PC Superman had somewhat of a similar thing. Like when Savage Hulk was wailing on him, Superman didn't budge.
Superman faced threats with similar powerset as in a kryptonian brothers. Superman stated he could have kept on punching them for hours and they wouldn't have felt a thing.
Cap. Marvel and Adam were completely invulnerable. Not even magic could harm them at one point.
Originally posted by cloud102Back when Captain Marvel/Black Adam were published by Fawcett Comics, they were considered by most to be Superman's overall superior (having almost identical abilities, yet no weaknesses to speak of.) *Flash Fact*
Cap. Marvel and Adam were completely invulnerable. Not even magic could harm them at one point.