Heyo! This list contains some new user-created villains as well as a few ideas of my own. Be wary of spoilers. Again, if your villain is not on here it's likely he/she was overlooked, not rejected. Also keep in mind that not all user-created villains will be used in a prominent manner.

Loners
Eldrich Abominations/Monsters
Alternator - Currently residing in Canterlot hospital. Crazy awesome form-changing ... thing. Read about him.
The Shapeless - Feeds off fear. Possibly feeds off it from those in the artifact. + (May be used in first arc)
Ender - Possible creature from the moon or a planet on the far side of the MLP solar system which he calls No Cre'Her. (No other solar systems in this universe with planets.) Went insane due to being off his homeworld for too long.
Shadowmist - Young Adult dragon about six feet tall. Somewhat sympathetic backstory. Possible anti-hero.
Jyrmmkoh - Freaky mo-fucking Eldrich Abomination. Turns its enemies against one another.
Kur - Slave hunting dragon.
Scorn - An abomination that feeds of negative emotional. Like a troll, he wants your hate ;).

Magic
Negato - Zebra. Hunts unicorns. Nullifies magic. Skar expy.
Nyx and Ying - A human user of chaos magic from the DC Universe. Enemy of Klarion the Witch Boy (The New Batman Adventures). Bit of an anti-hero. Ying = pet eagle.
The Amazing Mumbo - The artifact is the only known way to ride out the end of the universe... save for Mumbo's Hat, of course. Perhaps time moves quicker in it, perhaps he's just froze himself, but however he did it, he eventually caught up with the foes he had the most fun fighting...
This guy will fuck your shit up.
Klarion the Witch Boy - Possible inclusion in the fic. Enemy of Nyx if he is.

Badass Normals - Tech and Just Good Fighters
Slade - +++ (already in)
Ins4n1ty - Batshit insane torture master who also has a love for icecream.
Mist Breeze - Pegasus thief who uses her inborne weather magic for her shenanigans.
Red X - Heard of the legends of Red X. Same costume, but different tech.
MR. FREEZE - THE Mr. Freeze who became stuck in the artifact after a fight with Blight. Great concept. fuck yeah fuck yeah fuck yeah. ++ (There will be an arc based around him god damnit)
Silver - Insane giraffe. Lives in Whitetail Woods.
Miss Malady - Badass potions maker. Can control poison joke to a certain degree.

Cyborgs/Golems/Robots
Puppeter - Somewhat like the Puppet Master in Teen Titans. Sympathetic in a way.
Gary Goldclaw - Badass Gryphon scientist who is now sort of like Iron Man/Dr. Light/and Shriek combined.
Talos the Machine King - An ancient mechanical creation made long before Celestia and Luna. Locked away in a desert.

Supernaturals
Relic Daybreak - Vampire daywalker who can actually shoot sunlight. Loves testing people. Kind of creepy.
Necrosis Wraith - Undead mo fucka. One of Starswirl's former rivals. ++ (Definite use in the Captain Black arc. Featured on cover.)
Videntis - Badass assassin bat-pony. Former guard. Bloodlust.
Raven Mocker - Mythological creature. Steals souls of the dying.
Reckoletor - Creepy mother fucking demon who morphs animals to what he needs.
Wrath - The embodiment of the Everfree Forest's anger. +++ (Already in)

Changelings
Mystrailia - Changeling/pony hybrid falsely accused by Shining Armor himself for committing a crime.

Elementals
Phoenix - Part phoenix. Currently confined to Tartarus.
Thunder and Lightning - The same two fellows from the Teen Titans reincarnated. Possibly take over the bodies of Snips and Snails? Would be hilarious. + (Possible their own mini-arc)

Possible Team Players

Eldrich Abominations/Monsters
Pandemoneum - Cousin of Discord. Bit more destructive but has a small soft side.
Onyx Claw - Teenage dragon. Sparr master.

Magic
Lord Goldbloom - Hates bullies. Illusionist. Drives people mad.
Frost Wind - Unicorn Mr. Freeze.
Strike Bomb - Crystal Unicorn with a love for explosive crystal magic.
Runic Fire - Uses runes as an advantage in combat. Egomaniac
Blackhoof - Torture master and trap making unicorn. Mercenary. Overconfident.
Midnight Stardust - Magic sword wielding unicorn.
Dusk Edge - Sword-summoning unicorn.
Professor Valorous Rex - Sympathetic villain obsessed with restoring his daughter's essence. Very dark backstory.

Badass Normals
Ramming Wreck - Minotaur bruiser..
Steel Wing - Griffin badass mercenary who will fuck you up.
La Muerte- Mexicolt assassin. Badass. Definite anti-hero.
Gnarl and Grimoire - Pair of mercenaries. Will accept artifacts/arcane objects/ext. as payment + (Likely will make use of them as comedic relief villians)
Sprinkles - Mob Seller of destructive doughnuts. This is awesome.

Cyborgs/Golems/Robots
Sharpened Intelligence - Pretty much a soul attached to a robotic body.
Diesel - Mechanical construction of pure hate. Possibly Made by Slade.

Supernaturals
Captain Black Harness - Immortal Earth Pony currently tainted by the Black Orb. Cannot die. Ever. (Not just in story regards either.) +++ (Already in)
Nitro - A very fast pony made out of steel. Anti-hero fo sure. Could make a decent enemy for Sonic Flash and Rainbow to team up against.
Brother Blood - Another refugee who eventually found the artifact . (The artifact sort of called for him). Has since discarded his Cyborg form and is looking to form a new H.I.V.E.

Changelings
Requiem - Changeling dark magic user trying to take over the hive. ++ (Definite use in the changeling arc. Featured on the cover image.)
Fang Cloak - Decent changeling infiltrator
Silent Shadow - Badass changeling infiltrator. Do not fuck with her or she will turn you against your best friend.

Elementals
Snowfall - Half-windigo descendent of Snowdrop. After Princess Luna's life. A taaaaad bit bitter.
Blizzard - Pegasus who has seven friggin windigos in her. Very brutal combatent.
Murachan - Zebra elemental master. Mercenary.
Slade's Myterious Associate - +++ (Already in)
Spawn - A living being of fire. Terrorist fo sure.

Created Groups
The Others - Badass group of thieves or mercenaries. Possibly terrorists. + (Probably will find a use for them sometime soon.)

Heroes (Or Helpers of Heroes) in Ponyville and the Surrounding Areas

Eldrich Abominations/Monsters
The Slendermane - Silent guardian and manifestation of the Everfree Forest's Fear.

Magic
Starfire - Pegasus Titan able to spawn energetic green ball lightning on her frontal hooves. (Also, laser eyes. Winning)
Princess Twilight Sparkle - Princess currently residing in Ponyville to begin her studies. She's fairly powerful, but not invincible. Her power is nowhere near Luna/Celestia's. The Titans' government contact.
Princess Celestia and Luna - Equestria's immortal rulers. Also happen to be Titans' fangirls.
Rarity - Not really a hero, per-say, but she'll fix up your costume in a jiff. Maybe she'll figure out a way to shield it from magic, too... decent shot with combat magic when in a tight spot.

Badass Normals
The Doctor - The current universe's reincarnation of the Doctor. He's the Doctor: Nuff said. Possibly currently deceased. Has inexplicably decent skills with sword-fighting and bo-staffs (the latter of which he prefers)
Derpy - Intelligent assistant of the Doctor. Possibly currently trapped in the distant past. Somewhat decent with a bo-staff as well. (The Doctor loves Bo-staffs, Bo-staffs are cool.)
Rainbow Dash - Pretty much one of the most badass pegasi in Equestria. May occasionally help the Titans out.
Applejack - The most normal of badass normals. Strong hooves and a good shot with a Hoof-Rifle. Part of the Town Militia.
Granny Smith - The oldest badass of badass normals. Good with a Hoof-Rifle. Part of the Town Militia.
Robin - Do not fuck with him. No matter who you are. Kill him quickly or he will figure out how to take you down.
Sergeant Necrospear - Captain of the Night Guard (bat-ponies) in Ponyville. The Titans go-to person when smaller crimes take place.
The Staff of Ponyville Hospital - Pretty much expies of Scrubs characters. However, its Resident Chief Dr. Cox happens to be one of the greatest doctors in Equestira (even if nopony likes to admit it). They're on hand to treat the Titans' multiple injuries. This happens a lot.
Link - ???

Cyborgs/Golems/Robots
Cyborg - BOOYA! Current robot-parts powered by magitek. Raven helps him out here.

Supernaturals
Raven - Rockin' demon gothic snarky Titan of black magic doom. Unicorn (who will eventually learn how to fly)
Zecora - The Manifestation of the Everfree Forest's pride. Zebra magic (elemental) is her strong point, as well as hoof-to-hoof combat and alchemy.
Pinkie Pie - Nopony knows what the fuck she really is. All that's known is she is fairly harmless. Do not mess with her friends, however.
Sorrow - The manifestation of the Everfree Forest's sorrow. Powerful but fairly placid.
Sonic Flash - Pretty much a part-hedgehog, part-pony. A sonic expy and potential rival of Rainbow Dash (if she ends up joining the Titans)

Changelings
Beast Boy - A literal changeling. Feeds off love. He's pretty much the greatest changeling on Trinity when it comes to animorphing.

Elementals

Once again they all sound like great character's. I love you're choices of Titan enemies. It's nice to see Slade won't be the only old enemy they have to face.

Oh Gods yes to the spoilered character in Supernaturals, my favorite Teen Titans character might make an appearance!

Also, I'm interested in Gnarl and Grimoire, they sound like they might be a hoot as t'were.

Lookin' good! Can't wait to see how you include all of these characters (if you do)

1558125

If your including characters that have survived from the previous universe you definitely need to include Larry. He the kind of fanboy that would follow Robin over into the next universe.

Is there gonna be a character list V3?

I got another idea, if you want to hear it. And this time, it's actually a group!

1663363 we can only hope. (so most probably)

Would love to see Character List V3. :D

-Powers

1788676

I concur with this