Superman is back in the spotlight after fans questioned why he didn’t use his X-ray vision to uncover Ultraman’s identity. Many speculate the suit may have included materials that blocked his powers, while others point to creative choices that left the reveal hidden until later in the story. In DC lore, Superman’s abilities have often been limited in specific ways, a detail writers use to build tension against his enemies.

DC fans comment on Superman not knowing Ultraman’s identity

Fans speculate Superman couldn’t identify Ultraman with his X-ray vision because the suit contained lead lining.

Lead blocks his ability to see through objects. In DC lore, lead has always been Superman’s one visual weakness. It remains the most effective countermeasure against his powers. Lex Luthor engineered Ultraman with this in mind. He reinforced the armor with lead to stop Superman from discovering the truth too early.

Fans quickly noticed this issue. One user pointed out, “And Superman having X-ray vision didn’t notice the guy inside was his own clone,” highlighting the surprise of the reveal. Another added, “I still find it funny that the guy in the helmet was wearing another helmet underneath,” mocking the layered disguise.

Others questioned how Superman failed to notice background details, with one remarking, “How does Superman not hear the engineer approaching the fortress—or her radio chatter with Lex?”

Several users debated explanations. Some concluded simply, “The suit had lead lining.” Others added, “It’s made of lead,” pointing out the film never explained it directly.

One fan compared this to past inconsistencies. “Same way they forgot to write Superman could see the bomb the guy on the wheelchair was carrying.” They emphasized it as part of a recurring pattern of leaving such details unaddressed. Another suggested, “Suit was lined with lead! There done… let’s stop micro-analyzing everything to fit our narratives.”

The new Superman stars David Corenswet as Clark Kent, Rachel Brosnahan as Lois Lane, and Nicholas Hoult as Lex Luthor, with Ultraman introduced as a major twist.

The film, directed by James Gunn, is now available to stream on digital platforms.