More on X-Men casting and when they’ll be revealed, plus Tramell Tillman rumored for the film and a Spider-Man: Brand New Day post-credit leak. That’s today’s Marvel related Barside Buzz roundup and we’ll begin with the tail end of a rumour we updated just yesterday. You can see the updated article in the related section below, but the gist was that Adam Driver is playing Mister Sinister and NOT Magneto.
Here’s the original post we covered yesterday from ApocHorseman and as you can see it also covers some other casting names he’s heard.
So sorry guys. Big mistake from my end but hearing Adam Driver is Sinister.
— Apocalyptic Horseman (@ApocHorseman) July 16, 2026
Bill Skarsgard is indeed one of the actors among a handful in the mix for Xavier. They’re aiming young.
Cooper Hoffman also is in the mix for Cyclops. He’s not the only choice though.
More soon. https://t.co/rYEydby6LA
However, the leaker had a little bit more to say as detailed in the posts below.
They’re down to a few choices. Very good chance they reveal everyone at SDCC. I think they’ll have the cast ready by then
— Apocalyptic Horseman (@ApocHorseman) July 16, 2026
Only Sadie and Adam are locked. Cooper and Bill are in the mix of a few guys for their roles. They haven’t been cast officially
— Apocalyptic Horseman (@ApocHorseman) July 17, 2026
Now the casting process would have to be absolutley flying along for a cast reveal to take place at SDCC. Apoc himself says there are still roles to be locked in. We then have Daniel RPK saying that the only thing he can add is that the cast are not due to be revealed at SDCC.
There will be no X-Men casting announcement at SDCC that much I know
— Daniel Richtman (@DanielRPK) July 16, 2026
As some fans suggested perhaps D23 this year would be a more achievable convention for this cast reveal. Apoc himself said that actually makes mush more sense than what he was told.
RELATED: Adam Driver Rumored To Be Playing [Mister Sinister NOT Magneto] In MCU X-Men Film | Barside Buzz
We have another source with some more X-Men casting rumors to add to the mix. This time from the folks at NPN, who claim that Tramell Tillman, who makes his MCU debut as Bill ‘William’ Metzger in Brand New Day, will also appear in the X-Men reboot. Which adds a little weight to my own theory that Metzger is the true villain of Spider-Man: Brand New Day.
Finally Daniel RPK posted on his Patreon that he heard the post-credit scene for Spider-Man: Brand New Day would have a space element to it. This comes on the back of reports it would directly tie into Avengers: Doomsday.
We then had a new account (Sukuna) which has some proven correct leaks for this film say that the scene has the Spider-Tracker (tech shown in the film) show Spider-Man as being ‘off-Earth’. The account was then suspended quickly, so we have no idea what to make of this one.
Add them all up and it feels like it could be legit.
That’s it for today folks, as always leaxe your thoughts on any of these rumors in the usual spot below.
