Alfonso Vallés is a prolific Spanish voice actor with a career spanning over three decades, renowned for his deep and versatile voice in dubbing for animation, live-action film, and video games. Born in Barcelona on October 24, 1960, he began his professional career in 1986 after completing a dubbing course with APADECA. He is widely considered one of the best Spanish voice actors of his generation.

While Vallés is celebrated for iconic roles in western media and video games, such as Al Bundy in Married... with Children and Solid Snake in the Metal Gear Solid series, his filmography also includes a substantial body of work in anime dubbing for the Spanish market. He has lent his voice to a wide array of characters in this genre, often bringing depth and authority to supporting and antagonist roles. Notable examples of his anime dubbing work include the imposing Bosse in Ranking of Kings, the shrewd Erhardt in The Rising of the Shield Hero, and the fierce Chimera in My Hero Academia: Heroes Rising. He also voiced the character Hannes in Attack on Titan: Junior High and the powerful Beerus in the film Dragon Ball Super: Super Hero.

His extensive portfolio spans numerous other animated features and series. Vallés provided the Spanish voice for Detective Toshimi Konakawa in the acclaimed film Paprika, Mephisto in Demon City Shinjuku, and Wyvern Rhadamanthys in the Saint Seiya: The Hades Chapter OVAs. Other credits include roles in Trigun: Badlands Rumble as Gasback, Dr. Slump & Arale-chan: Hoyoyo! The Secret of Nanaba Castle as Sembei Norimaki, and the character Kiichi Goto in Mini Pato.

Beyond his specific anime roles, Vallés's career is marked by his status as the habitual Spanish dubbing voice for a host of prominent international actors, including Ed O'Neill, Djimon Hounsou, Vinnie Jones, and Mickey Rourke. With a career that encompasses thousands of dubbing projects, Alfonso Vallés has established himself as a foundational and highly respected figure in the Spanish entertainment industry.