Operetta debuted in the cartoon series in the Volume 2 webisode "Hiss-teria", which premiered on September 29, 2011. She is voiced by Gigi Sarroino and Cindy Robinson in the English version of the cartoon.
In the Volume 5 webisodes, Operetta starts having hair more accurate to the 'Campus Stroll' look of 'Signature' dolls, with the Victory Rolls, having her Signature bracelet on her right wrist instead of her left wrist, and generally looking more accurate, such the hairstyle not having the white streaks or "shiny looking details", and not being a difficult-to-describe shape.
In the 'Boo York, Boo York' movie, in her 'Boo York, Boo York - Frightseers' look, she is shown without some sort of masking covering her face for the very first time, much to the delight of fans. This means her musical-shaped "Phantom of the Opera" scarring-looking phantom-birthmark is shown fully for the very first time ever.
Also in the movie or TV special, Operetta's sunglasses that she wore with that doll assortment on the doll do not make an appearance at all.