Karl Diedrich Bader, born on December 24, 1966, has established himself as a versatile and beloved figure in American entertainment, recognized for his sharp comedic timing and a distinctive voice that has brought a wide array of animated characters to life. He is best known to television audiences for his long-running role as the dim-witted but lovable Oswald Lee Harvey on the hit sitcom The Drew Carey Show, a performance that showcased his knack for physical comedy and impeccable delivery. Bader’s career has been marked by a seamless blend of live-action and voice-over work, making him a familiar presence across multiple decades of film and television.

Raised in the Washington, D.C. area, Bader developed an early interest in acting and pursued his passion at the University of North Carolina School of the Arts, where he honed his craft. After moving to Los Angeles, he quickly found work, landing a role in the 1993 film adaptation of The Beverly Hillbillies as Jethro Bodine, a part that introduced him to a national audience. This breakthrough led to a series of guest appearances on popular shows, but it was his casting in The Drew Carey Show in 1995 that cemented his status as a comedic actor. The series, which ran for nine seasons, became a cornerstone of his career and allowed him to work alongside Drew Carey and a talented ensemble cast.

Following the conclusion of The Drew Carey Show, Bader continued to demonstrate his range with roles in both film and television. He appeared in the cult classic workplace comedy Office Space (1999) as the perpetually confused Lawrence, and later delivered a memorable performance as the eccentric Rex in the indie hit Napoleon Dynamite (2004). On the small screen, he took on leading roles in the sitcoms Outsourced and American Housewife, the latter of which saw him play the supportive husband Greg Otto to Katy Mixon’s character. He also earned critical acclaim for recurring roles in the acclaimed series Better Things and Veep, proving his ability to handle both broad comedy and subtle character work.

Bader’s most prolific work, however, has come from behind the microphone. His deep, resonant voice and ability to shift between heroic and humorous tones have made him a sought-after voice actor. He is particularly celebrated for voicing Bruce Wayne and Batman in the animated series Batman: The Brave and the Bold and its subsequent films, a portrayal that captured the character’s bravado and charm. His extensive voice credits also include the supernatural enforcer Hoss Delgado in The Grim Adventures of Billy & Mandy, the android Zeta in The Zeta Project, and the energetic penguin Tank Evans in the Surf's Up franchise. More recently, he has lent his voice to the character Dr. Meridian in Transformers: EarthSpark. Through his diverse body of work, Diedrich Bader has proven to be a durable and talented performer, equally at home making audiences laugh on screen or bringing animated worlds to vivid life.