Mac is a character in The Jetsons. He was voiced by Don Messick.
He is a robot built by Henry Orbit, to assistant him in maintaining Skypad Apartments, although he usually causes more damage. He is also the boyfriend of Rosey, the robot maid of the Jetsons.
The Jetsons episodes:
Mac in "Wedding Bells for Rosey"
Mac in The Jetsons Meet the Flintstones