The Knightmare future of Zack Snyder's Justice League involves several villains, and their presence was needed for the Knightmare to work. Zack Snyder's DC Knightmare timeline was first teased in Batman v Superman: Dawn of Justice, with Bruce Wayne (Ben Affleck) seeing a vision of the future in which Superman has turned against the world. The release of the Justice League Snyder Cut in 2021 further explored the Knightmare in its epilogue, with Batman shown continuing to lead his resistance.
The Knightmare was intended to be a major component of Snyder's Justice League sequels, and details about it have gradually emerged. The essence of the Knightmare was to involve Darkseid (Ray Porter) killing Lois Lane (Amy Adams) in the Batcave, then using the Anti-Life Equation to bring Superman (Henry Cavill) under his control. Despite having only been shown twice between Batman v Superman and Zack Snyder's Justice League, the Knightmare remains a topic of intense interest in the #RestoreTheSnyderVerse fan push.
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The Knightmare scene in the Snyder Cut also showed the desperation of the situation, with Batman forced to recruit Deathstroke (Joe Manganiello) and the Joker (Jared Leto) in the fight against Darkseid. As a basic scenario of heroes and villains forced to unite against a common enemy, the Knightmare certainly provided a unique story framework. In fact, the arc of Snyder's DC films shows that the Knightmare actually needed the hero-villain alliance for the story it was telling.
After Darkseid brings Superman under his control with the Anti-Life Equation, Earth is left decimated in the conquest by Apokolips. Wonder Woman (Gal Gadot) and Aquaman
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