ArtoriaPendragon_
Thanks for the great chapter. You said you wanted some characters to put in your roulette, one you could put would be the manga Baki, basically the characters are very strong, but that mainly comes from martial arts techniques, another would be Kengan Ashura, which is basically the same thing than baki, but with more different techniques and martial arts, another would be the street fighter. I recommend watching videos on YouTube talking about each of these universes to get an overview of the strength of the characters.