 Nathaniel Marston stepped in on February 16, 2004, and ultimately left on November 29, 2007.On January 9 and 10, 2007, Robert Harte temporarily filled in for Marston as Michael.Chris Stack took over the role from December 3, 2007, to June 17, 2009, later making a guest appearance from July 14 through July 16, 2009, and on November 12 and 13, 2009.