Karl Diedrich Bader (born December 24, 1966) is an American actor who is best known for his comedy-centered and voice acting-related roles. He has appeared as a series regular in television sitcoms The Drew Carey Show, American Housewife, and Outsourced, along with notable recurring roles in Better Things and Veep. His film credits include The Beverly Hillbillies, Office Space, EuroTrip, and Napoleon Dynamite. He has also had a prolific voiceover career, playing characters such as Hoss Delgado in The Grim Adventures of Billy and Mandy, Zeta in The Zeta Project, Tank in the film Surf's Up, and provided the voice of Bruce Wayne / Batman in multiple animated films and television series, beginning in 2008 with Batman: The Brave and the Bold.Karl Diedrich Bader was born in Alexandria, Virginia, on Christmas Eve, 1966, the son of Gretta Bader (née Margaret Marie Lange; 1931–2014), a sculptor, and William B. Bader (1931–2016), a foundation executive and political activist. His patrilineal great-grandfather was Edward L. Bader, who served as the mayor of Atlantic City, New Jersey and is of German and Scottish heritage. When Bader was two years old, his family moved to Paris, but he returned to the U.S. to attend Groveton High School. He graduated from T.C. Williams High School in Alexandria, Virginia, and attended college at the University of North Carolina School of the Arts.