Peacemaker Season 2 has only one episode left to air before the season concludes, and it might include cameos of other DCU characters. We have already seen Nathan Fillion, Isabela Merced, Sean Gunn, and Nicholas Hoult guest-star in Peacemaker Season 2 as Green Lantern, Hawkgirl, Maxwell Lord, and Lex Luthor, respectively. Thus, it won't be surprising if more DCU characters make a guest appearance in the season finale.
Peacemaker Season 2 episode 7, Like a Keith in the Night, ended with the alternate dimension's Keith and Auggie Smith finding out that the Chris they see murdered their Chris and is from a different dimension. Harcourt, Adebayo, Adrian, and Economos are also exposed to being from another dimension. The episode ended with Auggie dying, Keith getting fatally injured, and the 11th Street Kids and Judo Master escaping the dimension, closing the QUC, and surrendering to A.R.G.U.S.
Peacemaker Season 2 finale, Full Nelson, will release on October 9, 2025, and will conclude the season and probably feature a few cameos. Let's take a look at all the cameos that might happen in the season finale.
Peacemaker Season 2 Finale Cameos that we might see
As mentioned earlier, there have already been a few cameos in Season 2, and thus, a few can be expected in the finale as well. Besides, James Gunn, in an interview with Entertainment Weekly ahead of Peacemaker Season 2's release, had said,
"You've seen what we call the QUC, the Quantum Unfolding Chamber, in the first season of Peacemaker, and we see more about that technology in Superman. The QUC is the center of the story in Peacemaker season 2... We see a lot of different characters from Superman in the [season], [including] Isabela and Nathan and Sean, and then we see a bunch of other characters later on in the season from other parts of the DCU and from Superman. There might even be one really, really, really big cameo near the end of the show."
Thus, it is safe to say that we might see anyone from the DCU appear in the season finale. A lot can happen in the finale, as we saw Chris take the blame for the interdimensional travel, and Keith from Earth-2 being alive, which means he will likely attempt to take revenge for the death of his father and brother. Amidst all this, there are a few characters who might be featured in a cameo.
Superman/Clark Kent might make a cameo in the finale. We have already seen Lex Luthor in the show, whom Superman put behind bars, and thus, the Kryptonian superhero might just appear to help out Chris. Superman's cousin, Kara Zor-El, aka Supergirl, might also make a cameo appearance in the season finale ahead of her own film, Supergirl (2026). She might not showcase her power too much, but Gunn might just give us another peek at her.
In Peacemaker Season 2 Episode 1, The Ties That Grind, a strange humanoid creature appeared in the QUC when Chris let out Eagley to fly there. This creature has appeared a few times this season and was often seen disposing of small vermin creatures. James Gunn posted a picture of the vermin props on X ahead of the season finale, saying,
“The vermin are back tomorrow night on the #Peacemaker Finale on @StreamOnMax. But they’re not the only little friends we’re gonna see…”
Thus, we will see the vermin and possibly get more insight into who these creatures are. This species might just become an important part of DCU and introduce a new character. But nothing can be said for sure since the creature does not exist in the DC comics as of now. Besides, the preview for the Season 2 finale also shows A.R.G.U.S. sending the 11th Street Kids and other agents to different portals through the QUC to look for new land and resources. We see the agents discover strange worlds, and thus we might see the world the vermin hail from.
Since Gunn said "little friends," we might see Krypto make an appearance. He might just team up with Eagley and give us yet another scene of the little friends coming to the heroes' rescue. Lois Lane might also make a cameo appearance in the finale, since she is, after all, a reporter and might somehow fit into the story.
Peacemaker Season 2 finale will release on HBO Max on October 9, 2025.
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