En del bra mängd Google-Fu har tagit upp detta:
Flying Warriors ( Wikipediaartikel ) Ursprungligen släppt på 90-talet på NES.
The game features combat in a variety of formats, such as kicking and using fireballs to repel monsters in scrolling stages, a system during one-on-one duels against Tusk Soldiers or a pair of martial arts tournaments where the player must attack a mark that appears on their opponent's body, or defend the area when it appears on them (this system is similar to Culture Brain's original Flying Dragon for the NES), and RPG-style command battles against monster bosses. When confronted by a Tusk Soldier or other otherworldly villain, Rick can change into a costumed superhero form or switch with one of his teammates.
Dessa två punkter verkar matcha din beskrivning, men tomten verkar inte referera till några specifika strider mot en "svart boxare, som är nedtagen med relativ lättnad med ett benutdrag".
Det sägs i slutet av artikeln faktiskt att
Some major characters later appeared in the North American versions of Hiryū no Ken Gaiden and Hiryū no Ken S: Golden Fighter, known as Fighting Simulator: 2-in-1 Flying Warriors and Ultimate Fighter. Rick Stalker and his mentor Gen also appeared as cameos in several titles in the Super Chinese series, also by Culture Brain. A manga adaptation based on the game was translated and published in the early issues of GamePro magazine.
Jag hade turen att hitta några skärmdumpar av den komiska.
Enboxningmästerskap/turnering.Matchardinbeskrivning.
Härkandusenågonslåss.Dåverkarmotståndaren"få befogenhet av någon mörk kraft" , som matchar din beskrivning.
Också värt att notera är den sista sidan:
Det slutar med en annons för spelet.
Baserat på detta bevis tror jag att det här kan vara spelet / komiken du kommer ihåg.