Blackbewhite2k7
Chaotic Little Trees - 1000+ images under their artist tag
A Really Hyper Artist - 500+ images under their artist tag
A Really Classy Artist - 250+ images under their artist tag
An Artist Who Rocks - 100+ images under their artist tag
Artist -
Since the Beginning  -

@Background Pony
 
Very bright, enthusiastic female character who’s always had applejack’s support/comfort (or at least quickest expressed remorse) when everyone else doubted her.
 
Her (and AJ’s) dynamic with Spike is also very reminiscent of Louis and Clark’s connection to Jimmy.
Background Pony #54A6
Not that I don’t have a problem with it, but why Twilight Sparkle as Lois Lane? I think it sounds really interesting and I’m just curious to know.
Blackbewhite2k7
Chaotic Little Trees - 1000+ images under their artist tag
A Really Hyper Artist - 500+ images under their artist tag
A Really Classy Artist - 250+ images under their artist tag
An Artist Who Rocks - 100+ images under their artist tag
Artist -
Since the Beginning  -

@Background Pony
 
Sounds interesting
Background Pony #54A6
Oh and also some character ideas. Gilda as Maggie Sawyer and Trixie or Sunset Shimmer as Lana Lang (mostly for the somewhat antagonist relationship between her and Lois Lane (AKA: Twilight Sparkle)).
Background Pony #54A6
Are you going to make this more of the Superman Universe in the DCAU like for Batmare or more-so the comics?
Psyga315
Wallet After Summer Sale -
Not a Llama - Happy April Fools Day!
Thread Starter - We Are Our Avatars
The End wasn't The End - Found a new home after the great exodus of 2012

The Fallen Brony
>Sombra as Zodd
 
Heh.
Aharon L'anglais

I see dead ponies...
Discord: Chickens are always funny, although personally I prefer ducks, or ostriches or just for the sake of novelty…
 
Discord turns Big Mac and Granny Smith into strange alien creatures.
 
Discord (cont.) Ooh, I’ve never seen those before.
 
A.J. grabs him by the neck.
 
Applejack: Bring them back.
 
Discord: Take it easy the folks are okay. let’s just put them up here for safekeeping
 
Discord hangs Granny Smith and Big Mac who have been turned into Equestrian Gothic on the wall.
 
A.J.: Who are y’all?
 
Discord: Like Grandma said, I’m the god of chaos and mischief.
 
A.J.: What do y’all want with me?
 
Discord: Laughs. You see for centuries now I’ve been pitting my magic against schmoes who thought they could go fifteen rounds with the old master. You know those stories about , genies, imps and leprechauns?
 
Applejack: You?
 
Discord: Guilty. After a while I became bored with your basic rank and file ponies but then you came along… SUPERMARE! You my friend are the ultimate challenge. We’re going to have very merry games you and I.
 
AJ: A game has rules. Your stunts are just random idiocy.
 
Discord: Ok I’ll give you a rule. If you make me say, spell or otherwise reveal my name backwards, I’ll split and lose most of my powers for, oh say, ninety days.
 
Applejack: Ah can barely remember you name forward. How am ah supposed to say it backwards?
 
Discord: No you dolt, you don’t have to say it. You have to get me to say it.
 
Applejack: Say what?
 
Discord: DROCSID! Celestia you’re thick. Now for the last time… Aw nuts! (poof)
ClownDicks
The End wasn't The End - Found a new home after the great exodus of 2012

Why do I feel like the main reason Rich is Lex, as opposed to Fancy Pants, is because DT is his daughter and she is teh evil? And c’mon, Tirek’s gotta be Darkseid. Motherfucking Tirek, mang.
 
Regardless, Jappleack as Bizarro, like that anon there said, would be great, assuming you can nail Gilardi’s style. Though she’d be Apple Bloom’s enemy more than AJ’s enemy.
SSJWolverine

Filthy Rich as Lex Luthor.
 
Would that make Diamond Tiara Mercy Graves?
Blackbewhite2k7
Chaotic Little Trees - 1000+ images under their artist tag
A Really Hyper Artist - 500+ images under their artist tag
A Really Classy Artist - 250+ images under their artist tag
An Artist Who Rocks - 100+ images under their artist tag
Artist -
Since the Beginning  -

@Background Pony
 
Makes sense. That’s a possibility.
Background Pony #856D
I’d put Sombra as Darkseid considering he made the Crystal Empire his own personal Apokalyps.
Background Pony #5FEA
Shy, as silver banshee…  
Epic win
Background Pony #3885
@Aharon L’anglais  
Liarjack or Jappleack. Leaning more towards Jappleack though
Aharon L'anglais

I see dead ponies...
Liarjack: You no am Supermare! Me am Supermare!
Aharon L'anglais

I see dead ponies...
Discord as Mxyzptlk is a perfect casting choice.
Blackbewhite2k7
Chaotic Little Trees - 1000+ images under their artist tag
A Really Hyper Artist - 500+ images under their artist tag
A Really Classy Artist - 250+ images under their artist tag
An Artist Who Rocks - 100+ images under their artist tag
Artist -
Since the Beginning  -

@Keith Mowz
 
That’d make sense.
Wesley Foxx
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Helpful Owl - Drew someone's OC for the 2018 Community Collab
Birthday Cake - Celebrated MLP's 7th birthday
Not a Llama - Happy April Fools Day!
Best Artist - Providing quality, Derpibooru-exclusive artwork
Friendship, Art, and Magic (2017) - Celebrated Derpibooru's five year anniversary with friends.
Happy Derpy! - For Patreon supporters
An Artist Who Rocks - 100+ images under their artist tag
Artist -
The End wasn't The End - Found a new home after the great exodus of 2012

The Fluffiest
… Wait, would that mean Gilda is Hawkgirl?
Wesley Foxx
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Helpful Owl - Drew someone's OC for the 2018 Community Collab
Birthday Cake - Celebrated MLP's 7th birthday
Not a Llama - Happy April Fools Day!
Best Artist - Providing quality, Derpibooru-exclusive artwork
Friendship, Art, and Magic (2017) - Celebrated Derpibooru's five year anniversary with friends.
Happy Derpy! - For Patreon supporters
An Artist Who Rocks - 100+ images under their artist tag
Artist -
The End wasn't The End - Found a new home after the great exodus of 2012

The Fluffiest
@Blackbewhite2k7  
Iron Will’s not a bad match. Snowflake would amuse me more, but he’s definitely also a good fit for Grundy.
Blackbewhite2k7
Chaotic Little Trees - 1000+ images under their artist tag
A Really Hyper Artist - 500+ images under their artist tag
A Really Classy Artist - 250+ images under their artist tag
An Artist Who Rocks - 100+ images under their artist tag
Artist -
Since the Beginning  -

@Keith Mowz
 
Already have Snowflake as Grundy.
 
I’d say being a musclebound motivational speaker with the voice of Mr.Satan himself makes you plenty badass, but that’s just me.
Wesley Foxx
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Helpful Owl - Drew someone's OC for the 2018 Community Collab
Birthday Cake - Celebrated MLP's 7th birthday
Not a Llama - Happy April Fools Day!
Best Artist - Providing quality, Derpibooru-exclusive artwork
Friendship, Art, and Magic (2017) - Celebrated Derpibooru's five year anniversary with friends.
Happy Derpy! - For Patreon supporters
An Artist Who Rocks - 100+ images under their artist tag
Artist -
The End wasn't The End - Found a new home after the great exodus of 2012

The Fluffiest
Iron Will isn’t sufficiently badass to be Lobo. Make him Snowflake.
Number1pegasus
Thread Starter -  Waifu Thread

The Element of laughter
Make Tom the rock Doomsday!
Lord WyrmSpawN
Solar Supporter - Fought against the New Lunar Republic rebellion on the side of the Solar Deity (April Fools 2023).
Non-Fungible Trixie -
Thread Starter - MLP G5 Discussion and Speculation Thread
My Little Pony - 1992 Edition
Wallet After Summer Sale -
Friendship, Art, and Magic (2019) - Celebrated Derpibooru's seventh year anniversary with friends.
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Not a Llama - Happy April Fools Day!
Friendship, Art, and Magic (2017) - Celebrated Derpibooru's five year anniversary with friends.
The End wasn't The End - Found a new home after the great exodus of 2012

Put Out to Pasture
The only one I don’t recall and this can’t vouch for is the one for Fluttershy.
 
Rest are pretty spot-on.