James Gunn On Whether Lex Luthor Knows Superman's Secret Identity & "Plot Hole" Relating To Ultraman

James Gunn On Whether Lex Luthor Knows Superman's Secret Identity & "Plot Hole" Relating To Ultraman

James Gunn has weighed in on the perception that Lex Luthor should have been able to figure out Superman's secret identity after using his DNA to create Ultraman...

By MarkCassidy - Apr 29, 2026 09:04 AM EST
Filed Under: Man of Tomorrow

A meme roasting (or attempting to roast) Lex Luthor for failing to discover the Man of Steel's secret identity in James Gunn's Superman has been circulating online, and the director has now responded.

Though it doesn't really make a lot of sense, there's a perception that, since Lex was able to create a clone of Superman from his DNA, he should really be able to figure out that his human disguise is Clark Kent.

When someone brought this up on Threads, while also mentioning the theory that Luthor actually does know his nemesis's secret identity but is simply choosing to keep it to himself for the time being, Gunn replied:

"Lex doesn't know who he is but I don't know how he would. A) Lex thinks Superman is a disconnected alien who wants to take over the world, so I'm not sure why he'd assume he has a "secret identity." B) Hypno Glasses are real. Clark looks like another person. C) Being a genius in some ways (in Lex's case, genetics, electrochemistry, nanotechnology, nuclear & quantum physics, to name a few) doesn't mean you are a genius in all fields. Like many scientists (& artists!) he can miss basic things."

There is an argument that Lex seemed to be trying to uncover Superman's earthly origins in the infamous Russien Roulette scene, but the villain only ever asks his prisoner who raised him.

What do you make of this debate? Drop us a comment down below.

The plot of Gunn's Superman follow-up will focus on the Man of Steel (Corenswet) and Lex Luthor (Hoult) putting their differences aside and joining forces to defend the planet against Brainiac (Lars Eidinger).

Rachel Brosnahan (Lois Lane), Skyler Gisondo (Jimmy Olsen), Sara Sampaio (Eve Teschmacher), Isabela Merced (Hawkgirl), and Maria Gabriella de Faria (The Engineer) have all been confirmed to return, and we recently learned that Aaron Pierre will reprise his Lanterns role as John Stewart.

Adria Arjona is also set to appear as Maxima (though there's a lot of speculation that she's actually been cast as Wonder Woman).

"At its core, it’s about Clark and Lex," Gunn said in a recent interview. "I relate to both of them. I relate to Lex’s ambition and obsession — minus the murder. And I relate to Superman’s belief in people, his Midwestern values. They’re two sides of me."

Man of Tomorrow will hit theaters on July 9, 2027.

About The Author:
MarkCassidy
Member Since 11/9/2008
Mark Cassidy is a writer, photographer, amateur filmmaker, and Rotten Tomatoes-approved critic from Dublin, Ireland.
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TheDarkLastSonKnight
TheDarkLastSonKnight - 4/29/2026, 9:43 AM
This goes against Gunn's own themes that your genes or lineage informs who you are less than your upbringing/environment.

If Lex is able to clone Superman, from what I assume is cellular material, than Clark likely had some traces of his thought patterns or memories in there.

This whole thing is stupid.
Rpendo
Rpendo - 4/29/2026, 9:49 AM
@TheDarkLastSonKnight - It’s a movie about a guy in tights and red underwear outside of his pants who flies and beats up monsters.

It may be possible that some of you people are taking this stuff a tad too seriously.
HashTagSwagg
HashTagSwagg - 4/29/2026, 9:53 AM
@Rpendo - So these movies have regressed back to having to turn our brains off in order to force ourselves to try and enjoy it.
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TheDarkLastSonKnight
TheDarkLastSonKnight - 4/29/2026, 9:58 AM
@Rpendo - It's ok to still want a semblance of verisimilitude in my science fiction media. You could make your argument for any media:

T2 is about synthetic and liquid metal cyborgs battling each other for the fate of mankind.

The Dark Knight is about a billionaire who dresses up like a bat and uses gadgets to defeat eccentric criminals in his city.

Wanting it to be taken somewhat seriously isn't too much to ask.

UltimaRex
UltimaRex - 4/29/2026, 10:09 AM
@TheDarkLastSonKnight - DNA doesn't work like that.
dragon316
dragon316 - 4/29/2026, 10:13 AM
@TheDarkLastSonKnight - wasn’t like when lex made buzzarooo in cartoon and comics some memories not all
TheDarkLastSonKnight
TheDarkLastSonKnight - 4/29/2026, 10:23 AM
@UltimaRex - Since it's scifi/comic fiction, I'll allow that element.
But If Ultraman is a clone, He's likely to have some of Clark's memories.
You could make the argument that he's an imperfect or dumbed down copy of Clark, But it's a harder sell for me personally, especially when we just leave it up to "Magic Glasses".

To each their own.
mastakilla39
mastakilla39 - 4/29/2026, 10:25 AM
@TheDarkLastSonKnight @HashTagSwagg - I only saw the movie once in theaters, but was Ultraman mentioned to be a perfect or identical clone to Superman? Ultraman likely doesn't have the same medical, dental, or DNA records as Clark for Lexcorp to trace or match with Superman. There's likely no database that has Clark's DNA because he never had to go to any medical, criminal, or dental facility.

Lex seems to have made a clone that was identical to Superman in physicality only not knowledge. Ultraman had to be controlled with a billion dollar computer or video game console to fight Superman so he has no knowledge or conscience besides what he was programmed to do.

Cloning is a vague concept in general used to keep plot points open ended. So unless certain facts are stated we don't know what is or isn't. Like should a clone have the same memories or knowledge of a person? Can you clone someone's knowledge or memories?
vectorsigma
vectorsigma - 4/29/2026, 10:27 AM
@TheDarkLastSonKnight - lolz, cloning doesnt work like that
NotMyDiagnosis
NotMyDiagnosis - 4/29/2026, 10:44 AM
@TheDarkLastSonKnight - its best not to think about the movie. The more you think about it, the worse it becomes.

TheDarkLastSonKnight
TheDarkLastSonKnight - 4/29/2026, 10:45 AM
@mastakilla39 - I agree about the vague cloning concept as a plot convenience as it is applied. In Superman 2025, Lex Luthor entered the Fortress of Solitude by using Ultraman, a clone of Superman created from his hair. The clone’s exact genetic makeup allowed the Kryptonian systems within the fortress to recognize Ultraman as Superman, granting access without resistance. Luthor exploited this security loophole to breach the stronghold and execute his plan.
UltimaRex
UltimaRex - 4/29/2026, 10:46 AM
@TheDarkLastSonKnight - you're thinking of Connor. Implanted memories is a separate technique and wasn't Clark's memories to begin with. To even do something like that would require a brain scan from Clark which Lex didn't have...
TheDarkLastSonKnight
TheDarkLastSonKnight - 4/29/2026, 10:46 AM
@vectorsigma - Tell that to Nolan, in the Prestige and Robert Angier's clones.
UltimaRex
UltimaRex - 4/29/2026, 10:50 AM
@TheDarkLastSonKnight - the Prestige was a scanning and copying device that doesn't work like cloning. If Lex had that, it'd be a different movie...
UltimaRex
UltimaRex - 4/29/2026, 10:51 AM
@NotMyDiagnosis - especially if you're wrong and won't admit it, eh?

See you in 2034.
TheDarkLastSonKnight
TheDarkLastSonKnight - 4/29/2026, 10:56 AM
@UltimaRex - A "scanning and copying device" in late century Colorado can copy memories, but a clone made of Clark's hair with ultra modern technology and ingenuity would do nothing but create a mindless, grunting creature.

Consider my disbelief suspended.
Rpendo
Rpendo - 4/29/2026, 11:05 AM
@HashTagSwagg - nah, man. I take a movie that is trying to be a Saturday morning cartoon come to life as pretty much that. If I’m watching like, ‘Silence’ or ‘Marty Supreme,’ I have different standards for plot holes and errors or stupid decisions and whatnot than I would have for a movie like Superman or X-Men or whatever. If you’re walking into a movie about Superman expecting a literally perfect script, with no holes or absurdities or silliness or whatever, you may be doing this whole thing wrong.

That gif you used, by the way, came from Dark Knight, a phenomenal movie with a million plot holes in it.

Keep whining over minutiae in comic movies every day, though. Reboot the MCU and DCU, or something.
supermanrex
supermanrex - 4/29/2026, 12:09 PM
@UltimaRex - dont bring logic to CBM.com comment section bitching and moaning sessions. it doesnt ever work. its all about the almighty edgy jaded discussions here.
NotMyDiagnosis
NotMyDiagnosis - 4/29/2026, 12:11 PM
@UltimaRex - wrong about what? There are glaring contradictions in this movie.

Its best not to think about it and roll with the tiktok generation to enjoy it.

See you in 2045.
vectorsigma
vectorsigma - 4/29/2026, 12:15 PM
@UltimaRex - on the prestige, my thoughts exactly
UltimaRex
UltimaRex - 4/29/2026, 12:27 PM
@TheDarkLastSonKnight - take it up with Nolan and the belief that Tesla was far ahead of his time.
TheDarkLastSonKnight
TheDarkLastSonKnight - 4/29/2026, 12:31 PM
@UltimaRex - Also, Wouldn't Lex acquire the info about Clark's upbringing in the fortress? I mean the home movies are right thereeeeeee.
UltimaRex
UltimaRex - 4/29/2026, 12:31 PM
@supermanrex - thing is, they fail in even that.
UltimaRex
UltimaRex - 4/29/2026, 12:35 PM
@NotMyDiagnosis - the only contradiction around here is you throwing another decade on while also claiming that the DCU requires you to not think.

You're not nearly as smart as you think you are.
UltimaRex
UltimaRex - 4/29/2026, 12:37 PM
@TheDarkLastSonKnight - no. Do you want me to tell you why?
Goldboink
Goldboink - 4/29/2026, 1:03 PM
@TheDarkLastSonKnight -
It's called willing suspension of disbelief.

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Goldboink
Goldboink - 4/29/2026, 1:04 PM
@HashTagSwagg -
Dude.
He's an alien with superpowers.
JayBird
JayBird - 4/29/2026, 1:08 PM
@TheDarkLastSonKnight - Since when does a cloning process also clones your memories?
ModernAudience
ModernAudience - 4/29/2026, 1:20 PM
@TheDarkLastSonKnight - your comment proves Gunn's intention. Even if the clone had Kents memories, his upbringing under Lex made him what he was.
JayBird
JayBird - 4/29/2026, 1:21 PM
@TheDarkLastSonKnight - The whole thing about cloning a kryptonian is that it doesn't work that well, Ultraman and Bizarro are great examples, Lex himself said that kryptonian DNA is too hard to read and clone it, so for Connor Kent (Superboy) he had to mix his DNA with Clark's DNA for the cloning to work in a sucessful way
JayBird
JayBird - 4/29/2026, 1:26 PM
@ModernAudience - And there is the point that Ultraman doesn't talk so we don't know for sure if he has Clarks memory
supermanrex
supermanrex - 4/29/2026, 1:37 PM
@UltimaRex - User Comment Image
LibraMattered
LibraMattered - 4/29/2026, 1:39 PM
@TheDarkLastSonKnight - Maybe this might help. Personally I see every movie ever made as being in its own universe. The rules we know and have don’t fully exist in those movies. They might be close but not quite the same. It’s not our reality. So movies like Superman… maybe DNA works differently in that universe. I mean Superman flying and shooting lasers out of his eyes is a clue that he isn’t in our reality. I know that’s a given but for some reason people carry the constraints of our reality to fictitious movies.
NotMyDiagnosis
NotMyDiagnosis - 4/29/2026, 1:49 PM
@UltimaRex - you being emotional and trying to fight everyone in the comments doesn't fix the issues in this movie.

Switch your brain off and be happy.
UltimaRex
UltimaRex - 4/29/2026, 3:44 PM
@NotMyDiagnosis - I'm not nearly "emotional" enough.

I like fighting everyone. It's how I how I'm right.

Jor-El aside, there are no issues with S25.

No.

See you in 2034.
TheDarkLastSonKnight
TheDarkLastSonKnight - 4/29/2026, 4:37 PM
@LibraMattered - I absolutely accept all absurdities in films, especially those of Sci Fi/Fantasy films.

With that said, The execution in this case, just did not fit my pallet.

To each their own. I don't knock anyone with a differing opinion/taste in Superman incarnations than myself.
LibraMattered
LibraMattered - 4/29/2026, 7:49 PM
@TheDarkLastSonKnight - Fair enough and I just gave my way of taking in films because once I started viewing all films that way, I was able to enjoy them much more.
theFUZZ008
theFUZZ008 - 4/30/2026, 9:32 AM
@HashTagSwagg - Pretty sure The Joker says "Six" in this gif.
Bucky74
Bucky74 - 4/29/2026, 9:48 AM
I was very disappointed by Gunn’s Superman but he makes a case here with his reasoning. Although hypno glasses are still dumb even if they were in a few of the comics.

It’s a little like that JLU Ep where the Flash and Lex switched bodies and Lex says “it’s time to have a look under the mask” and then “I have no idea who this person is.”
FinnFangFoom
FinnFangFoom - 4/29/2026, 9:52 AM
@Bucky74 - I wasn't, but still wanted better. Not a good start, not a bad start
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