Horace Walsh, known as the Pacifist, is the DJ of the K-JAH radio station in Grand Theft Auto III. Walsh took over as host of K-JAH sometime between 1998 and 2001, replacing his cousin Natalie Walsh Davis. Walsh attempts to pacify the residents of Liberty City; encouraging them to not/stop take/taking SPANK, put down their weapons and that 'knowledge is king'. Walsh also dislikes Donald Love and his media company Love Media.
Walsh was voiced by Herman Stephens.
The musician he refers to in Grand Theft Auto III is "Mr. Scientist" and explains that everyone needs a "Mr. Scientist".