Berger began his career working on TMNT with the TMNT Adventures series published by Archie Comics and officially began working on TMNT in August of 1989 when he was hired by his friend Ryan Brown. He is currently Managing Editor of Mirage Publishing and maintains The Mirage Group Website. Berger also created the comic book series, Gutwallow and the TMNT character Merdude. He is a graduate of the Cleveland Institute of Art. He currently draws short comics for NaturalNews, a political conspiracy theorist site.