Brittany Anne Murphy-Monjack (November 10, 1977 – December 20, 2009) was a voice actress on King of the Hill. She provided the voices of Luanne Platter and, prior to "I Don't Want to Wait," Joseph Gribble. The show was cancelled after her passing.
On December 20, 2009, Murphy died of pneumonia and anaemia. She was 32.