Disclaimer: I own nothing.
References from anything related to DC will be used and some elements from other genres. Such as Archer and Blue Bloods.
Injustice Beyond
Chapter 1
Three things. That's all it took for the balance of power to shift in a horrifying direction. The death of pregnant reporter Lois Lane Kent, the nuking of Metropolis, and the death of The Joker. That's what started it all. The ruled is now ruled by an iron grip of a Man of Steel.
Regime Year 22
A lot has changed since Year 1, all metahumans are registered if they don't they are subdued and imprisoned. All vigilantes are outlawed. Anyone discovered to be a vigilante are arrested they are given a choice join the regime, be imprisoned or are killed. No one has joined.
The Batman and the Insurgency have not been seen or heard from in over a decade.
The Regime consists of only five "superheroes" now. Superman, now known as High Chancellor, Wonder Woman, Superman's right hand as well as his second wife. Yellow Lantern, Hal Jordan, Aquaman, King of the Seven Seas. All but Wonder Woman have aged. There army consists of regime soldiers, blind loyal soldiers to Superman, if asked the Amazons and Atlanteans will assist if ordered by their monarchs. Asked, is not the right word, ordered is more like it. The Regimes rules are simple obey or die.
Four years ago, Superman and Wonder Woman announced to the world the birth of their daughter Lara-El. She lives on Themysicra.
But, what the world doesn't know is Wonder Woman's darkest secret. Almost no one knows it not even Superman. Wonder Woman's secret began during the early years of the regime. At the end of year one, she returned to the land of her birth to recover from surviving the nuclear explosion cause by the death of Captain Atom. She did not return to active duty until the end of Year 3.
The secret she has hidden for many years is that Lara is not her only child. Many years before her birth, Diana gave birth to twins, the eldest a boy and the youngest a girl. But, that is only part of the secret. The secret she has kept is that they are the son and daughter of Batman.
She has gone to great lengths to keep this secret.
Flashback
Year 1
"J'onn'' Superman states.
"Kal" the Martian Manhunter says.
"Why have you chosen to go against me "the Kryptonian says.
"Because I know what taking control of a planet feels to people. Let me show you." As the Martian makes telepathic contact with Superman images are shown of families torn apart, people killed. A civilization annihilated with only one survivor. Their connection is interrupted as Wonder Woman separates them.
"Get away" she says. "Are you okay" she says to Superman. He only nods.
"Diana stop" J'onn says.
"No, you stop. What were you doing to him "she says.
"I am trying to help him" he answers.
"No, you were trying to brainwash him."
"I am just showing him what his course of action will lead him" he says.
"He is doing what is right. He is doing what he should have done in the first place."
"He isn't. He's taking control of the world and frightening people with how far he is going."
"Man's World had their chance. They can't do anything for themselves. Either stand aside or join us" she says.
"No, this ends now." He charges at her grabbing her wrists. She fights back freeing an arm and punching him. He transforms his body and phases into hers.
"I know what you have done Diana. The blood you've split and the lies you've told. You admired and trusted Kal more than me because of how I looked. Perhaps I should do what you have done and just get rid of the problem." As he prepares to end it he realizes something as he is reading her thoughts "Wha…, Diana you kept this from Batman."
As he is distracted, she shouts, "Do it Kal. Burn meeee! Supermans eyes shine bright red as he shoots his heat vision at her mildly burning her, but horribly burn the Martian. As he is separated from her shouting "Arghhh."
As he is falling he disintegrates into ashes. Superman looks at what he has done and said, "What have I done?''
Wonder Woman states, "He was going to kill me, it was the only way."
As the two left, they do not see Batman having watched the whole thing from afar, he watches as J'onn becomes ashes and angrily says, "How could you?'' As he departs as well.