I did change how long Chupon's name would be (for my hack) yes. The main reason I thought it was also an issue if Shadow's name was shorter is from when looking at the patch info section of the FF6 Improvement Project thread here the other day when looking into this, where it was noted: "Novalia Spirit's Shadow/Chupon Colosseum fix will only work so long as Chupon's name remains shorter than Shadow's name. If you change either so that Chupon's name is longer than Shadow's, however much longer Chupon's name is will appear at the end of Shadow's name.".
Either I'm misunderstanding this sentence or Darkmage was incorrect when saying the 'if you change either so that his name is longer than Shadow's etc.'.
I did see that in the readme and thought to myself that it sounds like he indeed took care of the character name issue, and I should of tested that to see first before thinking Novalia must have made a mistake.

Well anyway, I really appreciate a fix for the longer monster name issue, even though I know doing patches intended for hacks is not exactly your thing, 1337. Sorry about that.
So testing out the patch here, while fixing the issue of Chupon's name being there, it seems to also not be showing Shadow's name on the screen, so no name monster or character at all. Looking at the asm file it looks like you intended Shadow's name to be there, so this might just be an issue.