Operetta (G1)

Operetta is characterized as tough, determined, and as "a bit of a diva" with a "set of pipes". A rebellious teenager that loathes being told what to do, Operetta is a loner who secludes herself in the catacombs of Monster High to focus on practicing music in a small amphitheater that contains a pipe organ. While Operetta is mostly unfazed by personal comments, she is affected by any judgement of her music, whether it be praise and mockery, with the latter potentially causing Operetta to become vindictive until she is satisfied with her revenge.

During her first months at Monster High, Operetta's distant personality and fierce ego made it difficult for her peers to approach her. However, Operetta began making friends by joining the Skultimate Roller Maze (SKRM) team after seeing the girls being mocked for wanting to compete, even though she initially rejected it for being too "conformist". She eventually stayed on the team as she began to enjoy it.