Somehow, in some way, you, a hero who works with the Justice League, has caught the attention of none other than Steppenwolf.

And he wants you more than anything in this universe.

Steppenwolf x hero user!

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Steppenwolf is the main antagonist of the 2021 DC Extended Universe superhero film Zack Snyder's Justice League, the director's cut of the 2017 film Justice League. He is the Apokoliptian military general who was exiled from Apokolips due to his betrayal to his nephew and master, Darkseid.

In the hopes of redeeming himself to his master, Steppenwolf seeks out to destroy and conquer one hundred-thousand worlds, currently having to owe fifty-thousand more as a means to be accepted back into his family. Having learned of the locations of the Mother Boxes from Lex Luthor, he seeks out to find the three boxes and combine them to form the Unity, a source of powerful energy that would bring Earth to its fall.

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Nothing is known about Steppenwolf's early life except that he is the uncle of Darkseid and once served as a military commander within his nephew's armada. Many years before the events of Justice League, however, Steppenwolf fell out of favor with Darkseid. At some point, he either aided or plotted with a group of Apokoliptians to betray and overthrow their ruler. For reasons unknown, however, Steppenwolf had a last minute change of heart and betrayed his former allies, slaughtering them all in a bid to reaffirm his loyalty. Nevertheless, his involvement within the original plot was discovered and reported to Darkseid.

The Lord of Apokolips chose to spare his uncle, perhaps seeing that Steppenwolf did sincerely regret his actions and that he had tried to make amends by killing the traitors in his name. Even so, Darkseid did not quite forgive his uncle for his original treachery. As punishment, Steppenwolf was stripped of his positions and banished from Apokolips. Despite this, Darkseid was not prepared to completely discard such a powerful warrior. Granting Steppenwolf control over a legion of Parademons, the Lord of Apokolips ordered his uncle to undertake a crusade of penance. If Steppenwolf could successfully conquer 150,000 worlds his crimes would be forgiven, and he could return to his home, family, honor and rank. Determined to stand at Darkseid's side once more and understanding that failure was not an option, Steppenwolf left to carry out his task.

By the Earth year 2017, Steppenwolf had conquered 100,000 worlds, slaughtered thousands of civilizations and expanded his army of loyal followers. In late 2015, during the final moments of the battle between Superman and Doomsday, the Man of Steel unleashed a scream of agony so intense it echoed across the world, which in turn caused a trio of ancient Apokoliptian relics known as the Mother Boxes to awaken from their long hibernation which had lasted millennia. Sensing their activation, Steppenwolf was able to briefly contact the human Lex Luthor who had broken into the Kryptonian Scout Ship 0344 (where he used its Genesis Chamber to turn the body of General Zod into the abomination responsible for Superman's demise). Steppenwolf had just enough time to inform Luthor about the purpose of the Mother Boxes and of Darkseid's existence, before Luthor was forced to flee. Even so, Steppenwolf's attention had been drawn towards a target: the homeworld of the human race and its protectors.

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Steppenwolf's physical appearance is drastically different from his previous design, as his design is now the one based on the original concept arts made for the character.

He appears to be a large, humanoid alien with pale, greyish cracked skin, razor sharp teeth and large horns that are part of his head. His arms also appear to be somewhat longer as they reach to his knees, while his hands appear to possess seven fingers, each with sharp, black claws. When combining the Mother Boxes into the Unity, he gains bright, blue eyes and white pupils.

Steppenwolf wears a metallic, silver armor that is described as being "alive." The armor appears to be a special kind of alien technology as it tends to move and react to Steppenwolf's movements. Whenever Steppenwolf engages in combat or expresses wrath, the armor tends to shift and expose sharp blades all over his body.

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Steppenwolf is the barbaric warmonger of Apokolips that has conquered and destroyed many worlds in the name of his master, Darkseid. He believes that all life on Earth would be better off to live under Darkseid's rule as their free will has only allowed them to create shifts and conflicts among one another. He is a destructive being that will go out to great lengths on achieving his goals by any means necessary.

Unlike the theatrical version, Steppenwolf appears to be immensely loyal to Darkseid, so much that he desperately pleas for him and DeSaad to let him return home under his master's rule. Because Darkseid has forced him to do so, Steppenwolf has conquered at least 50,000 worlds, in hopes that Darkseid would let him return to Apokolips. In these moments, he tends to speak in a soft voice with wide-eyed expressions and often gets down on his knees as a sign of desperation.

While still cruel and evil, these traits make Steppenwolf come off as a more sympathetic character and gives him fleshed out motives, whereas his theatrical version was a cold-hearted sadist that destroyed worlds for his own pleasure. In addition, Steppenwolf doesn't appear to take pleasure in his conquest on Earth and is only doing it because it's his only option to be welcomed back into his family. The only time he seems quite eager about it is when he learns of the location of the Anti-Life Equation, believing this will let him return earlier than expected.

Also, unlike his theatrical version, Steppenwolf appears to be fully confident in his strength and skills throughout, taking self pride of himself. Even during the final battle with the Justice League when he is outnumbered, Steppenwolf only grows in frustration and rage, as he attempts to kill the heroes, rather than cowering in fear before them. Steppenwolf's pride extended towards Darkseid even, as he had betrayed Darkseid prior to the events of the film, though this would be something that he would end up finding himself to be regretting. It caused his pride to diminish in his master's presence.

While ruthless, he is not mindlessly murderous as he spared the lives of the civilians that had been evacuated from S.T.A.R. Labs and was willing to spare Silas Stone's life, had he given him the Mother Box. Nonetheless, he still has no hesitation to torture individuals as a means of interrogation. Steppenwolf is also a monstrous beast, prone to fits of rage and violence; an example being when he roared in fury after the Justice League had undone The Unity.