Mai Ebihara possesses long blue hair, typically braided—often as twin braids—and blunt bangs. Her pale skin complements distinctive pink, "tareme"-shaped eyes. She stands 175 cm tall with a slim physique, measurements of 123 cm (Q cup) bust, 57 cm waist, and 96 cm hips; visible nipples are noted.

Her attire includes a standard school uniform and sports gear for volleyball. Additional clothing and accessories encompass ankle socks, thigh-high stockings, detached sleeves, elbow pads, knee pads, a bell accessory, a ribbon tie, hair ties, a kemonomimi headband, micro bikinis, miniskirts, tank tops, nipple covers, and a naked apron.

Personality blends bluntness, strictness, ignorance, and underlying kindness. She frequently adopts the "tsukkomi" role, reacting sharply to others' antics with her signature "Chop" technique and the phrase "Tsukkomi Chop!".

A high school student, she serves as dormitory manager, belongs to Akane's friend group, and plays volleyball. Hobbies include reading, information gathering, drinking, and cow cosplay.