Meganee Akai works as a staff member and manager at Prism Stone in Kirajuku, guiding new idols and assisting customers. She has brown eyes, long brown hair reaching her shoulders with short-cut bangs, and wears distinctive red-framed glasses. Typically cheerful, friendly, and helpful toward newcomers, she occasionally overreacts when excited or annoyed, displaying a more easily provoked, hot-blooded temperament than earlier franchise versions.

She frequently chastises scatterbrained colleague Yuzuru Aoba, Prism Stone assistant and later Dear Crown manager, positioning her as a beleaguered authority figure. A significant rivalry exists with Naru Shiawase, manager of competing store Dear Crown. Meganee initially views Naru as a competitive threat, reacting with annoyance or hostility during Dear Crown's rise. This dynamic softens after Meganee learns Naru entered management out of admiration for her, evolving into mutual respect and friendship by episode 75.

Etymologically, her surname "Akai" translates to "red," while "Meganee" combines "glasses" and "older sister," forming "Red Glasses"—a direct nod to her eyewear. The "Nee" suffix also reflects her narrative role as an older-sister figure.

Within the Pretty Series franchise, she remains the only character appearing as a mainstay throughout Pretty Rhythm, PriPara, and Kiratto Pri☆Chan. This marks her third appearance outside the Prism World setting. Her Kiratto Pri☆Chan design closely resembles her Pripara counterpart over earlier Pretty Rhythm iterations.