Formerly a supermodel named Page Munroe, the character developed severe self-esteem issues and body dysmorphic disorder after being fired by her agent when she turned 30 years old.

Calendar Girl is portrayed as a physically-attractive woman with long black hair and a mask on her face; her motif is based in various annual holidays and combating ageism.

Calendar Girl is stopped by Batman and Batgirl as she dresses up like the Grim Reaper for the Day of the Dead, attacking her hostages with a scythe.

[2][3] Kyle Anderson of Nerdist noted during a review of "Mean Seasons" that the Calendar Girl character serves as an example of age discrimination and agism in fiction.

And this was very deliberate; actress Sela Ward voiced Calendar Girl and, at the time, she was conducting a protest campaign against Hollywood’s ageism and its harmful effects on public perception.