- Primary Subject: The DC Universe (DCU) Superman and Supergirl Age Gap
- Key Update: James Gunn confirmed that the DCU's Superman is 31 years old, while Supergirl is depicted as younger at 23, flipping the traditional comic timeline where she is chronologically older.
- Status: Confirmed
- Last Verified: June 29, 2026
- Quick Answer: David Corenswet's Superman is 31 years old in the DCU, while Milly Alcock's Supergirl is 21, establishing an 8-year age gap between them.
As James Gunn's new DC Universe begins to unfold on the big screen, fans are poring through every detail of its freshly minted lore. One of the most fascinating shifts away from the traditional comic book mythos lies in the mysterious age gap between the world's most famous Kryptonian cousins.
WARNING: This article contains MINOR SPOILERS for DC's Supergirl, so proceed with caution.
How Old is the DCU's Man of Steel? The Superman vs Supergirl Age Gap
Kara was confirmed to be celebrating her 23rd birthday while partying on "other planets" orbiting a red sun. As Clark Kent explained in Superman (2025), this is because the red solar radiation removes a Kryptonian's powers and slows down their metabolism as if they were back on Krypton, which allows his cousin, Kara Zor-El, to get drunk.
Kara later mentions to her young companion, Ruthye, that her cousin is around 8 years older than she is.
This confirms two things: firstly, that Kara was born after Kal-El (back to her Silver Age origins). It was also shown that Kara was born in Argo City years after it separated from Krypton before its end, thanks to the force field her father created to protect their planet for as long as it could.
In previous canon universes, Kara is usually depicted as Clark's older cousin sent to care for him as an infant while she was in a prolonged stasis that made her physically younger on Earth. Now, if Kara is 23 years old in her movie and Clark is around 8 years older, that makes Superman around 31-32 years old. At least on the Supergirl timeline.
What the Kryptonians' Age Gap Means for the DCU Canon
Considering that the Kryptonian cousins are the first heroes to be introduced with their own debut films in the DCU already tells a lot of what fans can expect once future films like Man of Tomorrow drop.
Instead of Superman guiding a teenage cousin who technically remembers their home planet as a peer, Clark is now an established and emotionally grounded hero in his early 30s who can act as a true mentor.
Being at a younger age of 23 highlights why Milly Alcock's Kara is a "messier" version that DCU hardened more as a survivor. Having lived on a drifting chunk of Krypton for the first 14 years of her life, watching those around her perish, she contrasts with Clark, who was raised with warmth and love on the Kent farm.
The 8-year gap also allows Clark to offer the stable family anchor that Kara desperately needs as she navigates her role on Earth.
In the meantime, fans can enjoy watching Supergirl (2026) on the big screens. Stay tuned!
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