I have read he has credited two episodes of the Outer Limits as inspiration, but I doubt he didn't know of that story as at least proof it could work in a visual format. 

The third CHAMELEON movie was subtitled "Dark Angel."

Not really sure if this is a coincidence or if DARK ANGEL was a rip-off.  (Enough time had passed, especially to steal the subtitle of the third movie.)

But I am reminded of how much CHARLIE'S ANGELS: FULL THROTTLE (June, 2003)--especially the beginning--totally felt like J. Scott Campbell's DANGER GIRL (premiered March, 1998).

You could say that Campbell "stole" (borrowed?) the three-woman adventure team idea from the original TV show, but its distinct style was totally different.  (Note that the comic pre-dated both the 2000 CHARLIE'S ANGELS movie and also the 2001 TOMB RAIDER movie, but came way after the Sean Connery and Roger Moore JAMES BOND movies.)

The opening scenes of FULL THROTTLE felt so much like DANGER GIRL, any faithfully done DANGER GIRL movie would be perceived as ripping off FULL THROTTLE!  (For the next 20 years at least!  Maybe they can do one now.)

But from what I've read elsewhere, Wonder Man's publisher, Victor Fox, who was publishing astrology magazines, saw reports on the sales for Action Comics and decided to publish comic books. He hired Eisner who created Wonder Man for Wonder Comics, which was published in 1939.

Eisner's fictional account based on the copyright lawsuit as depicted in his graphic novel, The Dreamer, apparently conflicts with his testimony at the trial.

And there's this quote from Eisner I found on a blog:

So, for me, Eisner claiming he wasn't aware of Superman's existence is like Yoko Ono claiming she didn't know who the Beatles were in 1966 when she met John Lennon. But, according to Paul McCartney, he referred her to John after she tried hitting him up first for some manuscripts to donate to a charity cause. 

To work in comics in 1939 for a publisher who specifically started in the business precisely because of the success of Superman is ludicrous. I believe that's why, despite what Eisner on trial, he altered his story later in public interviews. It was a hard story to swallow, and the court didn't buy it, either.

No coincidence, that.

Hank Ketcham's single panel cartoon first appeared in US newspapers on the 12th March 1951. The UK Dennis, not yet in his classic red and black jumper, debuted in a half-page strip, drawn by David Law, in the Beano cover dated 17th March 1951. Some sources say that that edition of the Beano would have been on sale on the 12th March, while I've seen some claim it would have been even earlier. Artist and historian Lew Stringer wrote in 2016 that, at the time, the comic would have been dated for the weekend ahead and was published on Wednesdays, giving us an on sale date of 14th March. Lew knows his stuff so I would go with his date and say the US Dennis "wins" by two days.