Somewhere in the 1990s, I think, I read a short comic in a gaming magazine involving a man entering a fighting tournament. I want to say that he was Caucasian and blond, but I won't swear to it. One of his early opponents was a black boxer, who's taken down with relative ease with a leg sweep with the protagonist explaining that one of the weaknesses of traditional boxing is that they never learn to defend the legs. Shortly thereafter, the protagonist winds up in a situation where they're attacked by something supernatural. I want to say that one of the fighters, maybe the boxer, got empowered by some dark force. The protagonist is on the ropes in the fight until he does something and transforms, suddenly encased in colorful armor. That ended the comic, but the final page had a picture of an NES game with 3-4 people in superhero costumes (which didn't exactly match the armor the main character was wearing in the comic) on the cover. The title might have had something to do with dragons, or maybe I just saw a dragon theme in the portrayal.
I have a vague memory that I might have run into the game and played it, although I recall thinking it didn't seem quite right, with a different cover and more of a mystical story. In the game I played, it was a martial-arts sort of game with levels splitting between side-scrolling with various mook enemies and tournament battles with tougher opponents. One of the things that stuck out to me was that you could attack on multiple levels, I think low, middle, and high, and block on those same levels, with the opponent's strikes and weaknesses showing up as circles and stars respectively. I also remember encountering an opponent who only attacked high with punches with a weakness around the legs, and thinking that this must be the scene from the comic with the boxer. I actually don't recall if there was any transformation in the game.
I know... it's a vague memory, but I'm hoping someone might recognize it.