Sorry if I missed some! Inferno, Geralt, Yoshimitsu, Voldo, and Nightmare do not seem to have dialogue about Maxi's hairstyle. Astaroth too.
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EDIT: I actually missed Nightmare and to an extent Astaroth! OTL
Nightmare says "Is that horn just for show?" and Astaroth says Maxi's eyebrows are lame lol.