Professor Stephen Daitch (1 episode, 1994)
Dr. Berg (1 episode, 1996)
Alex Benton (1 episode, 1989)
Al Beatty / ... (2 episodes, 1986-1991)
Dr. DeLeon / ... (2 episodes, 1988-1990)
Randall Sloan (2 episodes, 1984)
Publisher / ... (5 episodes, 1986)
Judge / ... (2 episodes, 1981-1983)
Mr. Farnsworth / ... (5 episodes, 1982-1985)
Peter Treadwell (1 episode, 1988)
Mr. Nobbs (1 episode, 1979)
Con Man (1 episode, 1978)
Captain Waldeck 1 episode, 1976
Harold Pacquin / ... (2 episodes, 1971-1973)
Perkins (1 episode, 1971)
S.A.C. Ed Windsor (2 episodes, 1969-1971)
Dr. Jerry Chandler (unknown episodes, 1963-1964)