Mariana Mirabetti was a Brazilian voice actor recognized for her work in anime dubbing, particularly for her role as Entoma Vasilissa Zeta in the anime Overlord. Her passing in 2021 at the age of 39 was widely reported by colleagues and entertainment news outlets in Brazil.

Her most prominently cited role was providing the Brazilian Portuguese voice for the battle maid Entoma Zeta in the popular anime series Overlord. This performance is frequently mentioned in her obituaries and is the role for which she is best known within the anime community. Another notable anime credit includes voicing Atë da Ruína in the trailer for the anime adaptation of Saint Seiya: Saintia Shō. She also contributed to the popular series My Hero Academia, voicing a reporter character for the NHA network.

Beyond anime, Mirabetti's voice acting career encompassed a range of live-action series and films dubbed into Portuguese. She was the voice of Abigail in the television series Zoo and Emori in the series The 100. Her other dubbing projects included work on titles such as Guerra dos Cupcakes, Meu Casamento dos Sonhos, and O Sócio.

In addition to her dubbing work, Mirabetti was known for her collaboration with fellow voice actor Diego Ramon, with whom she co-hosted the radio program Dublatop. She was a part of the dubbing community and worked with studios such as DuBrasil. Her death on June 16, 2021, from complications due to COVID-19, led to an outpouring of tributes from colleagues in the Brazilian entertainment industry, who remembered her talent and friendship.