[Undertale] ... something I've been thinking about.

When, in the switch version, you fight Mad Mew Mew she's openly says "Oh you don't recognize me" which makes me wonder if like... A Ghost's voice changes to fit their corporeal form?

since Napstablook does call in Mettaton, but doesn't seem to know that hey that's his one cousin?

(IF THIS HAS BEEN DISCUSSED, or like proven to be true or something like that? I would not know, I avoid the majority of fandom discussion.)