So far, there are six confirmed characters; Superman, Batman, Wonder Woman, The Flash, Harley Quinn, and Solomon Grundy.
Now onto my ideas, who I think they should be in this game, how their gameplay would work, and all in no particular order:
Green Lantern (Hal Jordan):
Should I really explain as to why he should be in? Green Lantern is one of the most iconic characters in the DC Universe, and it would simply be a sin to leave him out of anything that involves the entire DC Universe.
The Green Lantern power ring is said to be one of the most powerful weapons in all the DC Universe, and that should be made of notice in the game. Almost every one of Hal Jordan's special moves should involve the ring, making constructs of Hammers, Fists, and more.
With the New 52 relaunch, Aquaman has a fresh new vibe. Not only is it established that Aquaman is important withing the DC Universe, but it is also hammered into to casual fans that he is not worthless. Appeariing in this game would give Aquaman some much-needed attention.
Unless every stage in the game took place next to a body of water, I don't think that Aquaman would be able to call upon the sea life in the middle of combat. Instead, Aquaman would use his trident as a weapon, and conjure up water to blast opponents.
Even though no where near as popular with audiences like Superman and Batman, Cyborg somehow found his way into being a founding member of the Justice League for The New 52, and as a member of this new league, I think that Cyborg deserves a spot in this game.
Cyborg has the abilities of many Super Heroes in fiction, including super strength and endurance, but he is also armed with Sonic cannons that are integrated into his body. Maybe his ability to hack into computers would make a good gameplay mehcanic too.
Yet another well-known member of the League, Green Arrow would be an interesting gadget-based character to use. He also has his own upcoming live-action TV show.
Arrow would use all sorts of arrows, from the standard piercing arrows to frag arrows. He would also have some fist-fighting, but his bow would be his primary weapon in any sort of fight.
Hawkman (Carter Hall):
Let me say one thing clear: Hawkman would be perfect for this game. Hands down. He has everything needed for a DCU game made by Mortal Kombat: a fighter's spirit, hot temper, and plenty of armor to add on to. Not to mention his axe and gauntlet for weapons.
Hawkman would be able to fly, use his weapons to attack, and be a badass. Seriously Netherream, put him in this game, he is perfect.
If you are ever called "The Most Powerful Being in the Universe" by the Man of Steel himself, then you must be important. And that is Martian Manhunter. He has all sorts of powers, and it would be put into great use for a fighting game. Not to mention being an important member of the Justice League.
J'onn basically has all of Superman's powers and more. But he needs to be toned down in some way to make sure he isn't just an upgraded version of Superman.
Blue Beetle (Jaime Reyes)
Certainly and oddball choice, considering Jaime Reyes himself has very little popularity outside of comic readers, but i would like Jaime Reyes to be in more video games. Sure, the fact that he is a teenager would be a little distracting, but it should be rather obvious that life as a teenage Superhero in the DCU is pretty much living hell. So I think Jaime can withstand a game made by the people who allow the dismemberment of the human body in the most imaginative ways possible.
The scarab that serves as Jaime's armor can also manipulate itself into various weapons, like Sonic guns, wings, and blades. It's sort of like the Green Lantern ring, if it had a mind of it's own and you couldn't take it off.
Yes, his name is not 'Captain Marvel' anymore, mostly do to the fact that there is another superhero named Captain Marvel, which is owned by a another comic book company called Marvel (how marvelous). But the fact that Captain Marvel made it into Mortal Kombat vs. DC Universe I think is enough for the fact to return for a sequel.
His gameplay could be similar to MKvDCU, with a lot of lighting-based attacks. He should also be able to utilize flight too.
The original Robin, Dick Grayson has moved on to make a big name for himself as a full-fledged Superhero. He had plans to be in MKvDCU as a DLC character, but any plans of that were scrapped. Making Nightwing a well-deserving candidate for a character spot.
Nightwing wields two batons for combat. He should be able to make full use of them in-game.
Villains and Antiheroes:
Being Superman's arch-nemesis, as well as being a playable character in MKvDCU, Lex deserves being in this game. Heck, I think he appears in he trailer, being blasted by Superman's heat-vision.
Lex is equipped with a Power Suit (which so makes him not like Iron Man) that is armed with different types of weapons. Including missiles, flamethrowers, and jet boosters. Not to mention it gives him super-strength to boot.
Again, an obvious choice. Being one of the most iconic villains ever, The Joker simply has to appear, especially because Harley Quinn is appearing in it.
Most likely the "Joke" character of the game (har, har), the Joker has all the gag-based weapons he is known for: razor-sharp poker cards, lethal hand buzzers, and a false gun.
Iconic, again, as well as another female character to play as besides Wonder Woman or Harley Quinn.
She has razor-sharp claws, a whip, and extreme reflexes. All should be considered. I know I'm stating the obvious, just bear with me.
Gun-wielding characters usually get alot of flack in fighting games *cough Stryker cough* but Deathstroke is a guy who uses a gun in an attempt to take down heroes. The arch-nemesis of the Teen Titans, Deathstroke is also from MKvDCU and should again make the transition into Injustice: Gods Among Us.
Deathstroke is a master of both gun & swordplay. Using his sword full time, and pulling out his pistol and Uzi whenever called upon by the player.
As the god-like ruler of a planet that is pretty much hell, Darkseid is pretty much destined to beat the crap out of superheroes. Being one of the most powerful beings in the DCU, Darkseid would likely be one of the last characters you unlock, or it's likely that he won't even be playable, just have him as a boss battle similar to Shao Khan from Mortal Kombat.
Darkseid is ridiculously powerful, with his omega beams, super strength, and other god-like powers, Darkseid is a foe that deserves no messing around with. It's even possible that he can just use his powers to win, no strategy needed.
He killed Superman. That is all you need to know as to why Doomsday is so well-known. He can survive anything and come back to life. An imposing figure of massive stature and power. Doomsday would bring alot in terms of powerful characters.
Doomsday is primarily a power-based character, being without any reasoning, and brutal, his fighting style should reflect that.
The Batman equivalent of Doomsday, the main difference is that Bane has alot more brain, and he broke the Bat's spine. He also has a serious venom addiction. While relatively new, Bane has proven himself to be a popular villain in Batman's rouge gallery.
Bane has alot of power-based moves. But they are more martial-arts trained as opposed to characters like Darkseid and Doomsday.
Our final member of the "heavyweight" group of fighters including Grundy, Doomsday, and Bane, is Flash villain Gorilla Grodd. He is a gorilla who is granted intelligence and psychic powers by an alien spacecraft. While not as strong as other power characters, he would add alot of variety to the character roster. And let's face it, it would be just plain awesome to play as a psychic gorilla in any video game.
While not as strong as the other "power" characters on this list, Grodd makes up for it by using his psychic powers instead. He can control the minds of other characters and make them do what he wants them to do.
Ruler of Kahndaqi and enemy of Shazam, Black Adam is a villain-turned antihero. He has all the powers of Shazam, but gets them from Egyptian gods as opposed to Greek gods. He is an iconic villain who has alot of fans.
His playstyle would be similar to Shazam, but with a few tweaks to make him different.
Ra's al Ghul:
Being an immortal assasain, Ghul has a rather complex motive: to save the earth by killing all the people on it. At first it seems rather odd, but it is that magic that makes Ra's al Ghul such an interesting villain. His most prominent nemesis is Batman, who sees him as both an enemy, but also a potential ally.
Ra's al Ghul relies on his assassin skills to defeat his enemies. Armed with a sword and surprising agility for someone of his age.
Now onto a Green Lantern villain; Sinestro, leader of the Sinestro corps. Sinestro is the arch-nemesis of Hal Jordan, and would make a good rival for him to face.
His power ring runs on fear, as opposed to Hal's which runs on willpower. Which would give him a similar play style to Hal Jordan.
Not exactly the one who comes to mind when you think DC, but I would personally really like to see this villain in the game. He is also a rage-inspired character like Hawkman, but Atrocitus is literally fueled by rage, being the leader of the feral Red Lantern corps.
Again having similar construct-based attacks like Green Lantern and Sinestro. But Atrocitus is much more physically powerful. He can also use his regurgitated blood as a short-ranged attack that stuns enemies in place.
Our final character on this list is the intergalactic bounty hunter Lobo. He is simply a character who is popular and after making this very long list of characters, I really don't care anymore.
Lobo has a lot of weapons at his disposal including guns. And that's all there is to him.
There you have it, my list of characters that I would like to see in the upcoming video game Injustice: Gods Among Us. Hope you like my ideas!