If you've never played Rival Turf!, it's kind of like Final Fight, you run around various cities across the country beating up wave after wave of identical twins.
And just like lots of other games, if you end up running out of lives and continues, you have to start over. But if your score is high enough, you get to enter your name in the High Score Table. If you pretend for a moment that your name is 'CHRCONF'
And then hit 'EX', you'll be taken to a secret screen
Where you get to change the names of all the characters in the game. There aren't any restrictions that I could find, so go nuts
And that should make having to repeat the first few stages a little less tedious