"Wonder Man was a new superhero who appears and joins the Avengers... but he's really a super-villain who's been created to join them pretending to be a hero, to join them under false premises, and then destroy them when their guard is down, from within."
He explains however that at the crucial moment, he has a crisis of conscience and sacrifices himself instead.
"I love this comic, it was terrific. I wrote this incredible letter saying how great it was," he recalled. "And I look at it and say: there's like my whole career there."
"It's a great character. He seems to be a hero, but he's really a villain, but at the end he's redeemed because he can't do the villainous thing, he gives up his own life and dies heroically — all the things I love to do in my own thing."
If the arc sounds familiar, it might be because one of Game Of Thrones' greatest characters is currently riding a very similar one.
Jaime starts the show as a pure villain, stabbing Ned Stark, trying to kill his son Bran, and secretly impregnating the King's wife — three times — who happens to be his own sister Cersei.
Over the course of the show fans have watched him slowly become a more honorable character, right until the end of Season 7 where he appears to defect from his sister and join the Stark and Targaryen armies in the North to fight the Night King, as he promised.
In their final scene together, Cersei threatens to order The Mountain to kill him, but ultimately lets him walk away. A subsequent scene in Season 8 shows her Hand Qyburn hiring Bronn to assassinate both Jaimie and Tyrion; however there is no way for fans to know if Cersei was really behind this order.
Should Martin's GOT plot mirror that of his favorite Avenger's storyline, Jaime may yet betray the Northern alliance as part of a secret unseen pact with his sister, before having one final heroic change of heart.
Of course, the hero-to-villain-back-to-hero arc could also be applied to Theon Greyjoy, whose storyline concluded on Sunday night with an ill-advised-but-crucial-seconds-buying final charge at the Night King, which left him the White Walker's final fatality.
Either way, in the same interview, Martin admits he ultimately does not have control over the HBO smash hit series, and even voiced some thinly-veiled frustrations at how it has deviated from his source novels.
"I don't mind being part of a team... but there's something in me that wants to be the captain of the team," he admitted.
"When you're writing short stories and novels, yes you may have editors and all that, but essentially the writer is king. The writer decides how everything is going to be; people can give suggestions, and you can say yes or no to them."
"Now, when you get involved in television and film, um... you're working with a large team."
He said that while this is "great" — costume and set designers creating tangible things you've only dreamed of, actors bringing their own interpretations of characters, special effects people being "magicians" — "All of this can be very exhilarating."
"But it can also be... traumatic. Because sometimes their creative vision and your creative vision don't match, and you get the famous creative differences thing — that leads to a lot of conflict."
He said that while sometimes you get lucky and everyone is on the same page, other times there is "butting heads and clashing egos".
"And then you get totally extraneous things like the studio or the network weighing in, and they have some particular thing that has nothing to do with story, but relates to "Well this character has a very high Q Rating so let's give him a lot more stuff to do (the video cuts to a montage of Jermome Flynn's Bronn here) even though he's a rather unimportant character'."
He concludes: "Eventually if you want that creative control, you have to put in your dues, work your way up through the system, and get to the position where at least you are the captain of the team... where you are the showrunner or producer."
Meanwhile "Game Of Thrones" fans have less than three weeks to wait to find out how the TV show wraps up.
Fans of the source novels however have a lot longer to wait to see just how different the two stories are, as the 70-year-old Martin is still working on the penultimate book — "The Winds Of Winter" — before he even gets started on the final book, "A Dream Of Spring" (which may not even be the final book; he previously hinted he could continue beyond that).
His most recent novel in the series — "A Dance With Dragons" — was published all the way back in 2011.