Shallana Costa is a Brazilian voice actor known for her extensive work in anime dubbing, as well as live-action series and films. She began her career as an actor in 1998 and has been active in voice acting since 2005. Her body of work encompasses a wide range of characters, from protagonists to supporting roles, across various genres of animation and live-action content.

Costa has built a substantial portfolio in anime, providing the Portuguese voice for numerous characters. Some of her most recognized roles include Washimi in the Netflix series Aggretsuko and its holiday special, a role she has voiced across multiple seasons. She also voices Yelena in Attack on Titan The Final Season and its second part. In the My Hero Academia franchise, she is the voice of the pro-hero Ryukyu, appearing in both the television series and the film My Hero Academia THE MOVIE: World Heroes' Mission. Her other notable anime credits include Amagi in Azur Lane, Nana in Plunderer, Belza in The Dungeon of Black Company, Phyllo Quinonne in Suppose a Kid From the Last Dungeon Boonies Moved to a Starter Town, and Michelle in the OBSOLETE ONA series.

Beyond the roles listed, Costa's career features a wide variety of characters across different media. Her work includes roles in long-running series such as Naruto Shippūden (as Ayame) and Boruto: Naruto Next Generations. She has also contributed to major film dubs, such as voicing Tamaki Iwato in the critically acclaimed movie Suzume. Her range extends to live-action dubbing as well; she is known for being the Portuguese voice of Robin Scherbatsky (Cobie Smulders) in the popular series How I Met Your Mother and has worked on shows like Black Mirror, Doctor Who, and The Walking Dead.

Costa has also made significant contributions to the world of video game dubbing. She is the voice of the protagonist Eivor in the Portuguese version of Assassin's Creed Valhalla and voices Irelia in League of Legends. Her work in games demonstrates her ability to bring strong, leading characters to life, a theme also reflected in her anime roles. Throughout her career, which includes work on films like Dumbo and series such as Puffin Rock, Costa has established herself as a versatile and prominent figure in Brazilian dubbing.