Caio Freire Santos is a Brazilian actor and voice actor born on February 24 in São Paulo. He has built a substantial career dubbing anime, films, and television series for the Brazilian Portuguese market.

Freire has lent his voice to a wide array of characters in anime, demonstrating considerable range. He voices 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 role is Shigure Daniel Kai in the science fiction series Deep Insanity: The Lost Child.

Beyond these key roles, Freire's anime filmography includes several other major characters. He is the Brazilian Portuguese voice of the god Yato in Noragami and Kilik Lung in Soul Eater. He has also voiced characters in popular long-running series such as Hisashi Kinoshita in Haikyū!!, Shinichi Nagata (Recon) in Sword Art Online, and Victor in Shadows House. His work also extends to anime films, including Sword Art Online: Ordinal Scale.

While a comprehensive list of recurring creative partnerships is not detailed in the available information, his consistent work across numerous series dubbed by prominent studios like Dubrasil points to his established presence in the Brazilian dubbing industry. His career reflects a steady trajectory of voicing lead and supporting characters in a diverse range of anime genres, from fantasy and action to drama, solidifying his position as a notable figure in the field. 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.