>>106605252That's because it's the Fawcett Comics version of the character. That guy's been dead for 66 years. National Comics, later called DC Comics, sued Fawcett until they decided to settle and just go out of the comics business.
When Fawcett stopped printing comic books, they also stopped earning money to justify the necessary legal maintenance of their IP. That meant that the name "Captain Marvel" lapsed as a trademark (trademarks, unlike copyrights, have always needed to be renewed - you can trademark a name, but it can't be copyrighted and never could be).
This meant that 10 years later, in 1963, Atlas Comics were free to change their name to Marvel Comics without any complaint from Fawcett (which still existed as a publishing company, but not as a comic book publisher). 5 years after that, in 1968, Marvel Comics debuted a character called "Captain Marvel", trademarking the name for themselves. Their character was certainly a homage to the Fawcett character, who nobody ever expected to see republished, but not a direct copy.
It took DC Comics 5 more years to realize that they could rent the old Fawcett characters and republish them. They did this and immediately launched legal action over the trademark against Marvel Comics. Marvel counter-sued as is usual. At discovery it was shown that DC didn't hold the trademark they were suing over because Fawcett had let it lapse, so DC were forced to settle. Their planned Captain Marvel tv show became the Shazam! show instead, as DC agreed never to try to market their character, which they finally bought outright in 1978 from Fawcett, under the name "Captain Marvel". In 2009 DC Comics finally settled on officially calling the character "Shazam", including retroactively.
Of particular note is that Marvel Comics is actually named after the superhero comic book "Marvel Mystery Comics" published in October 1939 - 2 months before Whiz Comics #1 hit stands, and 3 months before Captain Marvel debuted in Whiz Comics #2.
