Dennis Henry Burkley (September 10, 1945 – July 14, 2013) was an American actor. He voiced both Carl Moss, the principal of Tom Landry Middle School in several episodes, and Karl, owner of the Show Biz Deli in the episode, "Love Hurts and So Does Art", and later returned to voice Karl the owner of revamped Show Biz Sushi in the episode, "Bad Girls, Bad Girls, Whatcha Gonna Do".