Mai is an attractive individual with a slender, well defined body. She has long, black hair, some of which is held in a bunny-shaped barrette.
In her bunny costume, she wears bright black high heels and wraps her long slender legs that in translucent black stockings. Similar to a black leotard, the outfit highlighted the lines of her body, while the chest made a firm, modest valley. White cuffs accented her wrists and her neck was adorned by a black bowtie.
At school, Mai is primarily seen wearing her school uniform. When not in her school uniform, she wears her casual attire.
Mai is a polite but serious individual, especially around Sakuta Azusagawa. She usually responds to Sakuta's openly lewd remarks about her by pinching him or stepping on his foot, but can also be flustered just as easily.
Before her invisibility was subdued by Sakuta, she harbored deep anxiety over the possibility that she could be forgotten entirely. She was also quite sensitive over the topic of her hiatus, as she still harbored bitter feelings over the circumstances which caused them; these feelings have now subsided since she starting acting at another agency.
All in all, although she can be quite sensitive, Mai is a nice and kind individual. Notable examples include when Mai denounced the hospitalization incident as false for Sakuta's sake, and when she gave Kaede a dress both as a gift and to at least spark interest in returning to the outside world.
Mai found early fame as a model for television, magazines, and books, due to the fact that her mother ran a photographing agency. While she did enjoy her job as a model in the show business, after being forced to participate in a swimsuit photo shoot by her mother in her third year of middle school, Mai realized she was simply used as a tool to make her mother easy money and took a hiatus from acting as a way to get back at her. Unbeknownst to Mai, the effects of Adolescence Syndrome caused her existence to become unnoticed by other people, something that she would soon discover.