fide ghost story: an old mansion owned by a trigger-happy old man who hates visitors, a mysterious little girl wandering over the halls in the dark and requesting to help her find her missing parents, and corpses murdered and hidden in the basement by the house-owner several decades ago. [[http://comicboxcommentary.blogspot.com.es/2011/10/happy-halloween-back-issue-box.html Reviewed here]].

* In some post-Crisis stories, several characters met some kind of spirit called "Kara". [[ComicBook/{{Batgirl}} Barbara Gordon]] herself [[http://comicboxcommentary.blogspot.com.es/2015/10/supergirl-sighting-post-crisis.html made an imaginary friend called Supergirl]]. This would imply the original Kara Zor-El's spirit got stuck on the post-Crisis Earth, but she was reduced to a ghost who wandered the Earth after losing everyone she loved, being unable to communicate with people--with exceptions--and had been forgotten by the universe she saved.
* Kara spent thirty years in suspended animation, curled-up in a tiny pod and trapped in Kryptonite which hurt her and poisoned her mind.

* ''Superman's Girlfriend Lois Lane'' #55 epitomizes why you never, ever, let Krypts near from Red-Kryptonite. Supergirl hypnotizes her cousin into making whatever she wants, locks ComicBook/LoisLane up in a coffin and is going to freeze her into suspended animation for a thousand years. Luckily that's when Kara snapped out of K-induced craziness... but notice if a Kryptonian goes insane and wants to bury you alive you can't outrun him, overpower him or doing anything, really.

* After ''ComicBook/NEwKrypton'', Kara has a nightmare in which she's fighting Superwoman again. Then Superwoman's flesh melts off her face and she becomes a skeleton. All of sudden, Kara finds herself in a hellish landscape, surrounded by flames and skeletons. Her dead mother accuses her from letting them die, and her murdered father wants to take her with them.

!! Pre-Crisis

!!Post-Crisis Supergirl

!!New 52 Supergirl

!!Others
* In ''ComicBook/GothamCityGarage'', Kara Gordon was abducted and experimented on by ComicBook/LexLuthor who wanted to control her and harness her power. James Gordon rescued her, although he had to alter her and [[ComicBook/{{Batgirl}} his daughter]]'s memories to keep her safe. Even so, it meant Kara had to live a decade in a city despotically ruled by Lex Luthor and patrolled by robots which gun down whoever "malfunctions".

!! Pre-Crisis Supergirl

* In some post-Crisis stories, several characters met some kind of spirit called "Kara". And [[http://comicboxcommentary.blogspot.com.es/2015/10/supergirl-sighting-post-crisis.html Barbara Gordon made an imaginary friend called Supergirl]]. This would imply the original Kara Zor-El's spirit got stuck on the post-Crisis Earth, but she was reduced to a ghost who wandered the Earth after losing everyone she loved, being unable to communicate with people--with exceptions--and had been forgotten by the universe she saved.

* NightmareFuel/{{Supergirl 2015}}

!!The film
* The demon Selena summons in the climax nearly pulls Supergirl apart.

* In ''ComicBook/GothamCityGarage'', Kara Gordon was abducted and experimented on by ComicBook/LexLuthor who wanted to control her and harness her power. James Gordon rescued her, although he had to alter her and his daughter's memories to keep her safe. Even so, it meant Kara had to live a decade in a city despotically ruled by Lex Luthor and patrolled by robots which gun down whoever "malfunctions".

* NightmareFuel/{{Supergirl 1972}}
* NightmareFuel/{{Supergirl 1982}}
* NightmareFuel/{{Supergirl 2005}}
* NightmareFuel/{{Supergirl 2011}}

* In some post-Crisis stories, several characters met some kind of spirit called "Kara". And [[http://comicboxcommentary.blogspot.com.es/2015/10/supergirl-sighting-post-crisis.html Barbara Gordon made an imaginary friend called Supergirl]]. This would imply the original Kara Zor-El's spirit got stuck on the post-Crisis Earth, but she was reduced to a ghost who wandered the Earth after losing everyone she loved, being unable to communicate with people -with exceptions- and had been forgotten by the universe she saved.

* In ''Comicbook/ActionComics'' # 402 "Feud of the Titans", Superman and Supergirl are accidentally exposed to a bio-chemical weapon which makes them hate each other. This is story is both hilarious (both cousins are incredibly and ridiculously petty: Kara puts up an energy barrier to keep Kal off her side of the Fortress, and he retaliates by smashing her torphies) and scary (imagine they -two Earth-1 Kryptonians- decide to fight seriously. They would tear the planet apart).
* In some post-Crisis stories, several characters -Deadman, Linda Danvers...- met some kind of spirit called "Kara". And [[http://comicboxcommentary.blogspot.com.es/2015/10/supergirl-sighting-post-crisis.html Barbara Gordon made an imaginary friend called Supergirl]]. This would imply the original Kara Zor-El's spirit got stuck on the post-Crisis Earth, but she was reduced to a ghost who wandered the Earth after losing everyone she loved, being unable to communicate with people -with exceptions- and had been forgotten by the universe she saved.

* NightmareFuel/SupergirlCosmicAdventuresInTheEightGrade

* NightmareFuel/TheSupergirlFromKrypton

[[caption-width-right:350:''Adventure Comics #421'': Trapped in a psychic hellish dimension of raw evil populated by demons. And your invulnerability ''doesn't'' work. Have fun.]]

[[caption-width-right:350:''Adventure Comics #421'':Trapped in a psychic hellish dimension of raw evil populated by demons. And your invulnerability ''doesn't'' work. Have fun.]]