Regime Superman

Regime Superman is the main antagonist of the Injustice franchise, serving as a main antagonist in Injustice: Gods Among Us and comic series, as well as the deuteragonist-turned-final antagonist of Injustice 2 and the overarching antagonist of the comic series of the same name.

He is dark twisted version of Superman and the best friend turned arch-nemesis of Bruce Wayne/Batman. He was voiced by George Newbern, who also played previous Superman incarnations and Sephiroth in Final Fantasy VII.

Debated Validations

 * He has a lot of remorse caring deeply for Lois and their unborn child. Being sad for killing them, and seeming to have felt sadness missing his past heroical honorable self.
 * He has many cooling-off periods no longer posing as a threat. He shows grief seeing Batman die on the Arcade Ending for Damian Wayne, and he also tries to create a new dimension and get other allies with him to serve and protect. Yet, these don’t hold up against his villainy he has already done. Not to mention, abandoning other worlds and dimensions he may have not gotten to yet or chose to disown some if they don’t agree with him. As he killed heroes like Green Arrow and Shazam.

What made him heroic?

 * He started off with noble traits being a tragic anti-villain. He tried to save Lois and many people from Joker not realizing he has killed Louis and their unborn child.

What made him villainous?

 * Not only does he kill many villains along the way many of which do not actively pose as threats whatsoever anymore than they did, alongside heroes from the regime who choose to stand up against Regime Superman who unfortunately got killed in the processes. Thus making these moments a huge Moral Event Horizon.
 * He killed many superheroes like Green Arrow and Shazam.
 * His mercilessly brutal murder of Shazam elaborates his capability of being willing to cross the Moral Event Horizon harming a child who simply doesn’t agree with him with his extremism who never has even posed as a direct threat.
 * He killed the Joker who no longer posed as a threat.
 * He revealed Batman’s full name.
 * He and Damian Wayne has tried to kill many criminals in Arkham.
 * If he defeated Brainiac on an Arcade Ending it would lead to him abandoning other dimensions and sticking to building up his own to recruit some allies from other dimensions instead.
 * He used Braniac’s ship to Braniac-ify Batman, and presumably do so to Supergirl.
 * Barely shows any redeemable traits whatsoever as much for most endings.

Trivia

 * Him and Wonder Woman would be the only Fallen Heroes who count as Near Pure Evil.
 * Similar to Light Yagami he has a type of Lawful Evil alignment. Being of dictatorship and following a type of order to enforce upon their respective in-story universe cities.