well i think face imgs help to give more personality to a charackter..
because you had no battler ect..
i used schlangans generator to make these 2 examples for free.
(for the 2 main chars ,i had no other refferences)
-> for the male i made different colored chars to get a better hair color that matches..
(but i forgot to add eyebrows on the male default Face_IMGs)
Link to zip File with all used assets, incase they are needed..
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(battler/walk/face sprites ect)
All this is NOT handmade pixel sprite art, only Generator_usage and resizing.. so i guess you can do that for all your chars/npcs if you want..
(in a few cases i edited it a bit, to put a smile on the male battler face, and to change the female battler hair a bit..)
i preffer the Battler faces like @
Dutchmountain mentioned ..