A major plot point of *Superman* was that Clark got a garbled answering machine message and didn't realize his parents were Space Nazis who wanted him to take over and eugenics-fuck his way to a new super-race (the plot of *Invincible* and also the plot of Elon Musk). But at the end Supergirl shows up, who left Krypton as a teenager. So couldn't the little blonde übermensch have just... *told* him about her time in the Krypton Youth and at Ku Klux Krypton rallies?
https://jwz.org/b/yk5i