Simone Leonardi is an Italian actor, theatre director, and voice dubber born in Rome. While he has a broad career spanning live-action theatre, television, and film, his voice acting work for anime and animated series is one facet of his professional portfolio. One of his confirmed major roles in animation is providing the Italian voice for the character Jon Ace, also known as John Ace, in the anime series Monsuno. Beyond this notable performance, his dubbing career is extensive but primarily focused on live-action cinema and television productions. For instance, he has provided Italian voices for characters in the Marvel Cinematic Universe, such as Phastos in Eternals and Curt Connors / The Lizard in Spider-Man: No Way Home. Despite this prolific activity, a search for the specific role of Mama from the series City Hunter does not yield any verifiable results within the available information concerning Simone Leonardi's dubbing credits. His career, which began in the early 2000s, has been marked by significant achievements in musical theatre before expanding into a substantial body of work as a voice actor for international films and series.