Jeff DeBenning

 played Councilman Green in the third season episode, Twitch or Treat (1966). He was credited as Jeff De Benning.

Biography
Jeff DeBenning was born on December 30, 1918 in Wilson, Oklahoma as Thomas Jefferson DeBenning. He was an actor, known for How to Succeed in Business Without Really Trying (1967), 77 Sunset Strip (1958) and Highway Patrol (1955). He died on June 23, 2012 in California. He was 93.

Source
Jeff DeBenning on the Internet Movie Database. Retrieved on April 1, 2020.