Johnson is probably best known as the "voice behind the scenes," who gave Special Agents Dan Briggs and Jim Phelps their recorded mission briefings on both incarnations of the Mission: Impossible television series.
[1] The "Voice" was never identified by name, title, or position and was only heard in recordings, but nevertheless became one of the most iconic features of the show.
Prior to his work on Mission: Impossible, Johnson frequently provided the voices of numerous alien creatures on The Outer Limits.
He was uncredited for all, except for his work as the alien "Senator" in the episode "Fun And Games".
[2] Bob Johnson was born in Portland, Oregon, and he died at the age of 73 in Molokai, Hawaii on December 31, 1993.