Miriam Ficher is a renowned Brazilian voice actress with a career spanning over four decades, beginning in the mid-1970s. She started her artistic journey as an on-screen actress, appearing in television novels such as Locomotivas and Vejo a Lua no Céu at the age of thirteen. Her transition to voice acting occurred when she was invited to dub a character her own age for the series Família, making her one of the first children in Brazil to work regularly in the field. She eventually chose to focus exclusively on her dubbing career.

Ficher has become a prominent and highly respected figure in the Brazilian dubbing industry, providing the Portuguese voices for numerous A-list Hollywood actresses. Her regular dubbing subjects include Angelina Jolie, Drew Barrymore, Nicole Kidman, Jodie Foster, and Uma Thurman, among many others. Her work also extends to live-action television series, where she is known as the voice of characters like Amelia Shepherd in Grey's Anatomy and Joyce Byers in Stranger Things.

In the realm of animation and anime, Ficher has an extensive and diverse portfolio. She has lent her voice to a wide array of iconic characters across different genres and generations. Some of her notable roles include Vicky in The Fairly OddParents, the Cow in Cow and Chicken, Botan in Yu Yu Hakusho, and Pandora in Knights of the Zodiac. She has also been the voice of Velma in Scooby-Doo, Charlene in Dinosaurs, and Lilica in Tiny Toon Adventures.

In recent years, Ficher has been particularly active in dubbing popular anime for streaming platforms. She is widely recognized for voicing the powerful magician Merlin in the latter parts of The Seven Deadly Sins franchise, including the series Dragon's Judgement and the film Cursed by Light. She also voiced the fairy queen Titania in The Ancient Magus' Bride. In the drama anime Blue Period, she portrayed the art teacher Masako Saeki. Her film work also includes the role of Mari's mother in Love Live! Sunshine!! The School Idol Movie Over the Rainbow.

Ficher is known for her dedication to her craft, often approaching dubbing for live-action films by studying and following the original actress's performance to capture the nuances of the character. She continues to be an active and sought-after talent, working out of major studios in Rio de Janeiro and São Paulo.