Spider-Man: Brand New Day ending explained — who does Sadie Sink play, how many post-credits scenes are there, and more on the new Marvel movie

Is Sadie Sink [spoiler]? And how does Brand New Day's ending set up future Marvel movies?

by · TechRadar

News By Tom Power Published 31 July 2026

Tom Holland is back as Peter Parker and his superhero alter-ego in Spider-Man 4 (Image credit: Sony Pictures/Marvel Entertainment)

Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter

Spider-Man: Brand New Day has finally swung into theaters worldwide — and I bet you've got questions about Tom Holland's latest Marvel movie.

Haven't seen it yet? Read my Spider-Man: Brand New Day review for a spoiler-light insight into the newly released film. Then, bookmark this page, go and see it, and come back to carry on reading this article, because I'm not kidding when I say full spoilers immediately follow for Spider-Man: Brand New Day.

Of course, if you have watched it, by all means scroll on — it's worth the read, I promise!

Latest Videos FromTechRadarWatch full video here:

Does Sadie Sink play Jean Grey in Spider-Man: Brand New Day?

There have been myriad rumors about who Sadie Sink is playing in the MCU (Image credit: Sony Pictures/Marvel Entertainment)

Yes. One of the worst-kept secrets in Hollywood is finally confirmed about 70 minutes into Spider-Man 4: Sink is playing the Marvel Cinematic Universe's (MCU) version of iconic X-Men member Jean Grey.

It's a reveal that's been a long time coming. Sink was first rumored to appear in Spider-Man: Brand New Day last March, so we've had to wait 16 months to learn which Marvel character she was actually playing.

Of course, there's been all manner of speculation about the identity of her character, with everyone from Mayday Parker — aka Peter Parker and Mary Jane Watson's daughter in the comics — and Typhoid Mary to Firestar and Shathra mentioned as potential candidates.

Now that we know Sink is playing Grey, she's a shoo-in to appear in Marvel's new X-Men movie (more on this later). Her next outing as Jean Grey is expected to be in Avengers: Secret Wars, though, so we'll see her again when that film arrives next December.

Get daily insight, inspiration and deals in your inbox

Sign up for breaking news, reviews, opinion, top tech deals, and more.

Contact me with news and offers from other Future brandsReceive email from us on behalf of our trusted partners or sponsors