Walter Busó was a Puerto Rican actor renowned for his extensive work in dubbing and his contributions to the early days of television and theater in Puerto Rico. He was born Walter Busó Dohnert on May 12, 1921, in Naguabo, Puerto Rico, and is sometimes credited as Walter Buxó.

Before embarking on his acting career, Busó served in the United States Army, achieving the rank of First Lieutenant and completing his military service in 1945. He then pursued acting training, taking classes at the University of Puerto Rico with Dr. Ludwig Schajowics and later studying at the Ben Bard Drama school in Hollywood, California.

Busó's career was multifaceted, spanning radio, theater, television, and voice acting. In radio during the 1950s and 1960s, he was a popular figure in programs such as "Los tres Villalobos". He was a key figure in the transition to television in Puerto Rico, starring in "Ante la ley," the first telenovela produced on the island in 1955. His television work included other prominent Puerto Rican productions like "Un romance cada lunes" and the satirical political program "Se alquilan habitaciones". On stage, he performed in a wide range of theatrical works, including "Las brujas de Salem" and "La pasión y muerte de Nuestro Señor Jesucristo," where he notably played Judas Iscariot. He also appeared in films such as "Lamento borincano" and the Disney television film "Cristobalito: The Calypso Colt" in 1970.

As a voice actor, Walter Busó was active in dubbing foreign productions into Spanish, a field in which he built a significant body of work. One of his most recognized dubbing roles was providing the Spanish voice for actor Frank Sinatra in the film "The Detective". He also lent his voice to various characters in American television series that were dubbed for Spanish-speaking audiences, such as "Bonanza" and "Perry Mason". In the realm of animation, Busó contributed his voice to several series, including roles in "Kimba, the White Lion" and "Marine Boy". This includes the role of Samba in the series "New Jungle Emperor, Go Ahead Leo!," a continuation of the Kimba franchise.

Walter Busó passed away on December 1, 1995, in San Juan, Puerto Rico, and is interred at the Puerto Rico National Cemetery. His legacy is that of a pioneer in Puerto Rican entertainment and a prolific voice actor whose work spanned multiple media and generations.