Injustice: Infinity War

Injustice: Infinity War is a fictional sequel for Injustice 2. Its events are set after Batman managing to defeat Superman.

Summary
In the alternate world, a being named Thanos found out that no matter how powerful is an empire, there's always someone who manages to destroy it. Then he decides to invade each universe in hopes of recruiting people who simply seek to rule the worlds and create a new Black Order so he can wipe out half of the universe once and for all.

Plot
Some years after Superman's banishment to the Phantom Zone, Batman leaves the Justice League under The Flash and Green Lantern's commands. They lead a benevolent force never seen on the earth. Unbeknownst to them, their world is visited by Thanos who seeks new recruits for the Black Order.

While Green Lantern trained the Justice League, The Flash patrolled Central City and found out that three Regime members escaped. Then he sets off and fights Raven, Cyborg and Robin. After managing to defeat them, Barry is greeted by a person who came from another dimension and introduces herself as Kagome. After testing and defeating her, he finds some potential to become the new Green Arrow. Then both arrest the Regime members and they go to the Batcave.

Meanwhile in Metropolis, Supergirl

Heroes

 * Batman
 * The Flash
 * Green Lantern
 * Harley Quinn
 * Supergirl
 * Firestorm
 * Blue Beetle
 * Green Arrow (Kagome)
 * Inuyasha
 * Black Canary
 * Master Kombat (Liu Kang as Shazam)
 * Hiro Hamada
 * Green Ranger
 * Ben 10
 * Mega Man
 * Roll
 * Captain America
 * Spider-Man
 * Hulk
 * Thor
 * Namor
 * Storm
 * Rogue
 * Gambit
 * Shadowcat
 * Sash Lilac
 * Carol Tea

Villains

 * Superman
 * Wonder Woman
 * Black Adam
 * Robin
 * Cyborg
 * Wonder Man
 * Black Widow
 * Wonder Man
 * Black Panther
 * Iron Man
 * Black Cat
 * She-Hulk
 * Crimson Viper
 * Bass
 * Emma Frost
 * Jade
 * Colossus
 * Firestar