Diego Martín was a Spanish voice actor known for his contributions to anime dubbing for the Spanish market. He is most recognized for providing the Spanish voice of the title character in the anime series Sherlock Hound, where he voiced the role of the famous detective Sherlock Holmes. Beyond this signature role, his anime dubbing work included the character Sr. Seseman in Heidi - A Girl of the Alps, along with additional voices for that series such as a male villager and a postman. He also voiced Conde Gerald in the series Lady Georgie. Professionally, he worked as a dubbing actor, regularly providing the Spanish voice for English-language actors including Martin Sheen, Dirk Benedict (notably as Templeton Peck "Fénix" in The A-Team), Mark Harmon, and Cliff De Young. He was based in Spain, and his professional status is recorded as being deceased as of April 2018.