Well, I didn't find a way to change it, but you can find the gamemode name with this:
$GameModeName = restWords(strReplace(restWords(strReplace(filePath($GameModeArg),"/"," ")),"_"," "));
echo($GameModeName);
And it's just a dumb avatar I've had forever. It's supposed to be like a quality assurance label. I've meant to change it for a while.