I don't know if I can share this... But I already have discovered the IDs of a code to change the franchise icon of the characters that appear on the Character Selection Screen and on the Results screen. The code is made by ds22 and I don't proclaim any of his work as mine.
So, let's get started. The only thing that we're going to need is this code:
XX has YY franchise icon [ds22]
04455XXC YY000000
The XX is the id for the character you would like to have other Franchise icon, I don't know how to explain this but the IDs are these:
And the YY is the ID of the franchise you would like to have over the XX character. The franchise IDs are listed above:
And here are some examples of codes that I have been using and I'm sure that they work: