WARNING: The following article contains spoilers from Dark Knights of Steel #6, on sale now from DC Comics.
Dark Knights of Steel #6 jumps away from the immediate aftermath of Superman's betrayal of Batman to instead focus on the brewing conflict between the book's three kingdoms. This includes Constantine's mourning of King Jefferson (this world's equivalent of Black Lightning), who perished at the hand of Zala Jor-El in the third issue. In his grief he summons Etrigan, but not to speak to the demon but instead his host, Ra'as al Ghul. Ghul agrees to help bring back Jefferson's son, the prince Jacob. But in exchange, he asks Constantine to reveal the location of "the Titans."
This is a clear reference to the Teen Titans, foreshadowing the appearance of this world's version of the team. But the issue with that is that it will be this world's version of the Titans. As an Elseworlds story, Dark Knights of Steel has shown a penchant for remixing and reimagining the various characters of the DC Universe. Its Green Lantern isn't Hal Jordan, and instead a combination of Lex Luthor and the Joker. Etrigan himself is a good example, bonded to Ra'as al Ghul instead of his usual host. Let's go through the likely candidates for the team, and figure out whom they might be in the world of Dark Knights of Steel.
Damian Wayne as Robin Is a Reason for Lying Low
"Robin" is an ambiguous character, defined not by any set of powers but instead their previous association to Batman. While it'd be nothing out-of-the-ordinary for one of them to appear as a member of the TItans, there's only one possible candidate. This world's Dick Grayson, Jason Todd, Tim Drake, and Stephanie Brown have all appeared as members of Batman's coterie. That means none of them are off in-hiding with the Titans. But Damian is nowhere to be seen, and, if his origin is the same in this world, is Ra'as al Ghul's grandson. As the potential heir to the head of the League of Assassins, Damian's membership on the team gives his grandfather a good reason to be chasing after them.
Beast Boy's Powers Are Present, but Not Garfield
As seen with the examples of Green Lantern and Etrigan above, Dark Knights of Steel does a lot of work when it comes to distinguishing between a character's role and their identity. As such, it's necessary when looking at any individual character to figure out if their role and identity will be connected. Any character could claim the mantle of "Beast Boy," or some more fantasy-inspired version. This is an easy change to make, and helps the team feel different while still preserving some core similarity. As such it's likely a character with shapeshifting powers will appear, but not go by the traditional name of Garfield Logan.
Cyborg Could Be A Magical Automaton
With the exception of the pod that brought Superman and his parents to Earth, Dark Knights of Steel has been bereft of any example of highly advanced technology. It's a medieval setting, and as such magic is far more likely to be the relevant factor. But this doesn't mean the character Cyborg has to be absent. Plenty of characters in comics (including Tezzeret from BOOM! Studios' Magic series) use magical prostheses, which would allow the character to still feel like Cyborg. So while Victor Stone would still appear, his role would change to match the setting around him.
Raven Remains The Same
When Dark Knights of Steel introduced its version of DC's Trinity, it almost felt like the set-up and payoff to a joke. Superman has a whole different outfit, and grew up with the loving care of his parents. Batman is even more different, a half-Kryptonian more comfortable wielding a sword than a Batarang. And Wonder Woman is... completely the same. That's because Wonder Woman is already a character from a world of swords and sorcery, usually more of a fish out of water in the modern world. Raven is the same way. She's a half-demon sorceress who channels dark powers from another world. No changes are necessary.
No Sign of Starfire
At first glance, Starfire is similar to Raven. Her powers aren't iconic enough to give to another individual (like with Beast Boy), but they're also not easily retooled as magic like Cyborg. There's not even a need to change much about her. Being an alien from another planet isn't out-of-place for Dark Knights of Steel's setting. But there is one issue — it'd make Superman less special. The alien and his Kryptonian family have a whole prophecy describing how their arrival will bring about the end of the world. Throwing in another alien visitor in the form of Starfire cheapens that, so it's likely the character will be absent, replaced by another member from the Titan's storied roster.