How to Make your own Cheat Codes

[Vega]

Well, if I did what you asked me to do (the Mario Sports Mix character selection thing), although I could only reduce the results between 285 and 305 (there are too many, isn't there a way to reduce even more?), the good thing It is that if it showed me the results in real time, but I still think that there are too many, does it matter anyway?

That is indeed too many results. Now that you have all the character values, this should help narrowing down to a manageable list. Retry the method but do something like this..

Select Luigi search for 0x01, go back
Select Toad, continue search but with value 0x09, go back
Select Moogle, continue search but with value 0x0C, go back
etc etc til you get a small enough list

If that doesn't work, you can slightly change the method...
On the character selection screen...
pre-select Luigi (don't actually select/click on him), search for 0x01
now pre-select Toad, change value to 0x09, continue search
now pre-select Moogle, change value to 0x0C, continue search
etc etc