These images were preserved from Phantasy Star III's lead character designer Toyonaka Ozaki's personal website, as well as in their independently published character book. Since they were not included in any official publication, these could be considered creator inspired fan art of the game that was officially worked on.
Mieu's unofficial character profile
Wren relaxing next to Mieu
Sketch depicting Mieu in formal wear
After
Miun is put to rest, Mieu becomes the new owner of the Miun Claw
Mieu dressed in ceremonial Chinese clothing
Mieu dressed as a bride celebrating Phantasy Star III's 10th anniversary
Dressed as Santa Claus for the holidays
Mieu with her bag of treats
Wearing a Chinese dress. The website address used to be Ozaki's before it was closed.
Diet profile featuring chibi artwork of the cyborg
Colored version of the previous image posted on Ozaki's website