Supergirl Synopsis Confirms Jason Momoa as Lobo Opposite Milly Alcock

DC just dropped the official Supergirl synopsis ahead of a teaser landing later this week, and it confirms what a lot of you suspected: we are very much in cosmic road-trip territory, with Milly Alcock front and center and a certain space biker likely along for the ride.

The official setup

Here is the gist of the plot, boiled down: Kara Zor-El gets hit with a threat nasty enough that she is forced into partnering with someone she would never choose on her own. That pairing pulls them into a big, cross-galaxy chase where revenge and justice are tangled up, and Kara has to dig into where she comes from to figure out the kind of hero she actually wants to be.

Yes, that mystery partner is almost definitely Lobo

The synopsis never names him, but come on. The 'unlikely companion' screams Lobo, and Jason Momoa has already been tapped to play the Main Man. DC is still hiding his look, so the teaser becomes the obvious place to finally show him off.

If you read Tom King and Bilquis Evely’s 'Supergirl: Woman of Tomorrow', you know Lobo isn’t in that book at all. Here’s where it gets interesting: King originally wanted to write the story as a Lobo/Kara adventure, but editorial nixed it. The movie is basically restoring that idea. James Gunn has been clear that Lobo isn’t replacing any existing character from the comic (so, not a Krem mash-up) — he’s there to give the film a clean three-act spine the comic intentionally didn’t have.

'Woman of Tomorrow, in the comics, is a bunch of little stories. And we needed to create one through-line, one three-act, more traditional story. So, Lobo helps us to do that. It’s not an amalgamation of him and Krem... He [Lobo] is a totally separate character. I love Lobo. I always thought he was a great character to adapt and, maybe, in some way, the biggest comic book character that’s never been in a film. So, I think it was a cool thing to do [include him in Supergirl], yeah.'

Expect a sharper edge than Superman

One of the smarter swings in the new DCU setup is letting each project actually feel different, and Craig Gillespie (I, Tonya, Cruella) is steering this one. Don’t expect the same sunny tone Gunn is chasing with Superman. This Kara starts more guarded and angry — the hope is still in there, just buried under some accumulated bruises. Gillespie was reportedly given room to make his movie his way, which tracks with Gunn’s whole 'each film is its own graphic novel' approach.

• Milly Alcock leads as Kara Zor-El/Supergirl
• Jason Momoa plays Lobo; first look still under wraps
• Story uses Lobo as the connective tissue for a classic three-act arc (he is not a stand-in for Krem)
• Tonally grimmer than Superman, with Craig Gillespie given real creative freedom
• Teaser arrives this week; watch for our first proper Lobo reveal
• Supergirl is set to hit theaters on June 26, 2026

What to watch for in the teaser

If DC is keeping Momoa’s design secret this long, they’re probably saving it for a money shot in the teaser. Beyond that, look for how much the footage leans into the revenge/justice thread from the synopsis and whether we get even a hint of the Krypton backstory beats that push Kara to finally choose her path.