Henry Cavill may have been excellently cast as Superman in Man of Steel, but the DCEU would have made more sense if the Kryptonian chosen for its movies had instead been Supergirl. Man of Steel emphasizes Superman’s non-human nature as an alien living on Earth, but this characterization is confusing for a man who grew up as a farm boy in rural America. In a story about a hero choosing humanity over their own people and learning to see the value of planet Earth, a better choice of character would be one who knows what planet Krypton and its people were truly like — and that character is Supergirl.
With a muddled comic book history, there have been a few different versions of Supergirl. She made her comic debut in Superman #123 back in 1958 as little more than a female counterpart to Superman, starting off as a supporting character before going on to get a leading role in a 1969 story arc in Adventure Comics. In most depictions, her name is Kara Zor-El, the cousin of Superman (Kal-El), and a fellow refugee from the doomed world of Krypton. Her characterization has varied wildly over the years, but the most interesting facet of her character is that, while Superman arrived on Earth as a baby and grew up as a human, Supergirl grew up Kryptonian and has to learn how to fit in on Earth.
Related: How Supergirl Revamped Superman IV's Story And Made It Work
It’s the Kryptonian side of her personality that would have made Supergirl a much better fit for the storylines which the DCEU tried to give to Superman. A scene at the beginning of Justice League exemplifies this, with children asking Superman what his favorite thing is about Earth. It’s a lighthearted moment but, for someone who’s never known anywhere other than Earth, this
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