Sergio Barrios is a Mexican actor recognized for his extensive work in dubbing, primarily for Latin American Spanish-language versions of films and television series. His career is marked by a wide range of voice roles in live-action productions, though he is also known for his contributions to anime dubbing. A notable aspect of his career is his work on classic animated series and films during the late 20th century.

In the realm of anime, Barrios is most prominently known for voicing the lead character in the beloved animated series Around the World with Willy Fog. He provided the voice for the adventurous lion Willy Fog in the Latin American Spanish dub of this 1983 Spanish-Japanese production. Another significant anime role for Barrios was Masaru Oshita in the 1993 OVA Suikoden Demon Century. His other credits in anime dubbing include roles in feature films such as Martian Successor Nadesico: The Motion Picture – Prince of Darkness, where he voiced an Earth senator, and in the Studio Ghibli film Stink Bomb, where he was the voice of Nobuo's grandfather.

Beyond his anime work, Barrios' voice acting career is extensive and diverse, encompassing a vast array of characters in live-action films. His filmography includes dubbing roles in major Hollywood productions across several decades. He is known for voicing the character Bryant in the original Mexican dubbing of Blade Runner, Commander Eric Lassard in the Police Academy series, and for lending his voice to actors such as Anthony Hopkins as Richard M. Nixon in Nixon and Sean Connery as Juan Sánchez Villa-Lobos Ramírez in Highlander: The Immortal. This body of work highlights his standing as a versatile and experienced figure in the Mexican dubbing industry.