Over on The Fugitive, Richard Kimble's brother in law was played by (at least) 4 actors. Lt. Gerard's family changed each time we saw them.
That's the opposite thing: same character, different actors. On Bewitched, Darrin, Darrin's father, and Gladys Kravitz were played by two actors each.
But at the same time, Paul Lynde played a driving instructor before Uncle Arthur, and Bernard Fox played an anthropologist before Dr. Bombay.