Leo Valeriano is an Italian voice actor known for his work in the Italian-language dubs of numerous anime series from the 1970s through the 1990s. His real name is Leo Di Giannantonio, and he was born in Rome, Lazio, Italy, on January 10, 1938. Beyond voice acting, his career also includes work as an on-screen actor and a singer-songwriter.

Valeriano contributed to the Italian versions of many classic anime. He is credited with several roles in the series The Brave Frog, also known as Kerokko Demetan, where he provided the first voice for the characters Callisto, Inspector, Pesce Gatto, and Professor. In the anime Kashi no Ki Mokku, known in Italy as Pinocchio: The Series, he voiced the character Gatto for episodes 3 through 26.

His work on the series Voltes V was extensive, encompassing multiple characters over the course of the show. He is credited with voicing the characters Michel, the Narrator, and the first voice for both Commander Sirius and an adult Dr. Kentarus. He also provided voices for the roles of Defense Minister and Prince Zahki in the same series.

In addition to the titles mentioned in the query, Valeriano's broader anime filmography includes roles in Adventures of the Little Mermaid, Angie Girl, Attack on Tomorrow, Dino Mech Gaiking, Groizer X, and The Perrine Story, among many others. His work as a voice actor forms a significant part of his professional legacy within the Italian entertainment industry.