Anon as JJJ to Sunset's Spider Shim.
    Takes the role of a newspaper publisher J. Jonah Jameson in his quest to uncover the secret identity of Spider Shim. Ages can vary, up to writer's choice, college age newspaper? 

 >"You wanted to see me Anon?"
"Shimmer? It's about damn time! I called you here an hour ago!"
>"It's only been 5 min—"
"Enough about that, have you seen the news? Spider-Girl is back at it again!"
>"Um I believe it's Spider-Woman not Spider-Girl—"
"Spider-Menace more like! She is terrorizing our city's streets, she just beat up an old eccentric scientist!"
>"Anon that 'eccentric' scientist was trying to blow up the city!"
"And the worst part is, THOSE CRYSTAL PREP PUNKS GOT THE SCOOP FIRST!"
>"Well they were nearby..."
"Enough! Get out there Sunset. Get me pictures of Spider-Girl!"
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Exploring the moral implications and social responsibility of being a vigilante staring Twilight Sparkle as Batman and Pinkie Pie as the Joker
	Twilight is the Batman, writers choice as to which iteration, having to grapple with the fact that she is a vigilante.
Many ways you can take this prompt from  
  comedic, campy version of Twilight who was given the mantle of Batman in her parents will, who now has to fight a very Adam West version of Pinkie "Joker" Pie.
 Or a more serious dramatic look ala the Dark Knight Returns

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Luna as Mare-Do-Well in Equestria.
 	Luna is disgusted to learn just what exactly modern Equestria has wrought. Decides to fight crime throughout Equestria as Mare-Do-Well, but mainly in Manehattan
 		Writer's choice on what "crimes" she deals with. From something more lighthearted such as "Mares and Stallions strolling the park at night! My word! In my day..." to 				
 		actual crime.
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The general is basically
>superheroes but horse people
From then on just grab a hero, grab a character, mash them together and see what you have.

>how the act of goodness is heroic in itself without the need for super powers staring Applejack as Superman
>the importance of fiction and the breaking down of reality as imagination bleeds in staring Bulk Biceps as Flex Mentalo and Luna as the Sandman
>the interlockings of mind and reality and what insanity truly is without no base for comparison staring Rarity as Shade the Changingman
>the importance of preserving nature and its role in mysticism staring Treehugger as Swamp Thing
>the importance of preserving animals as well an exploration of their capacity to feel emotions resembling a human's if they have any at all staring Fluttershy as Animalman
>the paths of magick and the sacrifices one must make to atone for past sins committed with black sorcery and schickanary staring Trixie as John Constantine the Hellblazer
And of course, Shim Sham as Spider Shim