Dário de Castro is a Brazilian voice actor recognized for his extensive contributions to the dubbing of anime and animated series into Portuguese. He began his career in the 1980s and has since become a notable figure in the Brazilian dubbing industry, known for his versatile vocal range that suits both heroic protagonists and authoritative characters. De Castro has voiced numerous roles across various anime series and films, often working with major dubbing studios such as Herbert Richers, Álamo, and Delart.

Among his prominent anime voice roles, de Castro is widely known for portraying Hikaru Ichijyo in the Brazilian Portuguese dub of The Super Dimension Fortress Macross, a character that has garnered recognition among anime fans. He also voiced Yamazaki in Babel II, Espectro in Cyborg 009 The Cyborg Soldier, and Mark Venture in Star Blazers: The Bolar Wars. In the anime film Magnetic Rose, part of the Memories anthology, he provided the voice for Heinz. His work extends to more recent productions, including the series So I'm a Spider, So What?, where he voiced Agner Ricep, and the film Appleseed: Ex Machina, in which he played Dr. Kestner. Additionally, he voiced Faraó in the series In The Beginning - The Bible Stories.

Throughout his career, de Castro has frequently collaborated with other members of his family, including his brother Mário Jorge de Andrade, who is also a well-established voice actor in Brazil. His sustained involvement in dubbing has made him a respected figure in the industry, and he remains active in providing voices for new projects and characters.