Caio Santos is the professional name of Caio Freire Santos, a Brazilian actor and voice actor born on February 24 in São Paulo, Brazil. He has built a substantial career providing Portuguese-language dubbing for anime, films, and television series, primarily serving the Brazilian market. His work has made him a recognizable voice in the industry, known for voicing lead and supporting characters across a wide range of anime genres.

One of his most recognized roles is Canute in the historical anime series Vinland Saga. He provides the voice for the character in the Brazilian Portuguese dub produced for the Crunchyroll streaming platform. Additional major anime roles in his filmography include the protagonist Rio, who carries the memories of Haruto Amakawa, in the isekai fantasy series Seirei Gensouki: Spirit Chronicles. He also plays Junpei Murao, a young man rediscovering his passion for ballet, in Dance Dance Danseur. In the Log Horizon franchise, specifically Log Horizon: Destruction of the Round Table, he voices the character Rundelhaus Code. Another notable science fiction role is Shigure Daniel Kai in Deep Insanity: The Lost Child.

Beyond these key roles, Santos has voiced a number of other prominent characters. He is the Brazilian Portuguese voice of the god Yato in Noragami and Kilik Lung in Soul Eater. His extensive work in popular long-running series includes roles such as Hisashi Kinoshita in Haikyū!!, Shinichi Nagata, also known as Recon, in Sword Art Online, and Victor in Shadows House. His work also extends to anime films, including Sword Art Online: Ordinal Scale. His continued involvement in ongoing series, such as returning for the second season of Seirei Gensouki: Spirit Chronicles in 2024, highlights his ongoing contributions to anime dubbing in Brazil.

Regarding recurring collaborations, his consistent work across numerous series dubbed by prominent studios points to his established presence in the Brazilian dubbing industry. His career reflects a steady trajectory of voicing lead and supporting roles, demonstrating considerable range from fantasy and action to drama.