Stephan Schleberger is a German actor and voice artist with an extensive career in theatre, film, and television, who is also widely recognized for his contributions to the German dubbing of anime and international films. He trained at a drama school in Cologne and received vocal training in Wuppertal, going on to perform at numerous private theatres across Germany, including the Ernst-Deutsch-Theater in Hamburg and the Komödie im Bayrischen Hof in Munich. His stage work has encompassed a wide range of productions, and he has also appeared in German television series and films.

In the realm of voice acting, Schleberger has lent his voice to many prominent anime characters. He is known for voicing the muscular villain Muscular in the German version of the popular series My Hero Academia. He also took on the iconic role of the gunman Vash the Stampede, providing the German voice for the character in both the original Trigun series from 1998 and its subsequent film, Trigun: Badlands Rumble. Another notable role is Rei from Fist of the North Star, for which he voiced the character in the 1996 German synchronization of the 1986 film. His work also includes voicing the character Ken Masters in the German dub of Street Fighter II: The Animated Movie.

Beyond these roles, Schleberger's voice acting career includes a wide variety of other projects, demonstrating his versatility. He voiced Ludger Schulze in the audio drama Azuro Startet Durch and provided the German voice for the character Scar in the anime series Namikoi. His work spans different eras and genres of anime, from classics like Doomed Megalopolis to more contemporary series. In addition to his anime work, he is frequently heard in commercials and has dubbed the voices of international actors such as Gerard Butler and Oscar-winner Jean Dujardin for the German market.