Marc Suesterhenn is a German actor and voice artist known for his work in dubbing for anime and other animated productions. His career encompasses stage, television, and film, with a significant body of work in voice acting for German-language versions of popular Japanese anime series.

Suesterhenn has been active as a stage actor for many years, performing with the Schloss-Festspiele Neersen ensemble for a decade as of 2009. His theater work has included a variety of roles, such as Seppel in The Robber Hotzenplotz and Lieutenant Rooney in Arsenic and Old Lace. He has also toured extensively with the children's theater production Ritter Rost, playing the title role. Alongside his stage career, he has consistently worked as a voice actor.

His most prominent roles are in the German dubs of major anime franchises. He is widely recognized for voicing the pro-hero Fat Gum in the long-running series My Hero Academia, a role he has reprised for its fourth and sixth seasons as well as the feature film My Hero Academia THE MOVIE: World Heroes' Mission. In the same series, he has also provided the voice for the villain Moonfish and a Giant Villain in the first episode. Another notable role is Yoshikazu Aihara in the series Uchū Senkan Yamato 2199 (known as Star Blazers 2199) and its film Uchū Senkan Yamato 2199: Hoshi-Meguru Hakobune.

Beyond these prominent examples, Suesterhenn's voice work is extensive. His credits include the role of Skytiger in the Chinese-German animated film The Legend of Hei, Garfunkel in the Layton Mystery Tanteisha series, and Souichi Aida in Bakuman.. He has also contributed to the German dubs of many other series, including Attack on Titan (as Keiji), Haikyu!! The Dumpster Battle (as Masaki Gora), and Kuroko's Basketball The Movie: Last Game (as Zack). His filmography demonstrates a recurring collaboration with the My Hero Academia franchise and work with dubbing studios such as G&G Studios.