Fabian Oscar Wien is a German actor and voice artist known for his work in dubbing anime and international films and series for the German market. He was born on May 16, 1983, in Berlin, Germany. Coming from a family of actors, including his mother Madeleine Lierck and father Dieter Wien, he began his performance career as a child actor in film and television during the 1990s.

Wien entered the world of voice acting in his early twenties, with his first role being in the anime series Gunslinger Girl, where he voiced the character Marco Toni. He has since become a prominent voice for numerous anime and live-action characters. He is widely recognized as the German voice of the protagonist Saitama in the popular anime series One Punch Man, a role he has performed since 2015. His other notable anime roles include Laurent Thierry in Great Pretender, Gamma 1 in the film Dragon Ball Super: Super Hero, and Tsukasa Kazuki in Romantic Killer.

Beyond anime, Wien's voice work spans a wide range of genres in both film and television. He has dubbed characters in major film productions, such as Ikaris in Eternals. In television, he provides the German voice for Diego Hargreeves in The Umbrella Academy, Jeff Colby in Denver Clan, and Istredd in The Witcher. He is also active in voicing characters for video games, including Ryan Lucan in Life is Strange: True Colors and the Scarecrow in Suicide Squad: Kill the Justice League, and is the current German voice of the Disney character Goofy.

In addition to his voice work, Wien continues to work as an on-screen actor and has performed in theater. In 2004, he received the Balinger Theaterpreis and the Inthegapreis for his role in the play The Name of the Rose. The available information does not confirm his involvement in the specific roles of Hideo Kosameda in Orient, Nobutaka Osanai in Tokyo Revengers, Joe Lazure in Beyblade Burst GT, Father in Mirai, or Rokurouta Sakuragi in Rainbow - Nisha Rokubō no Shichinin.