Alfonso Ramírez was a Mexican voice actor with a prolific career in Latin American dubbing, recognized for his deep and versatile voice in numerous anime series, films, and video games. Born on October 31, 1946, he studied dramatic arts under the instruction of Miguel Córcega and began his dubbing career in the late 1980s. He passed away on April 18, 2019, at the age of 72.

Ramírez is perhaps best known for his dual role in the iconic anime Saint Seiya, also known as Los Caballeros del Zodiaco. He provided the voice for two Gold Saints: the powerful Aldebarán de Tauro and the contrasting, effeminate Afrodita de Piscis. He reprised these roles in various subsequent productions, including the series Saint Seiya: Soul of Gold and the film Saint Seiya: Legend of Sanctuary. Another landmark role was that of the stoic bounty hunter Jet Black in the acclaimed series Cowboy Bebop and its feature film.

His extensive anime filmography includes a wide array of characters. Among these are the roles cited as examples: Jean Claude in the Latin American dub of the Lupin III special Voyage to Danger, the titular character Tondekeman in the series Time Quest!, and Duo in the OAV Program. Other notable anime credits include Tazuna in Naruto, Professor Spencer Hale and the voice of Entei in Pokémon 3: The Movie, various roles in the Saint Seiya franchise, and appearances in series such as Ranma ½, Zatch Bell, and Mob Psycho 100.

Beyond anime, Ramírez's voice was highly sought after for animated series and live-action dubbing. He voiced characters like Shredder in Teenage Mutant Ninja Turtles, The Thing in Fantastic Four, and Sylvester the Cat in later Looney Tunes productions. He also frequently dubbed live-action actors, lending his voice to David Carradine, Harvey Keitel, Christopher Walken, and Ron Perlman in various films. His work extended to major Hollywood blockbusters, where he voiced Optimus Prime in the Transformers live-action films. In the realm of video games, he was the voice of characters in the Warcraft franchise, such as Malfurion Stormrage and Prophet Velen.

A recurring theme in his career was his ability to portray both authoritative, powerful figures and more nuanced characters, demonstrating a wide vocal range. He also contributed as a dubbing director for the series Corrector Yui. His legacy is marked by a long and respected career that left a significant impact on Latin American audiences who grew up hearing his voice in beloved animated series and films.