James Joseph Mallon (born March 19, 1956) is an American television and film producer and writer, most notable for being executive producer of the Peabody Award-winning series Mystery Science Theater 3000 (MST3K). He is also president of the series' original production company, Best Brains, Inc., directed more than 75 episodes of MST3K, and played the role of Gypsy from the first season until Jack Frost in the middle of the eighth season.