Peacemaker Season 2 has landed, and its blend of biting humor, over-the-top action, and surprising emotional depth has critics and audiences alike hooked. But there's a huge mystery afoot: James Gunn, the show's creator and DC Studios co-CEO, has made the unprecedented decision to withhold the final three episodes from reviewers. His reason? To protect major, universe-altering surprises.
It's a move that's sent DC fans into a frenzy of speculation. What could be so big that it warrants such extreme secrecy? The show has already established itself as a foundational piece of the new DC Universe, and whatever happens in those final hours is bound to have massive implications.
While we're having fun with these predictions and don't claim to have any inside information, we've ranked the five most talked-about fan theories from most to least likely, based on the established lore, behind-the-scenes whispers, and the show's own plot points.
Theories Ranked from Most to Least Likely:
1. The Man of Steel Makes His Mark: A Superman Cameo
This is, by far, the most likely theory, and for good reason. James Gunn has already confirmed that Peacemaker Season 2 takes place after the events of his Superman film (2025). We've already seen new DCU characters like Maxwell Lord, Hawkgirl, and Guy Gardner pop up in the early episodes. Gunn has even teased that there will be "one really, really, really big cameo near the end of the show." The narrative groundwork is already laid with ARGUS tracking "Luthor incidents" from the Superman film.
For Peacemaker's story to truly connect to the larger DCU, a direct confrontation or interaction with the new Superman (played by David Corenswet) would be the ultimate payoff. It would not only validate the show's place in the new timeline but also provide a shocking, momentous ending that would dominate the pop culture conversation.
2. A Battle of Will: The Grand Entrance of the Green Lantern Corps
With Nathan Fillion's Guy Gardner already confirmed as a part of the "Justice Gang" in the show, the path is wide open for a much larger Green Lantern presence. The DCU is also set to get its own Lanterns series, and Peacemaker could be the perfect launching pad. The alien in the quantum unfolding chamber, the cosmic threats, and the presence of a Lantern on Earth all point to this.
An all-out arrival of the Green Lantern Corps would be an epic spectacle and a key moment in setting up the cosmic side of the DCU. It's a huge reveal that makes sense within the show's existing story and has direct ties to a confirmed future DC project.
3. The Scarab's Buzz: Blue Beetle Joins the Fray
The theory of a Blue Beetle cameo is gaining significant traction. James Gunn has already stated that Xolo Maridueña's Jaime Reyes "fits in very nicely" to the new DCU. Since Peacemaker is a prime vehicle for introducing new characters, it would be the perfect opportunity to bring Blue Beetle into the fold without needing an entirely new origin story.
A Blue Beetle cameo would feel both organic and earned, given the show's focus on grounded, human-level heroes. While it might not have the cosmic scale of a Green Lantern or Superman reveal, it would be a major moment for the character and would signal that the new DCU is embracing its more recent cinematic history.
4. A Father's Rage, A Son's Return: Rick Flag is Alive!
While highly dramatic and emotionally resonant, this theory falls slightly lower on the list because it requires a more convoluted explanation. We know that the multiverse exists in the show, and we've already seen an alternate, living version of Chris Smith's brother, Keith. It’s not a stretch to think an alternate version of Rick Flag Jr. could also exist.
However, bringing back a character who was so definitively killed in the previous film could be a risk. While the multiverse offers a loophole to Gunn's "no-resurrection" rule, it still might confuse casual viewers. Still, the emotional stakes are incredibly high, and a confrontation between the two Rick Flags—one alive, one dead—would be a gut punch that Gunn would love to deliver.
5. Blast from the Past: A Multiversal Crossover with an Old DC Property
The multiversal aspect of Peacemaker Season 2 is already a key plot point, as Chris Smith finds himself in an alternate reality where his brother Keith and father Auggie are still alive. This isn't just a random reality; it's a prime opportunity for a shocking crossover.
What if this isn't just an alternate Earth, but one that fans are already familiar with? The final episodes could reveal that Peacemaker has inadvertently found himself on the world of a beloved former HBO Max DC show like Titans, Doom Patrol, or Stargirl. All three of these series had their own dedicated fanbases and established continuities that concluded in recent years. A major twist could see Peacemaker interacting with the Titans, a Doom Patrol that's now a full-fledged team, or the Justice Society of America in the world of Stargirl.
This would be a brilliant way to surprise audiences and give those characters a new lease on life within the DCU's multiverse. It would be an unprecedented, meta-textual event that would instantly become a viral moment, providing a perfect reason for Gunn's extreme secrecy.
Whatever James Gunn has planned for the final three episodes, it's clear that it's something special and significant. The fact that he's going to such lengths to prevent spoilers only amplifies the excitement and anticipation.
What do you think is hiding in those secretive final episodes? Share your own wild theories in the comments below, and get ready to have your minds blown when Peacemaker Season 2 concludes!