Michael Ernst is a German voice actor and musical performer born in Bremen in 1984. He trained in acting, dance, and singing at the Joop van den Ende Academy in Hamburg from 2004 to 2007. Following his formal education, Ernst performed in numerous stage musicals across Germany, with credits including productions of West Side Story, Hairspray, Dirty Dancing, Sweeney Todd, and Titanic - Das Musical. His theatrical work also led him to venues such as the Theater Magdeburg and the Landestheater Salzburg.

In addition to his stage career, Ernst established himself as a prolific voice actor in the German dubbing industry. His voice work spans animation and live-action productions. He provides the German voice for Nick Birch in the animated series Big Mouth, a role he has held since 2017. Other notable voice roles include Ben Wheeler in the series Baby Daddy and Arthur Everest in The Tick. In the realm of animation, he voiced Gabo in the 2023 Disney film Wish and Veneer in Trolls Band Together. For fans of anime, Ernst is known for his portrayal of Yamato Sarukui in the German dub of the Haikyu!! franchise, including the Land VS. Air arc. He has also voiced Shishiba in Sakamoto Days and Kai Hirohara in Junji Ito Maniac: Japanese Tales of the Macabre.

Beyond performing, Ernst works extensively behind the scenes in dubbing. He is active as a dialogue director and musical director for German adaptations of films and series. His musical direction credits include major productions such as Guillermo del Toro's Pinocchio, The Marvels, Cruella, and the German versions of series like DuckTales and Willkommen in Gravity Falls.