Ken Mayer was a big screen film actor known for powerful performances. Mayer marked his early career with roles in "Space Patrol" (1949-1955), the western "Ambush at Cimarron Pass" (1958) with Scott Brady and "Gun Fight" (1961). He went on to act in the Kerwin Mathews fantasy "Jack the Giant Killer" (1962), "My Favorite Martian" (CBS, 1963-66) and the dramatic adaptation "Spencer's Mountain" (1963) with Henry Fonda. He also appeared in the drama sequel "The New Interns" (1964) with Michael Callan and "Lost in Space" (CBS, 1965-68). More recently, Mayer appeared on the Manny Pacquiao documentary "Manny" (2015).