MAN OF TOMORROW: James Gunn Officially Announces Who Will Play Brainiac (And You Probably Don't Know Him)

MAN OF TOMORROW: James Gunn Officially Announces Who Will Play Brainiac (And You Probably Don't Know Him)

Man of Tomorrow director James Gunn has finally revealed who will play Brainiac in his upcoming Superman sequel: German actor Lars Eidinger.

By JoshWilding - Dec 20, 2025 11:12 AM EST
Filed Under: Man of Tomorrow

The hunt for Man of Tomorrow's Brainiac is finally over, as writer/director and DC Studios co-CEO James Gunn has just officially welcomed German actor Lars Eidinger to the DCU.

There's a very good chance that most of you won't be familiar with his work; Eidinger has primarily appeared in German and international film and television productions, including projects like My Little Sister and Babylon Berlin. Perhaps his most well-known role is in Shawn Levy and Netflix's All the Light We Cannot See, where he played the evil Reinhold von Rumpel. 

Eidinger also has a small role in George Clooney and Adam Sandler's new movie, Jay Kelly. He also counts Dumbo and White Noise among his U.S. credits. 

Taking to social media, Gunn wrote, "In our worldwide search for Brainiac in Man of Tomorrow, Lars Eidinger rose to the top. Welcome to the DCU, Lars."

Matt Smith, Claes Bang, Sam Rockwell, and, more recently, Dave Bautista, were rumoured to be in the running for Brainiac in Man of Tomorrow. However, Gunn recently took to social media to debunk those claims. Now we know why. 

Once again, it seems Gunn is prioriting casting the actors who he feels are a right fit for these DCU roles in favour of A-List names. The added bonus to that is it saves DC Studios money (even if it doesn't always help with ticket sales).

In many ways, it's hard to fault Gunn for relying on these characters being the selling point, though the pressure will be on David Corenswet and Nicholas Hoult to now prove their star power in the Superman sequel. Eidinger is a real talent, though, and should make for a suitably scary Brainiac.

Written and directed by James Gunn, Man of Tomorrow stars David Corenswet as Clark Kent/Superman, Nicholas Hoult as Lex Luthor, Rachel Brosnahan as Lois Lane, Isabela Merced as Kendra Saunders/Hawkgirl, and Frank Grillo as Rick Flag, Sr.

Several actors and characters are rumoured to appear, including Aaron Pierre's John Stewart/Green Lantern and John Cena's Peacemaker.

Recent reports have suggested Gunn is looking to cast the DCU's Wonder Woman, and while the filmmaker has remained silent on that, he did recently confirm that Steve Trevor won't appear in the Superman sequel.

Man of Tomorrow arrives in theaters on July 9, 2027.

About The Author:
JoshWilding
Member Since 3/13/2009
Comic Book Reader. Film Lover. WWE and F1 Fan. Rotten Tomatoes-approved critic and ComicBookMovie.com's #1 contributor.
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Wahhvacado
Wahhvacado - 12/20/2025, 11:47 AM
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NOID
NOID - 12/20/2025, 11:47 AM
Money saving hire? Hope he can pull it off
GuardianAngel
GuardianAngel - 12/20/2025, 12:33 PM
@NOID - OR he had a great audition.
jst5
jst5 - 12/20/2025, 1:54 PM
@NOID - Naziniac....
ImNotaBot
ImNotaBot - 12/20/2025, 3:39 PM
@NOID - i mean isn’t that a good thing? Saving money so he can use his budget on other things like VFX, makeup, building practical sets… also giving opportunity to unknown talent. A lot of movies right now are casting the same actors over and over, Pedro Pascal, Timothée Chalamet, Zendaya, Austin Butler, Jacob Elordi… I’m glad the DCU is giving opportunities to newcomers like this dude and the dude who’s playing Clayface.

Also Pascal casting for Reed in F4 cost 10 million! Twice more money than the budget of the main cast of Superman combined. Casting is the main reason why Marvel movies go over the budget making that every movie has to make over 1 billion at the BO.
DCRISEN0609
DCRISEN0609 - 12/20/2025, 4:41 PM
@ImNotaBot - totally agree
vectorsigma
vectorsigma - 12/20/2025, 10:28 PM
@NOID - it's either nepotism or money saving. Funny criticisms 😂
RockReigns
RockReigns - 12/20/2025, 11:48 AM
He’s a fantastic actor. Loved him in… let me look at his Wikipedia real quick.

The miniseries… All the Light We Cannot See.
Bucky74
Bucky74 - 12/20/2025, 3:54 PM
@RockReigns - He had better shave that hair and go green!
WalletsClosed
WalletsClosed - 12/20/2025, 11:51 AM
Proof that no one wants to work with Gunn or be in this dogshit universe. He can only hire unknowns or his friends!

Reboot the MCU and DCU
RockReigns
RockReigns - 12/20/2025, 11:54 AM
@WalletsClosed - because Jesse Eisenberg and Ciarán Hinds was such a household names.
bobevanz
bobevanz - 12/20/2025, 11:56 AM
@WalletsClosed - move those goalposts from "only his friends and his wife" to unknowns. Clowns like you will always complain. Luckily none of it matters lol
bobevanz
bobevanz - 12/20/2025, 12:03 PM
@RockReigns - or Gal Gadot, Ezra Miller, or that Cyborg schmuck riiight lol
Nolanite
Nolanite - 12/20/2025, 12:34 PM
@bobevanz -

Just don't pay any attention to this crotch sniffer, he's an unpleasant individual who loves penis and salutes a hard on.

Nolanite out
newhire13
newhire13 - 12/20/2025, 12:56 PM
@WalletsClosed - You really just log in every day and say the dumbest shit.
WalletsClosed
WalletsClosed - 12/21/2025, 8:14 AM
@newhire13 - And you cry about it like you always do
WalletsClosed
WalletsClosed - 12/21/2025, 8:15 AM
@bobevanz - It matters to the vast majority of people
harryba11zack
harryba11zack - 12/20/2025, 11:53 AM
a man
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bobevanz
bobevanz - 12/20/2025, 12:01 PM
@harryba11zack - stop liking your own comments lmao
harryba11zack
harryba11zack - 12/20/2025, 12:10 PM
@bobevanz - User Comment Image
harryba11zack
harryba11zack - 12/20/2025, 2:16 PM
@bobevanz - User Comment Image
MatteMan
MatteMan - 12/20/2025, 11:55 AM
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bobevanz
bobevanz - 12/20/2025, 11:55 AM
You're telling me Bautista was a lie?! All of those generic casting RUMORS were lies?! WOW WHO WOULD'VE THOUGHT! And the trolls still sling shit. Get a [frick]ing life
JackDeth
JackDeth - 12/20/2025, 1:08 PM
@bobevanz - To be fair, we don't know how many people were considered and who. We may not ever truly know if any of these rumored people actually had auditions or not. But also, yeah.. [frick] these 'scoopers' that don't know shit.
FinnFangFoom
FinnFangFoom - 12/20/2025, 11:55 AM
I know who he is, brilliant actor. Wasn't expecting this at all. Surprise, but a welcome one.
Nightwing1015
Nightwing1015 - 12/20/2025, 12:01 PM
Wouldn't have been mad with Jason Issacs, he did a good job before
RaddRider
RaddRider - 12/20/2025, 12:04 PM
Scoopers win again……..Oh wait!!!
TheVisionary25
TheVisionary25 - 12/20/2025, 12:05 PM
I’m not familiar with this actor at all but he certainly has the look imo…

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?si=ul4IVcGBnZ3HoSgU

I’m just glad Brainiac has finally been confirmed!!.
Steel86
Steel86 - 12/20/2025, 3:16 PM
@TheVisionary25 - I was thinking the exact same thing. Gunn has really shown he is looking for the right fit for these roles and so far he has really hit.
Thebronxknight
Thebronxknight - 12/20/2025, 12:07 PM
I trust Gunns casting. He rarely misses when it comes to casting. He gave marvel one of its best villains in Guardians 3.
KurtCrawler
KurtCrawler - 12/20/2025, 12:08 PM
Gunns castings are generally great so I trust him with this pick. Hope he's great, Brainiac is my favorite DC villain.
HelloBoysImBack
HelloBoysImBack - 12/20/2025, 12:09 PM
Didn't think Gunn did auditions. He's not needed them up until now
regmovieguy
regmovieguy - 12/20/2025, 12:20 PM
@HelloBoysImBack

That’s just not true, lol. The press was all over the actors and actresses screen testing for Superman.
RolandD
RolandD - 12/20/2025, 1:19 PM
@HelloBoysImBack - Corenswet and Hoult both auditioned for Superman which is how Hoult wound up as Luthor I’m not sure who else auditioned but Brosnahan Was among other actors actresses who auditioned for Lois. She and Corenswet did an audition together to see if they had chemistry as did other actors and actresses in various pairings. I’m sure there were more, but since these were three of the main actors, there were more stories about them.
Oberlin4Prez
Oberlin4Prez - 12/20/2025, 12:10 PM
I'm just glad it wasn't Bautista or Matt Smith.
Oberlin4Prez
Oberlin4Prez - 12/20/2025, 12:10 PM
@Oberlin4Prez - or Madds
lazlodaytona
lazlodaytona - 12/20/2025, 12:13 PM
I can't imagine it mattering too much who it is considering the prosthetics, green skin, and cgi that will be used. Heck, they may be digitally altering the voice too.
RolandD
RolandD - 12/20/2025, 1:03 PM
@lazlodaytona - A bit different but you could say a lot of this about Colin Ferrell as Penguin but his performance still shines through despite the prosthetics and changing his voice so drastically.
lazlodaytona
lazlodaytona - 12/20/2025, 1:38 PM
@RolandD - you are absolutely correct sir
99OPTIMISTPRIME
99OPTIMISTPRIME - 12/20/2025, 12:16 PM
Was Benedict Cumberbatch not available?🤣 I'm just glad that we're finally getting Brainiac in a live-action movie, and it's not a painfully dragged out secret.
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