I remember that.
Definitely the HIGHWAYMAN.
Sam J. Jones from the 80s FLASH GORDON film and they tried to liven the show up with a new character, an "actor" that was popular at the time in Energizer battery commercials - Jacko. His character's name was Jetto.
[Voice of William Conrad] "There is a world just beyond now, where reality rides a razor-thin seam between fact and possibility. Where the laws of the present collide with the crimes of tomorrow. Patrolling these vast outlands is a new breed of lawman, guarding the fringes of society's frontier. They are known simply as Highwaymen...and this is their story."
[Alternate narration] "Most crimes in our society begin and end on some stretch of road where laws often terminate at county lines. Combating these legal blackouts is a new breed of lawman working in secret and alone and known simply as Highwaymen....They say (of the agent called "Highway") his mother was born of fire and his father was born of wind...some who say the man is good and some say he is bad; but all agree who try to play a cheatin' hand, you only get one chance to draw against...the HIGHWAYMAN."